Modelling Web Performance Optimization - FFSUx

These are the slides from my talk "Your WebPerf Sucks" at HK CodeConf 2015 (http://hongkong.codeconf.io) at Science Park in Hong Kong, October 24th. Web Performance is an important aspect of building for the web and this talk highlights different aspects of what is important and what can be done to improve web performance and build faster sites. While mentioning different aspects of possible improvements, the main focus lies on optimising the critical rendering path to get pages on the screen faster and what tools can help to do so.

The document is about a project for the National Transport Company. It includes a certificate signed by the director, head of center, and GL tech of NIIT Jodhpur certifying the project work. It also includes an acknowledgement, system requirements, contents, and the beginning of the home and network sections which provide an overview of the company's network capabilities and allows the user to view network details by state.

The document provides guidelines for website and CMS development with a focus on SEO best practices. It includes sections on page titles, navigation, accessibility, code structure, front-end coding standards, back-end coding standards, CMS features that help with SEO like modifying metadata and sitemaps, and techniques for improving page speed. The guidelines were created by Amit Kute and cover a wide range of topics to help make websites more usable, accessible, and optimized for search engines.

Applications must implement responsive web design strategies today. However most developers are not experienced in responsive techniques. More over images have provided a difficult hurdle for developers and business stakeholders to make responsive. A proper responsive web design strategy increases return on investment, reduces long term maintenance requirements and improves application performance. Images create many challenges in implementing responsive design. This session will explain what responsive images are. How new web standards have enabled manageable responsive image practices. We will go over tooling and techniques to enable responsive images in your developer and line of business workflows. When you leave this session you will have actionable knowledge of responsive images, techniques, tooling and workflow options you can apply to your projects now.

The document provides an overview of developing high performance web applications, focusing on optimizing front-end performance. It discusses why front-end performance matters, and provides best practices for optimizing page load time, developing responsive interfaces, and efficiently loading and executing JavaScript. The document also covers DOM scripting techniques, tools for profiling and analyzing performance, and how the performance monitoring service Gomez can be extended to better measure client-side metrics.

The document discusses optimizing web performance for mobile devices. It covers mobile web platforms and browsers, the importance of performance on mobile, tools for measuring performance, optimizing initial loading and above-the-fold content within 1 second, and maintaining responsiveness. The key recommendations are to measure on real devices, avoid redirects, reduce requests, load above-the-fold content quickly and defer the rest, and prioritize simplicity over complex designs and frameworks.

Ari Nahmani covers the latest in advanced technical SEO at SMX Munich (Muenchen) 2016. Discussions of the deprecated HTML snapshot, Javascript crawlability and indexing, new frameworks, prerendering, server side rendering, prerender.io, isomorphic javascript, and other technical issues related to the future of protecting your index health.

This document discusses client-side libraries in AEM and best practices for their use. It explains that clientlibs allow logical organization of JavaScript and CSS files and avoid duplicate includes. Key points covered include using cq:ClientLibraryFolders to define libraries, including them via cq:includeClientLib, dependencies vs embedding, debugging tools, themes, and minification. Best practices include placing component code in clientlibs, embedding to reduce requests, requesting from /etc, defining dependencies, and minification on publish.

This document summarizes a presentation on developing dynamic components in AEM using single-page application concepts. It discusses how traditional approaches to dynamic components can be tricky when components need to communicate and update frequently. An SPA approach treats each component as a module that handles its own data fetching and updating independently via AJAX calls. On page load, the server returns only static markup and components get dynamic data by making POST requests to a controller returning JSON. This allows for perceived faster interactions and easier front-end/back-end separation compared to full page reloads. Examples demonstrate rendering templates, initialization scripts, and a sample controller class to retrieve and return dynamic component data.

This is the basic Web design and development slide. From here you can practice HTML, CSS, PHP, MySql, and JavaScript. I do believe that this is a very effective slide for the beginner who wants to learn Basic Web design and development.

Presented at Velocity conference, Santa Clara, 2013. Understand web performance from the user journey perspective. Case studies explore performance issues unique to multi-step or multi-page web transactions, and measurement approaches for identifying issues and monitoring ongoing performance. Synthetic and RUM discussed.

This document discusses using invisible iframes to conduct multi-step cross-site request forgery (CSRF) attacks in a deterministic manner. It demonstrates how an iframe can be used to conduct a GET CSRF attack by dynamically creating an image tag with the vulnerable URL as the source. It also shows how a hidden form can be submitted from an iframe to conduct a POST CSRF attack. JavaScript code examples are provided for the GET and POST attacks to ensure the iframes communicate with the main page between steps.

The document discusses responsive web design techniques for building responsive applications in APEX, including: - Using CSS media queries like @media to adapt layouts based on screen size and orientation. - Implementing grid systems with CSS frameworks like Theme 25 to create responsive page templates. - Leveraging APEX features like region attributes and client-side detection to conditionally render content. - Additional techniques like responsive tabs, conditional hiding of content, and reflowing data tables.

This document discusses optimizing jQuery and front-end performance. It covers minimizing HTTP requests, file size, and blocking behavior to improve dependency loading. It discusses optimizing initial page rendering through asset ordering, lazy loading, and avoiding reflows and repaints. The document also covers post-load responsiveness techniques like JavaScript optimizations. It provides an overview of jQuery internals and optimizations like chaining selections and avoiding empty sets. Tools mentioned include Google Closure Compiler, dynaTrace AJAX Edition, and Cuzillion.

Web Performance is a serious issues these days. 80% of web performance issues are in the client. Many developers either do not realize what they are leaving on the table and how that affects the success of their application. These are 10 things any web developer can do in about 30-60 minutes to drastically increase page load times and thus increase the application's profitability.

This document provides an overview and agenda for a beginner web technologies workshop covering topics like HTML, CSS, JavaScript and more. The first day will introduce why the workshop is useful and provide basic terminology. It will cover HTML versions 4 and 5, CSS versions 2 and 3, and provide live examples. Key topics are why web technology is growing, how websites are used today and potential future capabilities. The document outlines terminology, explains client-server architecture and static vs dynamic pages, and provides examples to demonstrate various HTML elements, tags and attributes.

PrettyFaces: SEO, Dynamic Parameters, Bookmarks, and Navigation for JSF / JSF2 - As presented at JSFSummit2009 in Orlando Florida. Why should we use PrettyFaces?

The document discusses how web browsers render web pages in 5 stages: 1) Constructing the object model from HTML tags and content 2) Creating the render tree by omitting non-visible nodes 3) Calculating layout and positioning during the layout stage 4) Painting pixels on the screen during the paint stage 5) Composite layers are ordered and combined during the composite stage It provides tips for optimizing performance such as minimizing critical resources, leveraging caching, prioritizing content, and reducing reflows and repaints.

We all know that site speed matters not only for users but also for search rankings. As marketers, how can we measure and improve the impact of site speed? Mat will cover a range of topics and tools, from the basic quick wins to some of the more surprising and cutting-edge techniques used by the largest websites in the world.

The document provides best practices for optimizing frontend performance by reducing page load time. It discusses ways to reduce the number of HTTP requests, DNS lookups, redirects and duplicate scripts. It also recommends techniques like minifying assets, leveraging caching, prioritizing critical components, optimizing images and using content delivery networks.

Overview on why web performance matters, how to measure it and some discussion on 3rd-party content. Presented t the DC area Web Manager's Roundtable group on 12/7/2011.

The document discusses performance anti-patterns in Ajax applications. It covers the anatomy of web 2.0 applications, the impact of slow performance on users, common performance anti-patterns like too many network requests and mistakes with JavaScript frameworks, and how to analyze slow pages in 5 minutes using free tools. The presentation aims to help attendees avoid common mistakes that can slow down Ajax apps and analyze where pages are slow.

The document discusses performance anti-patterns in Ajax applications. It covers the anatomy of web 2.0 applications, the impact of slow performance on users, common mistakes that degrade performance such as too many network requests and latency issues, and how to analyze page speed using free tools. The presentation aims to teach attendees how to avoid common framework pitfalls and optimize Ajax application performance.

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.

This document discusses various techniques for improving front-end web performance. It states that 80% of end-user response time is spent downloading page components like images, CSS, JavaScript, and that speed is important for user experience and functionality. Various methods are presented for minimizing file sizes like JavaScript minification and combining files. It also recommends techniques like using CSS sprites and lazy loading images. Browser tools for analyzing performance are listed, and references for further information are provided.

The document discusses optimization of the presentation tier of web applications. It notes that the presentation tier is often overlooked despite being responsible for over 30% of client/server performance. Some key optimizations discussed include reducing HTTP requests, optimizing response objects by reducing size and load pattern, JavaScript minification and placement, image sprites, caching, and ensuring valid HTML markup.

Technical SEO involves optimizing a website to improve search engine rankings through both on-page and off-page factors. It focuses on improving the technical aspects of a website like XML sitemaps, robots.txt files, page speed, and structured data to help search engines better index and understand the site. Regular audits and optimization of these technical elements can positively impact how search engines view and rank a website.

The document discusses various techniques for optimizing web performance, including: - Minifying assets like CSS, JavaScript, and images to reduce file sizes - Leveraging caching, compression, and browser parallelization to speed up page loads - Implementing responsive design patterns and techniques like image sprites and media queries - Optimizing assets further with techniques like image optimization, lazy loading, and prefetching

Вы уже слышали о JAMstack, который пришел на смену SSR и SPA? Подход, который оптимизирует веб приложения так, что они ограничены только скоростью вашего интернет соединения. Никаких просадок при рендере на клиенте, никаких падений серверов от нагрузки, только SEO-friendly приложения без проблем с масштабируемостью.

Frederick Townes presented on optimizing websites for performance. He discussed working backwards from user experience, prioritizing the largest issues. Factors that can improve performance include front-end and back-end optimization, reducing payload size, caching, optimizing databases and runtime, reducing workload, and using content delivery networks. Key metrics to measure include page load time, time to first byte, and time on site. Common cases like JavaScript optimization and recommended plugins were also covered.

Front end optimization is important because 80% of end-user response time is spent on the front-end and front-end optimization can cut page load times by 25-50%. Page load times significantly impact user experience and business metrics. Tools like Yslow and Google PageSpeed can help identify optimization opportunities. Image optimization, minimizing HTTP requests by combining files, and reducing payload sizes are some techniques that should be applied from the start of a project. Progressive page loading, splitting components across domains, browser caching, and preloading components can further improve performance.

The document discusses website performance and optimization. It notes that nearly half of users expect a site to load within 2 seconds and will abandon a site taking longer than 3 seconds. Common issues causing poor performance are bloated templates, unnecessary code, and too many HTTP requests. Suggested optimizations include minimizing assets, prioritizing visible content, image optimization, caching, compression, and lazy loading. Case studies show significant speed improvements after implementing optimizations. Metrics like Speed Index measure how quickly visible content displays to influence perceived performance.

Performance is important but often overlooked when it comes to building responsive sites. We often spend time discussing layouts, breakpoints, and designs that fits well for both desktops and mobile but we do not invest more time in thinking about performance. We learned this the hard way when we revamped Viki's main web page to a responsive site a few months ago. In the process of improving Viki's performance, we discovered practical techniques and useful tools in helping us enhance our user experience and monitor our performance. In this talk, we are going to share the present and the future of performance optimizations for responsive sites. https://tech.rakuten.co.jp/

During our second SEO webinar lesson, we spoke about the importance of site speed. We ran through an explanation of the Google Page Speed insights tool and how to take care of the most common optimizations the tool sugests to site oweners.

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.

This document discusses optimizing the client-side performance of websites. It describes how reducing HTTP requests through techniques like image maps, CSS sprites, and combining scripts and stylesheets can improve response times. It also recommends strategies like using a content delivery network, adding expiration headers, compressing components, correctly structuring CSS and scripts, and optimizing JavaScript code and Ajax implementations. The benefits of a performant front-end are emphasized, as client-side optimizations often require less time and resources than back-end changes.

Web performance optimization can be done at three levels - general, server-side, and technology. At the general level, techniques include minimizing HTTP requests, optimizing images, minifying files, avoiding redirects and empty sources. Server-side optimizations involve techniques like content delivery networks, cookie-free domains, caching, and gzip compression. At the technology level for dynamic sites like Joomla, optimizations include flushing buffers early and optimizing database queries. Performance can be measured using various online tools.

Stream processing is a crucial component of modern data infrastructure, but constructing an efficient and scalable stream processing system can be challenging. Decoupling compute and storage architecture has emerged as an effective solution to these challenges, but it can introduce high latency issues, especially when dealing with complex continuous queries that necessitate managing extra-large internal states. In this talk, we focus on addressing the high latency issues associated with S3 storage in stream processing systems that employ a decoupled compute and storage architecture. We delve into the root causes of latency in this context and explore various techniques to minimize the impact of S3 latency on stream processing performance. Our proposed approach is to implement a tiered storage mechanism that leverages a blend of high-performance and low-cost storage tiers to reduce data movement between the compute and storage layers while maintaining efficient processing. Throughout the talk, we will present experimental results that demonstrate the effectiveness of our approach in mitigating the impact of S3 latency on stream processing. By the end of the talk, attendees will have gained insights into how to optimize their stream processing systems for reduced latency and improved cost-efficiency.

Are you interested in dipping your toes in the cloud native observability waters, but as an engineer you are not sure where to get started with tracing problems through your microservices and application landscapes on Kubernetes? Then this is the session for you, where we take you on your first steps in an active open-source project that offers a buffet of languages, challenges, and opportunities for getting started with telemetry data. The project is called openTelemetry, but before diving into the specifics, we’ll start with de-mystifying key concepts and terms such as observability, telemetry, instrumentation, cardinality, percentile to lay a foundation. After understanding the nuts and bolts of observability and distributed traces, we’ll explore the openTelemetry community; its Special Interest Groups (SIGs), repositories, and how to become not only an end-user, but possibly a contributor.We will wrap up with an overview of the components in this project, such as the Collector, the OpenTelemetry protocol (OTLP), its APIs, and its SDKs. Attendees will leave with an understanding of key observability concepts, become grounded in distributed tracing terminology, be aware of the components of openTelemetry, and know how to take their first steps to an open-source contribution! Key Takeaways: Open source, vendor neutral instrumentation is an exciting new reality as the industry standardizes on openTelemetry for observability. OpenTelemetry is on a mission to enable effective observability by making high-quality, portable telemetry ubiquitous. The world of observability and monitoring today has a steep learning curve and in order to achieve ubiquity, the project would benefit from growing our contributor community.

CIO Council Cal Poly Humboldt September 22, 2023

MuleSoft Meetup on APM and IDP

How do we build an IoT product, and make it profitable? Talk from the IoT meetup in March 2024. https://www.meetup.com/iot-sweden/events/299487375/