(reposting with clearer title)
Performance tuning presentation from WindyCityRails 2010.
Why performance matters
The right way to approach it
Front end testing tools
Automated testing tools
Common problems and the ways to solve them in Rails
Rails specific tools
bullet
slim_scrooge
rack bug
request log analyzer
rails indexes
PDF Generation in Rails with Prawn and Prawn-to: John McCaffreyJohn McCaffrey
breakdown of the most commonly used pdf libraries in rails projects,and an in depth review of prawn
example pdfs and code can be seen at prawn.heroku.com
More info at www.RailsPerformance.com
Web Performance Madness - brightonSEO 2018Bastian Grimm
My talk from brightonSEO 2018 covering various web performance strategies, this time mainly focussing on critical rendering path, various image optimisation strategies as well as how to handle custom web fonts.
Super speed around the globe - SearchLeeds 2018Bastian Grimm
My talk covering some of the very latest in web performance optimisation (paint timings, critical rendering path, custom web fonts, etc.) for technical marketers & SEOs from SearchLeeds 2018.
The need for Speed: Advanced #webperf - SEOday 2018Bastian Grimm
The document discusses optimizing web performance. It begins by defining critical rendering path optimization, which involves identifying the minimum CSS needed to render the initial viewport of a page. This critical CSS can be inlined into the page head to avoid an additional HTTP request. Non-critical CSS is then preloaded asynchronously so it downloads in parallel without blocking page rendering. Tracking paint metrics like first contentful paint and time to interactive is also recommended to measure performance improvements. Overall, the document emphasizes optimizing the critical resources needed for the initial page load.
Migration Best Practices - SEOkomm 2018Bastian Grimm
My talk from SEOkomm 2018 in Salzburg covering best practices on how to successfully naviate through the various types of migrations (protocal migrations, frontend migrations, etc.) from an SEO perspective - mainly focussing on all things tech.
Odoo - Open Source CMS: A performance comparisionOdoo
The document compares the performance of four open source content management systems (CMS): Odoo, Drupal, Magento, and Prestashop. It finds that Odoo consistently outperforms the other CMS across a number of metrics: it is 3 times faster than Drupal and 6 times faster than Magento based on load testing; it can handle more users before timing out; and its codebase is smaller. While the other CMS have improvements to make in terms of HTML validation, Odoo represents the best balance of speed, scalability, and maintainability according to the analysis in the document.
TechSEO Boost 2018: Implementing Hreflang on Legacy Tech Stacks Using Service...Catalyst
One of the challenges faced at enterprise SEO level is often the legacy platforms and tech stacks that you inherit. Finding a cost-effective way of implementing international SEO best practice is often a barrier to internationalisation. Edge technology is creating new opportunities to optimise websites independently of the inherited technological barriers. In this session, SALT.agency’s Dan Taylor will explore their findings from implementing Hreflang using cutting edge technology to remove these barriers.
PDF Generation in Rails with Prawn and Prawn-to: John McCaffreyJohn McCaffrey
breakdown of the most commonly used pdf libraries in rails projects,and an in depth review of prawn
example pdfs and code can be seen at prawn.heroku.com
More info at www.RailsPerformance.com
Web Performance Madness - brightonSEO 2018Bastian Grimm
My talk from brightonSEO 2018 covering various web performance strategies, this time mainly focussing on critical rendering path, various image optimisation strategies as well as how to handle custom web fonts.
Super speed around the globe - SearchLeeds 2018Bastian Grimm
My talk covering some of the very latest in web performance optimisation (paint timings, critical rendering path, custom web fonts, etc.) for technical marketers & SEOs from SearchLeeds 2018.
The need for Speed: Advanced #webperf - SEOday 2018Bastian Grimm
The document discusses optimizing web performance. It begins by defining critical rendering path optimization, which involves identifying the minimum CSS needed to render the initial viewport of a page. This critical CSS can be inlined into the page head to avoid an additional HTTP request. Non-critical CSS is then preloaded asynchronously so it downloads in parallel without blocking page rendering. Tracking paint metrics like first contentful paint and time to interactive is also recommended to measure performance improvements. Overall, the document emphasizes optimizing the critical resources needed for the initial page load.
Migration Best Practices - SEOkomm 2018Bastian Grimm
My talk from SEOkomm 2018 in Salzburg covering best practices on how to successfully naviate through the various types of migrations (protocal migrations, frontend migrations, etc.) from an SEO perspective - mainly focussing on all things tech.
Odoo - Open Source CMS: A performance comparisionOdoo
The document compares the performance of four open source content management systems (CMS): Odoo, Drupal, Magento, and Prestashop. It finds that Odoo consistently outperforms the other CMS across a number of metrics: it is 3 times faster than Drupal and 6 times faster than Magento based on load testing; it can handle more users before timing out; and its codebase is smaller. While the other CMS have improvements to make in terms of HTML validation, Odoo represents the best balance of speed, scalability, and maintainability according to the analysis in the document.
TechSEO Boost 2018: Implementing Hreflang on Legacy Tech Stacks Using Service...Catalyst
One of the challenges faced at enterprise SEO level is often the legacy platforms and tech stacks that you inherit. Finding a cost-effective way of implementing international SEO best practice is often a barrier to internationalisation. Edge technology is creating new opportunities to optimise websites independently of the inherited technological barriers. In this session, SALT.agency’s Dan Taylor will explore their findings from implementing Hreflang using cutting edge technology to remove these barriers.
Optimizing web performance (Fronteers edition)Dave Olsen
Today, a web page can be delivered to desktop computers, televisions, or handheld devices like tablets or phones. While a technique like responsive design helps ensure that our web sites look good across that spectrum of devices we may forget that we need to make sure that our web sites also perform well across that same spectrum. More and more of our users are shifting their Internet usage to these more varied platforms and connection speeds with some moving entirely to mobile Internet.
In this session we’ll look at the tools that can help you understand, measure and improve the web performance of your web sites and applications. The talk will also discuss how new server-side techniques might help us optimize our front-end performance. Finally, since the best way to test is to have devices in your hand, we’ll discuss some tips for getting your hands on them cheaply.
An introduction to Google's PRPL pattern that can be used to implement Progressive Web Applications. Delivered at MWLUG 2017 in Alexandria, VA by Keith Strickland.
On Open Day, we share our activities of the month with each other and the community. It's when we take a step back and see where we stand. Here's our Open Day for September 2018.
You know that performance is crucial to your company's success, but do the people in the corner office know this? You need to get the message across using the language they speak and targeting the goals they care about.
This session -- presented by Strangeloop president Joshua Bixby at the 2011 Web Performance Summit -- summarizes the benefits of a faster website or web app, then delves into a series of how-tos for creating a business case for web performance in your organization.
Web Performance, Scalability, and Testing Techniques - Boston PHP MeetupJonathan Klein
I gave this talk on 4/27/11 at the Boston PHP Meetup Group. It covers both server side and client side optimizations, as well as monitoring tools and techniques.
This document discusses HTML and web programming basics. It introduces HTML, describing it as a standard language used to define the structure and layout of web pages using tags. It explains HTML tags for text formatting, links, lists, and forms. Examples are provided of common tags like <h1>, <p>, <a>, <img>, and <form> along with their uses and attributes. The document also outlines the basic structure of an HTML page using tags like <html>, <head>, <title>, and <body>.
Speed Kills. More accurately the lack of speed kills. It kills your visitors waiting for a page to load. It kills the search engines trying to index your site. It kills your number of page views, your rankings, your conversions, your user experience, your revenue, and the reach of your message.
This presentation is all about tips and tricks for smaller Drupal sites to speed them up like the big boys at low or no cost.
At A Small Orange we have a large number of clients who love Drupal and also love a value. We've learned a few things about site speed hosting Drupal sites on shared hosting over the years and we'd like to share that knowledge. We'll cover things like:
Out of the box cacheing
Other fun Drupal cacheing modules
3rd party services like CloudFlare
Apache stuff like Mod Deflate
On Open Day, we share our activities of the month with each other and the community. It's when we take a step back and see where we stand. Here's our Open Day for November 2018.
Optimus XPages: An Explosion of Techniques and Best PracticesTeamstudio
Are you starting a new XPages project, but not sure it’s going to be done right the first time? Do you have an existing application that doesn’t seem to have that “X” Factor? In this webinar, John Jardin demonstrates how XPages developers can apply proven techniques and best practices to take their applications to a game-changing level.
You'll learn how to:
-Rapidly develop responsive applications,
-Improve user experience and response times with background and multi-threaded operations,
-Keep your XPages lightweight with code injection,
-Create scheduled tasks the XPages way,
-And much more.
This document compares the performance of Apache and Nginx web servers using Apache Benchmark (ab) testing tool. With 100 concurrent requests and 1000 total requests, Nginx achieved a requests per second rate of 5384.25, which is significantly higher than Apache's rate of 217.62 requests per second. The average time per request was also lower for Nginx at 0.186ms compared to 459.514ms for Apache. Overall, the results indicate that Nginx has superior performance and is able to handle more concurrent requests with less latency than Apache based on this benchmark test.
WordPress&映像配信セミナー+さぶみっと!オフ会- 第2回 さぶみっと! WEB制作セミナー Supported by NTTスマートコネクトHiromichi Koga
The document compares the performance of Apache and Nginx web servers using Apache Benchmark (ab) tool. With 100 concurrent requests and 1000 total requests:
- Apache served requests at an average rate of 217.62 requests/second and average response time of 459.514 ms.
- Nginx served requests much faster at an average rate of 5384.25 requests/second and average response time of just 18.573 ms, demonstrating that it can handle significantly more concurrent requests than Apache.
On Open Day, we share our activities of the month with each other and the community. It's when we take a step back and see where we stand. Here's our Open Day for May 2018.
This document provides an introduction to web components and discusses their benefits. It explains that web components bring a native component model to HTML, allowing for reusable UI functionality both within and across applications. The document demonstrates several types of web components, including custom elements, HTML templates, HTML imports, and shadow DOM. It also discusses browser support for web components and strategies for improving support, such as using polyfills.
[@IndeedEng] Redundant Array of Inexpensive Datacentersindeedeng
Video available: http://youtu.be/hOsA5UpPUSU
Learn how Indeed built one of the fastest and most reliable websites in the world. Indeed Operations ensures indeed.com is always available and always fast for the jobseeker. Operations leaders Charles Valentine and Chris Graf will share how we configure and provision multiple datacenters around the world to provide a massively scalable platform for connecting job seekers with jobs. Charles and Chris will detail a simple and inexpensive method to build a platform that provides DNS-based global load balancing and failover, provider portability, and disposable datacenters.
Speakers:
Charles Valentine (VP of Technology Services at Indeed) leads the Operations, IT, and Security teams. Prior to joining Indeed in 2011, Charles served as VP Technology Services at The Knot.
Chris Graf has managed operations at Indeed since 2011. In that time, Indeed's traffic has grown by more than 300%. Prior to Indeed, Chris managed Web operations in the online gaming industry.
In this presentation, I have shown how a webpage is loaded on your viewport after you request for the same. The process is simple. Once you click on the URL, the browser makes a request to the webserver. The request is processed by the webserver.
Web server files the response to the request and sends it to the browser. The requested page is sent to the web browser. The browser then loads and renders the page content. The requested page is then shown on the viewport.
[@IndeedEng] Boxcar: A self-balancing distributed services protocol indeedeng
Video available at: http://www.youtube.com/watch?v=E1ok08TVxDw
Indeed's flagship job search product has evolved over the years to meet new challenges. It began as a single, monolithic web application. This grew larger and increasingly complex as we built new features. To remedy this growing problem, we implemented a service-oriented architecture to improve system availability, scalability, and maintainability. We examined common practices for service-oriented architectures, and we discovered ways to improve on the state of the art. We developed these ideas into a new framework called Boxcar. In this talk, we will discuss the scaling problems we solved, the innovative ideas behind boxcar, and how we built the scalable architecture that we now use throughout our systems.
R.B. Boyer is a Software Engineer who has been with Indeed since late 2007. Over the years he has worked on a variety of projects, including distributed storage, authentication, and service architectures.
Yinius IT Group provides open source software like Rackoon and Cernido for data mining and Odoo. It also develops mobile apps for iOS and Android and works on front-end development for Wordpress, Drupal, and Odoo CMS. Web By Brains offers website design and development for Odoo including designing sites in Photoshop, slicing designs, integrating HTML and CSS, optimizing assets, and using Odoo building blocks. It also provides an hourly developer rental service starting at 30 EUR per hour.
Web Performance tuning presentation given at http://www.chippewavalleycodecamp.com/
Covers basic http flow, measuring performance, common changes to improve performance now, and several tools and techniques you can use now.
This document discusses techniques for improving web performance. It begins with research on how caching and cookies impact performance. It then outlines 14 rules for optimizing performance, such as making fewer HTTP requests, using content delivery networks, gzipping components, placing scripts at the bottom of pages, and avoiding redirects. Case studies demonstrate how following these rules can significantly improve page load times. The document emphasizes starting performance improvements by focusing on front-end optimizations and advocates evangelizing best practices.
Optimizing web performance (Fronteers edition)Dave Olsen
Today, a web page can be delivered to desktop computers, televisions, or handheld devices like tablets or phones. While a technique like responsive design helps ensure that our web sites look good across that spectrum of devices we may forget that we need to make sure that our web sites also perform well across that same spectrum. More and more of our users are shifting their Internet usage to these more varied platforms and connection speeds with some moving entirely to mobile Internet.
In this session we’ll look at the tools that can help you understand, measure and improve the web performance of your web sites and applications. The talk will also discuss how new server-side techniques might help us optimize our front-end performance. Finally, since the best way to test is to have devices in your hand, we’ll discuss some tips for getting your hands on them cheaply.
An introduction to Google's PRPL pattern that can be used to implement Progressive Web Applications. Delivered at MWLUG 2017 in Alexandria, VA by Keith Strickland.
On Open Day, we share our activities of the month with each other and the community. It's when we take a step back and see where we stand. Here's our Open Day for September 2018.
You know that performance is crucial to your company's success, but do the people in the corner office know this? You need to get the message across using the language they speak and targeting the goals they care about.
This session -- presented by Strangeloop president Joshua Bixby at the 2011 Web Performance Summit -- summarizes the benefits of a faster website or web app, then delves into a series of how-tos for creating a business case for web performance in your organization.
Web Performance, Scalability, and Testing Techniques - Boston PHP MeetupJonathan Klein
I gave this talk on 4/27/11 at the Boston PHP Meetup Group. It covers both server side and client side optimizations, as well as monitoring tools and techniques.
This document discusses HTML and web programming basics. It introduces HTML, describing it as a standard language used to define the structure and layout of web pages using tags. It explains HTML tags for text formatting, links, lists, and forms. Examples are provided of common tags like <h1>, <p>, <a>, <img>, and <form> along with their uses and attributes. The document also outlines the basic structure of an HTML page using tags like <html>, <head>, <title>, and <body>.
Speed Kills. More accurately the lack of speed kills. It kills your visitors waiting for a page to load. It kills the search engines trying to index your site. It kills your number of page views, your rankings, your conversions, your user experience, your revenue, and the reach of your message.
This presentation is all about tips and tricks for smaller Drupal sites to speed them up like the big boys at low or no cost.
At A Small Orange we have a large number of clients who love Drupal and also love a value. We've learned a few things about site speed hosting Drupal sites on shared hosting over the years and we'd like to share that knowledge. We'll cover things like:
Out of the box cacheing
Other fun Drupal cacheing modules
3rd party services like CloudFlare
Apache stuff like Mod Deflate
On Open Day, we share our activities of the month with each other and the community. It's when we take a step back and see where we stand. Here's our Open Day for November 2018.
Optimus XPages: An Explosion of Techniques and Best PracticesTeamstudio
Are you starting a new XPages project, but not sure it’s going to be done right the first time? Do you have an existing application that doesn’t seem to have that “X” Factor? In this webinar, John Jardin demonstrates how XPages developers can apply proven techniques and best practices to take their applications to a game-changing level.
You'll learn how to:
-Rapidly develop responsive applications,
-Improve user experience and response times with background and multi-threaded operations,
-Keep your XPages lightweight with code injection,
-Create scheduled tasks the XPages way,
-And much more.
This document compares the performance of Apache and Nginx web servers using Apache Benchmark (ab) testing tool. With 100 concurrent requests and 1000 total requests, Nginx achieved a requests per second rate of 5384.25, which is significantly higher than Apache's rate of 217.62 requests per second. The average time per request was also lower for Nginx at 0.186ms compared to 459.514ms for Apache. Overall, the results indicate that Nginx has superior performance and is able to handle more concurrent requests with less latency than Apache based on this benchmark test.
WordPress&映像配信セミナー+さぶみっと!オフ会- 第2回 さぶみっと! WEB制作セミナー Supported by NTTスマートコネクトHiromichi Koga
The document compares the performance of Apache and Nginx web servers using Apache Benchmark (ab) tool. With 100 concurrent requests and 1000 total requests:
- Apache served requests at an average rate of 217.62 requests/second and average response time of 459.514 ms.
- Nginx served requests much faster at an average rate of 5384.25 requests/second and average response time of just 18.573 ms, demonstrating that it can handle significantly more concurrent requests than Apache.
On Open Day, we share our activities of the month with each other and the community. It's when we take a step back and see where we stand. Here's our Open Day for May 2018.
This document provides an introduction to web components and discusses their benefits. It explains that web components bring a native component model to HTML, allowing for reusable UI functionality both within and across applications. The document demonstrates several types of web components, including custom elements, HTML templates, HTML imports, and shadow DOM. It also discusses browser support for web components and strategies for improving support, such as using polyfills.
[@IndeedEng] Redundant Array of Inexpensive Datacentersindeedeng
Video available: http://youtu.be/hOsA5UpPUSU
Learn how Indeed built one of the fastest and most reliable websites in the world. Indeed Operations ensures indeed.com is always available and always fast for the jobseeker. Operations leaders Charles Valentine and Chris Graf will share how we configure and provision multiple datacenters around the world to provide a massively scalable platform for connecting job seekers with jobs. Charles and Chris will detail a simple and inexpensive method to build a platform that provides DNS-based global load balancing and failover, provider portability, and disposable datacenters.
Speakers:
Charles Valentine (VP of Technology Services at Indeed) leads the Operations, IT, and Security teams. Prior to joining Indeed in 2011, Charles served as VP Technology Services at The Knot.
Chris Graf has managed operations at Indeed since 2011. In that time, Indeed's traffic has grown by more than 300%. Prior to Indeed, Chris managed Web operations in the online gaming industry.
In this presentation, I have shown how a webpage is loaded on your viewport after you request for the same. The process is simple. Once you click on the URL, the browser makes a request to the webserver. The request is processed by the webserver.
Web server files the response to the request and sends it to the browser. The requested page is sent to the web browser. The browser then loads and renders the page content. The requested page is then shown on the viewport.
[@IndeedEng] Boxcar: A self-balancing distributed services protocol indeedeng
Video available at: http://www.youtube.com/watch?v=E1ok08TVxDw
Indeed's flagship job search product has evolved over the years to meet new challenges. It began as a single, monolithic web application. This grew larger and increasingly complex as we built new features. To remedy this growing problem, we implemented a service-oriented architecture to improve system availability, scalability, and maintainability. We examined common practices for service-oriented architectures, and we discovered ways to improve on the state of the art. We developed these ideas into a new framework called Boxcar. In this talk, we will discuss the scaling problems we solved, the innovative ideas behind boxcar, and how we built the scalable architecture that we now use throughout our systems.
R.B. Boyer is a Software Engineer who has been with Indeed since late 2007. Over the years he has worked on a variety of projects, including distributed storage, authentication, and service architectures.
Yinius IT Group provides open source software like Rackoon and Cernido for data mining and Odoo. It also develops mobile apps for iOS and Android and works on front-end development for Wordpress, Drupal, and Odoo CMS. Web By Brains offers website design and development for Odoo including designing sites in Photoshop, slicing designs, integrating HTML and CSS, optimizing assets, and using Odoo building blocks. It also provides an hourly developer rental service starting at 30 EUR per hour.
Web Performance tuning presentation given at http://www.chippewavalleycodecamp.com/
Covers basic http flow, measuring performance, common changes to improve performance now, and several tools and techniques you can use now.
This document discusses techniques for improving web performance. It begins with research on how caching and cookies impact performance. It then outlines 14 rules for optimizing performance, such as making fewer HTTP requests, using content delivery networks, gzipping components, placing scripts at the bottom of pages, and avoiding redirects. Case studies demonstrate how following these rules can significantly improve page load times. The document emphasizes starting performance improvements by focusing on front-end optimizations and advocates evangelizing best practices.
Make Drupal Run Fast - increase page load speedAndy Kucharski
What does it mean when someone says “My Site is slow now”? What is page speed? How do you measure it? How can you make it faster? We’ll try to answer these questions, provide you with a set of tools to use and explain how this relates to your server load.
We will cover:
- What is page load speed? – Tools used to measure performance of your pages and site – Six Key Improvements to make Drupal “run fast”
++ Performance Module settings and how they work
++ Caching – biggest gainer and how to implement Boost
++ Other quick hits: off loading search, tweaking settings & why running crons is important
++ Ask your host about APC and how to make sure its set up correctly
++ Dare we look at the database? Easy changes that will help a lot!
- Monitoring Best practices – what to set up to make sure you know what is going on with your server – What if you get slashdoted? Recommendation on how to quickly take cover from a rhino.
Magento sites need optimization to load fast and provide a good user experience. Speeding up a site increases sales and improves SEO. Factors that impact load time include network transfers and the resource-intensive nature of Magento. Benchmarking tools like APDEX, Funkload, Yslow and Pagespeed help measure performance and set goals, such as loading the homepage in under 1.5 seconds. Architectures must be sized properly and include techniques like splitting front and back ends, enabling caching, and using a CDN. The Nitrogento extension automates optimizations like blocking caching, sprite generation, and asset minification to significantly improve performance.
When addressing website performance issues, developers typically jump to conclusions, focusing on the perceived causes rather than uncovering the real causes through research.
Mitchel Sellers will show you how to approach website performance issues with a level of consistency that ensures they're properly identified and resolved so you'll avoid jumping to conclusions in the future.
You can watch the webinar recording here:
https://www.postsharp.net/documentation/video?id=190066128
2019 StartIT - Boosting your performance with BlackfireMarko Mitranić
A workshop held in StartIT as part of Catena Media learning sessions.
We aim to dispel the notion that large PHP applications tend to be sluggish, resource-intensive and slow compared to what the likes of Python, Erlang or even Node can do. The issue is not with optimising PHP internals - it's the lack of proper introspection tools and getting them into our every day workflow that counts! In this workshop we will talk about our struggles with whipping PHP Applications into shape, as well as work together on some of the more interesting examples of CPU or IO drain.
MeasureWorks - Why people hate to wait for your website to load (and how to f...MeasureWorks
My slides from DrupalJam 2014... About why users abandon your website and best practices to align content and speed to create a fast user experience, and continue to keep it aligned for every release
This document discusses web performance optimization and provides tips to improve performance. It emphasizes that performance is important for user experience, search engine optimization, conversion rates, and costs. It outlines common causes of performance issues like round-trip times, payload sizes, browser rendering delays, and inefficient JavaScript. Specific recommendations are given to optimize images, stylesheets, scripts, and browser rendering through techniques like compression, caching, deferred loading, and efficient coding practices. A variety of tools for measuring and improving performance are also listed.
Shopzilla redesigned their architecture to improve performance and scalability. The new design simplified layers, utilized caching extensively, and applied best practices for front-end performance. This led to significant business benefits including a 7-12% increase in conversion rates, 8-120% increase in search engine sessions, and a 225% increase in development velocity. Performance testing was a key part of the new approach.
This document provides information on improving Drupal performance through various techniques including performance testing, caching, optimizing database and server configurations, using tools like Varnish, load balancers, and CDNs, and addressing inefficient code. It also discusses a case study of using scalable cloud hosting and caching strategies to handle peak traffic for a site during major awards events.
JBUG 11 - Django-The Web Framework For Perfectionists With DeadlinesTikal Knowledge
The document discusses Django, an open-source web framework for Python. It highlights how Django can shorten development time for web applications by automating common tasks. It provides examples of how Django handles data modeling, views, templates, and other features out of the box. The document also lists many successful websites built with Django that demonstrate its performance, scalability, and popularity in the developer community.
Web Performance & You - HighEdWeb Arkansas VersionDave Olsen
Today, a web page can be delivered to a desktop computer, a television, or a handheld device like a tablet or a phone. While a technique like responsive design helps ensure that our web sites look good across that spectrum of screen sizes we may forget our web sites should also be able to perform equally well across that same spectrum. While more and more of our users are shifting their Internet usage to these more varied platforms and connection speeds our development practices might not be keeping up.In this session we’ll review why optimizing web performance should be an important step in the development of responsive websites. We’ll look at the tools that can help you understand and measure the performance of those sites as well as discuss front-end and server-side techniques that can be used to help you improve their performance. Finally, since the best way to test your site is to have real devices in hand, we’ll share “lessons learned” so you can set-up your own device lab similar to what we have at West Virginia University.This presentation builds upon Dave’s “Optimization for Mobile” chapter in Smashing Magazine’s “The Mobile Book.”
This document introduces and summarizes Django, an open-source web framework written in Python. It highlights key features of Django, including its automated administration interface, object-relational mapper (ORM), generic views, forms, URL configuration, templates, internationalization support, and built-in user authentication. The document also discusses how Django aims to minimize the time it takes to develop software through automation, reusable apps, and other features. Examples are provided of large sites built with Django to demonstrate its performance and scalability.
The document discusses techniques for improving web page performance, including making fewer HTTP requests through image maps, CSS sprites, inline images, and combined scripts and stylesheets. It also covers using a content delivery network, adding expiration headers, CSS/JavaScript optimization, parallel downloads, cookies, browser caching, and more. Case studies and experiments demonstrate the impact of these techniques on major websites. The goal is to help web developers optimize front-end performance.
Mobile User Experience:Auto Drive through Performance MetricsAndreas Grabner
Believe it or not - 85% of mobile apps are removed after first usage! In this presentation - given at the APM Meetup in Singapore in April 2015 - I talked about the challenges, best practices and especially metrics to avoid this situation.
Key Points of the Presentation
The two key trends "Internet of Things" and "DevOps" play a big role in our life when we talk about User Experience and especially mobile user experience. In this presentation I tell you what metrics to use to make sure you deliver your ideas faster to your mobile end users but also ensuring the right quality and user experience so that your users stay loyal and dont delete the mobile app after first usage.
The document discusses the importance of front-end performance optimization for web pages. It provides 14 rules for optimizing front-end performance, including minimizing HTTP requests, using a content delivery network, gzipping components, and others. Case studies show front-end optimizations can yield 40-50% performance improvements. Research found the percentage of users with empty caches is higher than expected, so pages should be optimized for both primed and empty caches.
Our application got popular and now breaks under load. The document discusses common issues that cause applications to break as user load increases, such as overuse of shared scopes, inefficient database queries, and slow client-side performance. It provides examples of better approaches and techniques to optimize performance, such as using distributed caching, improving query efficiency through joins, compressing assets, and prioritizing critical CSS and JavaScript.
Similar to Ruby on Rails Performance Tuning. Make it faster, make it better (WindyCityRails) (20)
The document contains data in bar and pie charts, with the bar chart showing orange at 100, blue at 76, and green at 35, and the pie chart showing data points of 30, 70, and 11. It also mentions a nice beach.
A Taste of TDD: The basics of TDD, why it is hard and how to do it betterJohn McCaffrey
A Taste of TDD: Basic overview of Agile Testing, TDD in practice, Pros/Cons of Test Driven Development, Recent TDD Controversey (DHH, Kent Beck, Martin Fowler), and some strategies for doing it well.
This is a lead in to a full Agile Workshop on Scrum/XP, TDD, and Pairing
Becoming a more Productive Rails DeveloperJohn McCaffrey
Tips and tricks for how to accelerate your technical learning, take better notes, search in the right places, get help faster, solidify your understanding and hold on to what you've learned.
LeanStartup:Research is cheaper than developmentJohn McCaffrey
The document discusses the importance of conducting thorough research before beginning development on a new project. It argues that research is cheaper than development and can help define the problem, understand existing terminology and solutions, identify target customers, and find market trends. Both primary and secondary research methods are covered, including interviews, online searches, social bookmarking, and polling forums. The presentation provides tips for creating a project profile and researching problems, customers, influencers, and monitoring competitors. It emphasizes gathering useful data and testing hypotheses before taking action.
Becoming a more productive Rails DeveloperJohn McCaffrey
A presentation by John McCaffrey of RailsPerformance.com on how to manage technical information, ask technical questions, expand Ruby and Rails knowledge, and work on interesting side projects for open source, non-profits or as a freelancer
John McCaffrey gives a presentation on cloud tools for development. He discusses terminology related to hosting and deploying applications. Some hosting options he covers include self-hosting, Amazon Web Services, EngineYard, Heroku, and AppHarbor. John then demonstrates deploying applications to Heroku and monitoring tools. He finishes by discussing collaboration tools like email, chat, screen sharing, and code repositories on services like GitHub.
A walkthrough of various application performance tuning tools and a good workflow for where to start, from a presentation at WindyCityRails 2011 in Chicago, IL.
See the video, and more Web and Ruby/Rails Performance info at www.RailsPerformance.com
-John McCaffrey
improving the performance of Rails web ApplicationsJohn McCaffrey
This presentation is the first in a series on Improving Rails application performance. This session covers the basic motivations and goals for improving performance, the best way to approach a performance assessment, and a review of the tools and techniques that will yield the best results. Tools covered include: Firebug, yslow, page speed, speed tracer, dom monster, request log analyzer, oink, rack bug, new relic rpm, rails metrics, showslow.org, msfast, webpagetest.org and gtmetrix.org.
The upcoming sessions will focus on:
Improving sql queries, and active record use
Improving general rails/ruby code
Improving the front-end
And a final presentation will cover how to be a more efficient and effective developer!
This series will be compressed into a best of session for the 2010 http://windycityRails.org conference
Leveraging AI for Software Developer Productivity.pptxpetabridge
Supercharge your software development productivity with our latest webinar! Discover the powerful capabilities of AI tools like GitHub Copilot and ChatGPT 4.X. We'll show you how these tools can automate tedious tasks, generate complete syntax, and enhance code documentation and debugging.
In this talk, you'll learn how to:
- Efficiently create GitHub Actions scripts
- Convert shell scripts
- Develop Roslyn Analyzers
- Visualize code with Mermaid diagrams
And these are just a few examples from a vast universe of possibilities!
Packed with practical examples and demos, this presentation offers invaluable insights into optimizing your development process. Don't miss the opportunity to improve your coding efficiency and productivity with AI-driven solutions.
What is an RPA CoE? Session 4 – CoE ScalingDianaGray10
How to scale a COE to meet organizational missions.
Topics covered:
• What is the original focal area?
• How to expand the COE globally.
• Is a centralized or decentralized model better for scaling?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
Test Case Design Techniques as chapter 4 of ISTQB Foundation. Topics included are Equivalence Partition, Boundary Value Analysis, State Transition Testing, Decision Table Testing, Use Case Testing, Statement Coverage, Decision Coverage, Error Guessing, Exploratory Testing, Checklist Based Testing
TrustArc Webinar - Your Guide for Smooth Cross-Border Data Transfers and Glob...TrustArc
Global data transfers can be tricky due to different regulations and individual protections in each country. Sharing data with vendors has become such a normal part of business operations that some may not even realize they’re conducting a cross-border data transfer!
The Global CBPR Forum launched the new Global Cross-Border Privacy Rules framework in May 2024 to ensure that privacy compliance and regulatory differences across participating jurisdictions do not block a business's ability to deliver its products and services worldwide.
To benefit consumers and businesses, Global CBPRs promote trust and accountability while moving toward a future where consumer privacy is honored and data can be transferred responsibly across borders.
This webinar will review:
- What is a data transfer and its related risks
- How to manage and mitigate your data transfer risks
- How do different data transfer mechanisms like the EU-US DPF and Global CBPR benefit your business globally
- Globally what are the cross-border data transfer regulations and guidelines
Day 4 - Excel Automation and Data ManipulationUiPathCommunity
👉 Check out our full 'Africa Series - Automation Student Developers (EN)' page to register for the full program: https://bit.ly/Africa_Automation_Student_Developers
In this fourth session, we shall learn how to automate Excel-related tasks and manipulate data using UiPath Studio.
📕 Detailed agenda:
About Excel Automation and Excel Activities
About Data Manipulation and Data Conversion
About Strings and String Manipulation
💻 Extra training through UiPath Academy:
Excel Automation with the Modern Experience in Studio
Data Manipulation with Strings in Studio
👉 Register here for our upcoming Session 5/ June 25: Making Your RPA Journey Continuous and Beneficial: https://community.uipath.com/events/details/uipath-lagos-presents-session-5-making-your-automation-journey-continuous-and-beneficial/
The presentation will delve into the ASIMOV project, a novel initiative that leverages Retrieval-Augmented Generation (RAG) to provide precise, domain-specific assistance to telecommunications engineers and technicians. The session will focus on the unique capabilities of Milvus, the chosen vector database for the project, and its advantages over other vector databases.
Attending this session will give you a deeper understanding of the potential of RAG and Milvus DB in telecommunications engineering. You will learn how to address common challenges in the field and enhance the efficiency of their operations. The session will equip you with the knowledge to make informed decisions about the choice of vector databases, and how best to use them for your use-cases
Guidelines for Effective Data VisualizationUmmeSalmaM1
This PPT discuss about importance and need of data visualization, and its scope. Also sharing strong tips related to data visualization that helps to communicate the visual information effectively.
Cassandra to ScyllaDB: Technical Comparison and the Path to SuccessScyllaDB
What can you expect when migrating from Cassandra to ScyllaDB? This session provides a jumpstart based on what we’ve learned from working with your peers across hundreds of use cases. Discover how ScyllaDB’s architecture, capabilities, and performance compares to Cassandra’s. Then, hear about your Cassandra to ScyllaDB migration options and practical strategies for success, including our top do’s and don’ts.
this resume for sadika shaikh bca studentSadikaShaikh7
I am a dedicated BCA student with a strong foundation in web technologies, including PHP and MySQL. I have hands-on experience in Java and Python, and a solid understanding of data structures. My technical skills are complemented by my ability to learn quickly and adapt to new challenges in the ever-evolving field of computer science.
CNSCon 2024 Lightning Talk: Don’t Make Me Impersonate My IdentityCynthia Thomas
Identities are a crucial part of running workloads on Kubernetes. How do you ensure Pods can securely access Cloud resources? In this lightning talk, you will learn how large Cloud providers work together to share Identity Provider responsibilities in order to federate identities in multi-cloud environments.
How to Optimize Call Monitoring: Automate QA and Elevate Customer ExperienceAggregage
The traditional method of manual call monitoring is no longer cutting it in today's fast-paced call center environment. Join this webinar where industry experts Angie Kronlage and April Wiita from Working Solutions will explore the power of automation to revolutionize outdated call review processes!
Chapter 3 of ISTQB Foundation 2018 syllabus with sample questions. Answers about what is static testing, what is review, types of review, informal review, walkthrough, technical review, inspection.
Metadata Lakes for Next-Gen AI/ML - DatastratoZilliz
As data catalogs evolve to meet the growing and new demands of high-velocity, unstructured data, we see them taking a new shape as an emergent and flexible way to activate metadata for multiple uses. This talk discusses modern uses of metadata at the infrastructure level for AI-enablement in RAG pipelines in response to the new demands of the ecosystem. We will also discuss Apache (incubating) Gravitino and its open source-first approach to data cataloging across multi-cloud and geo-distributed architectures.
Database Management Myths for DevelopersJohn Sterrett
Myths, Mistakes, and Lessons learned about Managing SQL Server databases. We also focus on automating and validating your critical database management tasks.
2. John McCaffrey: Its all about me Doing Rails since 2007 3rd time presenting at WindyCityRails 2008: Advanced Firebug and JS unit testing 2009: PDF Generation in Rails 2010: Rails Performance Tuning Addicted to Performance Tuning railsperformance.blogspot.com Feedback: spkr8.com/t/4413 Or bit.ly/PerfR8 @J_McCaffrey [email_address] (the slides will be available, with tons of extra references)
3. What are we gonna cover? Performance touches a lot of layers We have a very diverse audience
4. Measuring Page Load Fixing page load problems Analyzing Server Performance Database issues Ruby issues Q&A Starting off on the right foot
5. It all started... def organization_branches get_organizations .flatten.uniq.select{|org| org.children.size > 0} end def organization_leaves get_organizations .flatten.uniq.select{|org| org.children.size == 0} end def load_organizations branches = current_user .organization_branches leaves = current_user .organization_leaves @branches = branches.to_json(: only => [:id, :name]) @leaves = leaves.to_json(: only => [:id, :name]) @organizations = @criteria .branch ? leaves.collect {|o| [ o.name.titleize, o.id ] }.sort : branches.collect {|o| [ o.name.titleize, o.id ] }.sort end
6. def organization_branches get_organizations .flatten.uniq.select{|org| org.children.size > 0} end def organization_leaves get_organizations .flatten.uniq.select{|org| org.children.size == 0} end def load_organizations branches = current_user .organization_branches leaves = current_user .organization_leaves @branches = branches.to_json(: only => [:id, :name]) @leaves = leaves.to_json(: only => [:id, :name]) @organizations = @criteria .branch ? leaves.collect {|o| [ o.name.titleize, o.id ] }.sort : branches.collect {|o| [ o.name.titleize, o.id ] }.sort end It all started... 2811 queries! Down to 17!!
7. And then... Invoicing issue: If a customer resubmits an order with 2 years, they should be charged $9 but were only being charged $4.50 Do people ever calculate the ROI on software projects? 53626 * $4.50 = $241,317 (just in the last year)
8. Our theme of the day: Leverage Multiplying the power of your efforts, to achieve the greatest value
10. Performance and Business metrics: Shopzilla.com http://www.phpied.com/the-performance-business-pitch/ Went from 6 sec down to 1.2sec
11. Fred Wilson: Speed is the most important feature 10 Golden Principles of Successful Web Apps Fred Wilson, Venture Capitalist www.avc.com Speed Instant Utility Software is media Less is More Make it programmable Make it personal Make it RESTful Discoverability Clean Playful
13. Give yourself a fighting chance, make a plan Alois Reitbauer, dynatrace Anti-patterns Thinking Scalability something you just sprinkle on later Guessing, not testing Ad-hoc, unstructured Waiting until it hurts, not proactively planning Thinking that any early planning is Premature optimization Video on wiki.parleys.com
14. Premature optimization &quot;Premature optimization is the root of all evil&quot; -Donald Knuth
17. Premature optimization &quot;Premature optimization is the root of all evil' -Donald Knuth &quot;Quoting Knuth, as a way to avoid planning for performance issues, is a cop-out&quot; @J_McCaffrey &quot;Don't waste time on making optimization changes until you KNOW they are necessary&quot;
18. If you can not measure it, you can not improve it. — Lord Kelvin
19. Let's do this the right way Measure: Understand the tools to use, at each layer, to measure and monitor performance Create repeatable tests: Be able to invoke the system and easily test Isolate your changes: One thing at a time That's it: Measure, Test, Isolated changes
20. Terminology Response time (avg) == Latency Requests per second == Throughput Load : How much work is there? Utilization : How much of the resources are in use? Scalability : How well can we handle the load? Throughput : How many tasks can be done per unit of time? Concurrency : How many tasks can we do at once? Capacity : How big can our throughput go before things fall apart?
21. Terminology Performance: The resources and Time for a single request Measured in Response Time Throughput: The number requests that can be handled per/time Measured in Requests per second Scalability: Ability to grow and handle more requests, without significantly degrading the experience Performance != Scalability
22. Terminology Let's say: 1 worker that can compute a job in .5 sec Throughput = 2 jobs per sec Latency = .5 sec per job Performance != Scalability Adding more workers will not improve the latency But not having enough workers can increase the response time, due to Queuing and delay
23. Resources: Things that we want to measure System Business Time Cpu Memory Network Disk Money Development time QA and testing time User time
28. Firebug Netpanel Simple and repeatable way to measure page load Usually, less than 20% of the time is spent in fetching the HTML So how do we optimize the other 80%?
29. YSlow Created by Steve Souders Observes the netpanel data, applies rules and gives you a score. Deep understanding of how the browser works Its the best way to have a repeatable, measurement of your site's load performance http://developer.yahoo.com/yslow/
30. YSlow Minimize HTTP Requests Use a Content Delivery Network Add an Expires or a Cache-Control Header Gzip Components Put StyleSheets at the Top Put Scripts at the Bottom Avoid CSS Expressions Make JavaScript and CSS External Reduce DNS Lookups Minify JavaScript and CSS Avoid Redirects Remove Duplicate Scripts Configure ETags Make AJAX Cacheable Use GET for AJAX Requests Reduce the Number of DOM Elements No 404s Reduce Cookie Size Use Cookie-Free Domains for Components Avoid Filters Do Not Scale Images in HTML Make favicon.ico Small and Cacheable
32. Google Page speed Similar to YSlow includes paint events separates out ads, trackers from your content better recommendations and optimizations 1 click to see optimized version of your files http://code.google.com/speed/page-speed
35. Make it repeatable http://www.showslow.com/ track your site, or your competitors will check every 24hrs for you webpagetest.org gtmetrix.org zoompf.com loadimpact.com gomez.com
36. Summary Page load is the place to start Read everything in the Yslow and PageSpeed rules Encourage other devs to play with YSlow, PageSpeed Show Webpagtest.org, and zoompf.com Now that we have a way to measure page performance, we can think about making changes
37. Measuring Page Load Fixing page load problems Analyzing Server Performance Database issues Ruby issues Q&A Starting off on the right foot
38. Isn't everyone already doing this? Analysis of the Alexa top 1000 sites found: 42% don't gzip 44% have more than 2 css files 56% serve css from a cookied domain 62% don't minify 31% have more than 100k size css
39. Compress with Gzip Can save you 50% to 80% of your bandwidth Simplest performance improvement you can make Beware differences in browsers File types: html, js, css, xml, rss, txt, font, json Probably the simplest and smartest thing you can do for your app!
40. Combine and minify javascript and css Jsmin or YUICompressor, or Sprockets Asset_packager javascript_include_tag :cache => &quot;cache/all&quot; Load common js libraries from google http://github.com/rpheath/google_ajax_libraries_api Sprites and image optimzation spriteme.org JqueryUI already gives you sprited images Image optimization Smush.it
41. Expires and Browser Caching Setting a far future expires tells the browser not to ask for the file Using the query string lets us break the caching by having the browser ask for a new file There is a problem with using a URL query string this way http://blog.eliotsykes.com/2010/05/06/why-rails-asset-caching-is-broken/
42. Rails Caching Take your dynamic content, and make it static Page Action Fragment Full length tutorials http://railslab.newrelic.com/ http://railscasts.com/episodes?search=caching Greg Pollack Aloha on Rails http://vimeo.com/10860860
43. Measuring Page Load Fixing page load problems Analyzing Server Performance Database issues Ruby issues Q&A Starting off on the right foot
48. Commercial tools New Relic Developer plugin is a good start Free version doesn’t get you much Bronze version with heroku Scoutapp.com Similar to new Relic Large selection of community plugins
49. Testing tools Apache bench ab -n 10 -c 2 http://www.somewhere.com/ Httperf httperf --server localhost --port 3000 --uri / --num-conns 10000 Jmeter yes, its ugly, but its powerful
50. Measuring Page Load Fixing page load problems Analyzing Server Performance Database issues Ruby issues Q&A Starting off on the right foot
51. Database issues Common database issues Bad queries Not utilizing explain Inadequate indexes N+1 queries Selecting more data than is needed Inconsistent queries for the same data
52. Query_reviewer Common database issues Bad queries Not utilizing explain http:// github.com/dsboulder/query_reviewer Runs explain on all of your queries, outputs to div in page
53. Rails_indexes http://github.com/eladmeidar/rails_indexes Foreign key indexs • Columns that need to be sorted • Lookup fields • Columns that are used in a GROUP BY • Rake tasks to find missing indexes. New one I haven’t tried yet http:// github.com/samdanavia/ambitious_query_indexer
54. Bullet plugin Bullet plugin • http://github.com/flyerhzm/bullet Help you reduce the number of queries with alerts (and growl).
55. Slim_scrooge Be more specific in your select http://github.com/sdsykes/slim_scrooge Instruments your code Observes the usage pattern Suggests/changes your select statement When invoked within the exact same context
56. Ruby Issues Most are due to memory problems Slow GC Not release references Capturing scope Profiling will reveal what’s going on http:// guides.rubyonrails.org/performance_testing.html If you want to learn everything there is to know about profiling Aman Gupta Joe Damato http:// timetobleed.com / http:// memprof.com / They’ve already identified and fixed several memory leaks
57. Ruby issues: Faster Ruby Libraries C Extension++ • XML parser http://nokogiri.org/ • JSON parser http://github.com/brianmario/yajl-ruby/ • CSV parser http://www.toastyapps.com/excelsior/ • HTTP client http://github.com/pauldix/typhoeus Date http:// github.com/jeremyevans/home_run
58. Take home points Performance Performance affects the bottom line The biggest performance win is usually in improving the load time Continue to monitor and test your apps performance over time Gzip, combine and minify to get a big boost Lack of indexes is likely to be one of your biggest backend issues Try to stay up to date with Gems, Plugins, and latest Rails Upgrading to ruby 1.9 will give you a huge performance boost
59. Links: great info on performance Performance Scaling Rails series http:// railslab.newrelic.com / RailsCasts.com Velocity Conference http://en.oreilly.com/velocity2010 google io conference http://code.google.com/events/io/2010/ dynatrace site http:// ajax.dynatrace.com /pages/ http:// www.igvita.com / http:// www.mysqlperformanceblog.com /
61. Beyond ySlow: improving page performance outside the initial load MySql and Postgres Database tuning Heroku: Building Scalable apps from the start Tuning performance for Mobile devices Performance Improvements coming in Rails 3, and 3.1 Speeding up your tests
62. Wait, I made it through that? Architectural musings Background long running tasks Email, image processing, reports, feeds Leverage Rack, Sinatra or Padrino Parallel processing, Event Machine Learn from heroku, scalable from the start Revaluate your cloudy-ness Great RailsConf presentation by James Golick
63. Wait, I made it through that? Designing for performance Watch how they really use it Multiple tabs? Back and forth between list and detail view Great presentation at WindyCityRails2009 by David Eisinger Optimizing perceived performance Make it feel fast
64. Questions for you Architectural musings Moving to or already on Ruby 1.9? Serving your content from a separate domain? Cookieless?