AJAX for Scalability

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1) Tuenti uses several techniques to scale their systems to handle high traffic loads, including partitioning their database and content delivery across multiple servers. 2) They employ client-side routing and AJAX to improve scalability by reducing full page loads and distributing traffic across server farms. 3) Tuenti leverages multiple content delivery networks and pre-fetching of content to optimize image loading times and increase cache hit rates.

Covers some of the important things to consider, such as hosting options, caching, content delivery networks, and speed testing for optimizing the performance of your WordPress website.

Gowebbaby is a global web design company that has designed over 500 custom WordPress websites and 1000 blogs. There are several major issues that can cause a WordPress website to run slowly, including unwanted plugins, lack of caching, poor hosting, database optimization issues, and using an outdated version of WordPress. The document provides tips in each area to improve website speed, such as disabling unused plugins, installing a caching plugin, choosing a fast hosting provider, optimizing the database, and upgrading to the latest version.

Did you know that 80% to 90% of the user's page-load time comes from components outside the firewall? Optimizing performance on the front end (e.g. from the client side) can enhance the user experience by reducing the response times of your web pages and making them load and render much faster.

RackSpace vs Amazon EC2 stress evaluation of responding to user registration on a Drupal 6 ubercart ecommerce site test using LoadStorm. We have stood up an eCommerce site built with Drupal6 and ubercart and stood it up on two most popular cloud providers. We then built a stress test using LoadStorm and tried to push the sites and servers to the limit. Here are the results of our experiment.

Periodic refresh and multi-stage download are design patterns for updating content. Periodic refresh checks the server at regular intervals for new information and notifies users. Multi-stage download loads basic functionality initially and additional components in the background over time to improve the user experience for both fast and slow connections. Examples include ESPN scoreboards, Gmail notifications, and Microsoft Start.com.

Caching ensures faster load times by providing quick access to files. In it, copies of files are stored in a cache. Caching can be of several types.

1. Definition of Web performance. 2. Why Important. 3. Webpage Rendering. 4. Browsers render. 5. Web Performance Rules. 6. Web Performance Tools. 7. Research

Speeding up a WordPress site involves optimizing images, using a content delivery network (CDN) to improve load times, selecting fast hosting, and implementing caching. Page speed is important for user experience and retention - users leave sites that take over 4 seconds to load. Optimizing images reduces file sizes while maintaining quality. A CDN stores content on globally distributed servers to deliver pages faster. Caching saves page content for quick retrieval to improve load times.

This slide is about the basics of web performance gives the insite of all the things we can do to achieve high performing web apps

This document discusses HTTP/2 prioritization and how resources are prioritized during loading. It begins by explaining how browsers prioritize different resource types during parsing and rendering. It then covers how HTTP/2 allows all requests to be sent immediately to the server with priority specifications, as opposed to HTTP/1.x which limits connections. The document concludes by discussing challenges with prioritization across connections and various tools for testing prioritization.

An overview of caching, optimization, and performance measurement tips. Presented to the Detroit WordPress Meetup on April 10, 2017.

The document discusses key aspects of resource loading and prioritization on the web, including: 1. The HTML parser stops for non-async scripts until previous CSS is downloaded and the script is parsed and executed, but does not pause for CSS or image loading. 2. Resources can only be loaded once discovered by the parser or layout; optimal ordering prioritizes render-blocking and parser-blocking resources first using full bandwidth. 3. HTTP/2 allows for prioritization of resources from a single domain, while priority hints and preloading help prioritize cross-domain assets.

Blake Crosby Julian Dunn Media Operations and Technology CBC/Radio-Canada Cache Optimization & Origin Infrastructure Reduction Using Akamai Site Delivery The document discusses how CBC/Radio-Canada optimized caching and reduced origin infrastructure using Akamai site delivery. Some of the key strategies used were setting default blanket caching rules, heavy leveraging of conditional GET requests, categorizing content into different TTL buckets, and enabling last mile acceleration. These techniques helped reduce origin costs and footprint while still maintaining a high level of content freshness and performance.

This document discusses optimizing PHP and web server performance. It covers using opcode caches like APC to improve PHP performance. It also discusses web performance best practices recommended by Google and Yahoo, including using CDNs, browser caching, minimizing assets, and profiling tools. The document is presented by the CTO of a mobile ad network company that sees high traffic volumes on only two servers.

BeautyBarometer, blog de beauty

Réalisation dune plaquette de présentation pour une enseigne de mode.

4-H offers several robotics programs to encourage youth to pursue STEM careers. The Junk Drawer Robotics curriculum uses household materials for basic robotics lessons. FIRST Lego League (FLL) introduces robot design and programming through competition. Higher levels like FIRST Tech Challenge (FTC) and FIRST Robotics Competition (FRC) involve building competitive robots and promoting STEM in the community. These programs aim to equip youth with skills needed for future STEM careers as only 18% of students are proficient in science currently.

This document discusses international SEO and content silos. It begins by introducing the speaker and their background in search engine optimization. It then covers key topics like the international search landscape, how search engines work, content silos, duplicate content issues across languages, and tips for international SEO. The document emphasizes doing market research, optimizing for local audiences through localized content, keywords, designs and addressing duplicate content issues. It stresses the importance of unique and relevant content organized into content silos to help search engines understand the site structure and content.

Maxima Experiential Marketing India Pvt Ltd is a leading experiential marketing agency in Central India. They create engaging brand activations and experiences for clients across various industries. Their services include in-shop branding, rural outdoor promotions, product demonstrations, exhibitions and more. They have worked with major brands like JK Seeds, HP, Asian Paints, Hero Motocorp, Acer, and others on campaigns across India. Their integrated approach focuses on strategic and tactical aspects to build meaningful engagement between brands and customers.

The document discusses early organizational development theories proposed by Kurt Lewin and how they impact organizations today. [1] Lewin proposed a three stage model of change - unfreezing, moving, and refreezing - but this model assumes organizations can stabilize, ignoring that they must continuously change and adapt. [2] Organizational development focuses on behavioral interventions but has limitations for strategic planning and systems-level change. [3] Contemporary views integrate behavioral and systemic elements, proposing organizations continuously learn and develop like "learning organizations".

Présentation dans le cadre de la soirée Versio "Référencement et réseaux sociaux, Imposez votre présence digitale" - Jeudi 27 février 2014 au 18 Quai - Digital Store - BNP Paribas - Rennes - Bretagne - France.

Come si costruiscono brand di successo attraverso collaborazione, innovazione lean, dinamiche del social business

The document proposes a visual overhaul of Mule Studio to improve the user interface. It identifies issues with the existing design such as outdated visual styling and inconsistencies. The proposed redesign aims to streamline the workflow with a cleaner interface, clearer hierarchy, updated icons, and improved usability of features like the palette, properties view and XML editing. The redesign will be implemented in phases over several release cycles through 2022. Risks include resource allocation and compatibility with the Eclipse platform.

Une petite présentation faite au groupe d'intérêt Marketing de l'association québécoise des technologies - AQT.

Scaling your application as you grow should not mean slow to load and expensive to run. Learn how you can use different AWS building blocks such as Amazon ElastiCache and Amazon CloudFront to “cache everything possible” and increase the performance of your application by caching your frequently-accessed content. This means caching at different layers of the stack: from HTML pages to long-running database queries and search results, from static media content to application objects. And how can caching more actually cost less? Attend this session to find out!

The document provides tips for optimizing various aspects of a website including the front end, application and database, web server, and miscellaneous topics. It recommends techniques such as minimizing HTTP requests, leveraging caching, optimizing databases and queries, offloading processing, and load balancing between web servers to improve page loading speeds and site performance. The overall goal is to analyze bottlenecks and apply solutions such as file compression, caching, and leveraging CDNs or reverse proxies to make websites faster and more scalable.

This document summarizes Andy Melichar's presentation at WordCamp Omaha about optimizing WordPress performance. He began with introductions and explained his background in web development. He then discussed common performance issues hosting companies see and why performance matters for user experience and revenue. Andy outlined key areas to optimize like WordPress plugins/themes, web server configuration, and using content delivery networks. He demonstrated the significant impact of enabling caching, compression, browser caching and switching to Nginx on a test site's performance. In the end, Andy emphasized there are many options to try and the WordPress community can help with configurations.

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 discusses architectural considerations for AJAX applications. It covers key topics like browser anatomy, HTTP protocols, caching, state handling, and rendering. Browsers limit connections to 4 per domain by default, so domain sharding can help utilize more connections. Caching is important on both the client and server sides. State can be stored in HTTP sessions on the server, cookies on the client, or by keeping state on the rich client with AJAX. Rendering impacts performance, so minimizing reflows during asynchronous rendering is important.

This document provides instructions on how to build a content delivery network (CDN) to improve website performance. It discusses how page sizes and mobile traffic are increasing, causing slower load times. A typical website loads resources from a single web server, taking 10 seconds. Using a CDN can get content closer to users, load resources in parallel, and improve speeds. The document reviews existing CDNs and how to set up an on-premise or cloud CDN using technologies like Azure CDN, which can deliver content to users worldwide from multiple edge servers for faster load times.

This document discusses optimizing Joomla templates for high performance. It recommends tools like Firebug and YSlow to measure performance, and optimizing assets like JavaScript, CSS, and images. JavaScript should be moved to the end of the page, unused code removed, and files minified and compressed. CSS should be moved to the head and stripped of unused rules. Images can be optimized by using sprites, compression, and delivery via a CDN. The optimization process involves these techniques applied at each stage of development.

The document discusses various techniques for optimizing UI performance, including optimizing caching, minimizing round-trip times, minimizing request size, minimizing payload size, and optimizing browser rendering. Specific techniques mentioned include leveraging browser and proxy caching, minimizing DNS lookups and redirects, combining external JavaScript, minimizing cookie and request size, enabling gzip compression, and optimizing images. Profiling and heap analysis tools are also discussed for diagnosing backend performance issues.

Slides used in workshop session C7 on "Bandwidth Management Techniques: Technical And Policy Issues" at the IWMW 2003 event held at the University of Kent on 11-13 June 2003. See http://www.ukoln.ac.uk/web-focus/events/workshops/webmaster-2003/sessions/#workshops-c

There are many ways to optimize your website, and it’s hard to know where to start. In this webinar we’ll show you five top performance optimizations and explain how each will impact your load time and order. We’ll also share tips and tricks on how to apply each, since the devil’s in the details. We’ll focus on the following five optimizations: * Domain Sharding * Consolidation * Inlining * Predict Head * Asynchronous Javascript Loading

Traditionally, content delivery networks (CDNs) were known to accelerate static content. Amazon CloudFront has come a long way and now supports delivery of entire websites that include dynamic and static content. In this session, we introduce you to CloudFront’s dynamic delivery features that help improve the performance, scalability, and availability of your website while helping you lower your costs. We talk about architectural patterns such as SSL termination, close proximity connection termination, origin offload with keep-alive connections, and last-mile latency improvement. Also learn how to take advantage of Amazon Route 53's health check, automatic failover, and latency-based routing to build highly available web apps on AWS.

Web caching and content distribution networks aim to improve performance and reduce bandwidth usage. Caching stores previously requested content for future use. Proxies and CDNs place cached content on edge servers near users. When a request is made, the user is redirected to the closest cached copy to minimize latency. CDNs use DNS to map requests to nearby surrogate servers that hold replicated content. This allows the content to be served locally instead of traveling over long distances to the origin server.

Discussion of various optimizations that can be applied to Magento community and enterprise installations for speed improvements. Techniques include common WPO techniques such as gzip, cache control, CSS spriting, domain sharding, byte code caches, reverse proxies and more. Various steps are applied to an Amazon AWS instance with the results from Webpagetest.org shown afterwards.

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.

A talk on how to optimize the Oracle Content Management System, and Site Studio in particular, for faster pages.

Whether you’re a cash-strapped startup or an enterprise optimizing spend, it pays to run cost-efficient architectures on AWS. This session reviews a wide range of cost planning, monitoring, and optimization strategies, featuring real-world experience from AWS customers. We’ll cover how you can effectively combine EC2 On-Demand, Reserved, and Spot instances to handle different use cases, leveraging auto scaling to match capacity to workload, choosing the most optimal instance type through load testing, taking advantage of multi-AZ support, and using CloudWatch to monitor usage and automatically shut off resources when not in use. We'll discuss taking advantage of tiered storage and caching, offloading content to Amazon CloudFront to reduce back-end load, and getting rid of your back end entirely, by leveraging AWS high-level services. We will also showcase simple tools to help track and manage costs, including the AWS Cost Explorer, Billing Alerts, and Trusted Advisor. This session will be your pocket guide for running cost effectively in the Amazon cloud. Watch the re:Invent recording here: https://www.youtube.com/watch?v=SG1DsYgeGEk

This session is recommended for people who are new to content distribution networks (CDNs) and have a need to decrease server load and speed up their website’s load time. In this mid-level technical session you will be able to learn more about improving the performance of web sites and web applications using Amazon CloudFront and Amazon Router 53. Learn how to assess whether your web applications will benefit from caching and how to optimize the delivery of static and dynamic content to boost performance and improve your customers' experience in using your applications.

Amazon CloudFront and Amazon Route 53 can help optimize web application performance and availability. CloudFront improves performance by caching static and reusable content at edge locations and optimizing delivery of dynamic content through features like keep-alive connections and latency-based routing. Route 53 provides fast, reliable DNS services and can health check origins to improve high availability. Together, CloudFront and Route 53 provide a global network that caches content close to users and routes traffic based on network conditions to optimize performance and design for failure.

AJAX allows for developing rich internet applications using a combination of technologies including JavaScript, DOM, XMLHttpRequest and asynchronous HTTP requests. It allows for faster applications with less bandwidth usage through partial page updates. Popular AJAX examples include Google Maps, Gmail and Yahoo Maps. Key benefits are data-driven user interfaces and asynchronous communication between the client and server. Steps in AJAX include a client event triggering an XMLHttpRequest, the request being sent to and processed by the server, and the response updating the HTML DOM. While AJAX provides advantages, it also has limitations such as increased complexity, breaking the back button, and cross-browser issues.

This presentation shares some of the experiences Xero went through to greatly improve our user experience by focusing on front-end performance.

At Tuenti, we do 3 code pushes per week, sometimes modifying thousands of files and running thousands of automated tests and build operations before, to ensure not only that the code works but also that proper localization is applied, bundles are generated and files get deployed to hundreds of servers as fast and reliable as possible. We use opensource tools like Mercurial, MySQL, Jenkins, Selenium, PHPUnit and Rsync among our own in-house ones, and have different development, testing, staging and production environments. We had to fight with problems like statics bundling and versioning, syntax errors and of course the fact that we have +100 engineers working on the codebase, merging and releasing more than a 15 branches the same day. We also switched from Subversion to Mercurial to obtain more flexibility and faster branching operations. With this talk we will explain the process of how code changes in ourcode repository end up in live code, detailing some practices and tips that we apply, problems we had and how we solved them.

Erik Schultink's closing keynote at FICOD 2011. He discusses the history of Tuenti, lessons learned along the way, our view of opportunity in the Mobile Web ecosystem today, and the vision of TU addressing that opportunity.

El documento presenta los conceptos y flujos de trabajo clave para el desarrollo ágil de software, incluyendo la formación de equipos interdisciplinarios, el uso de brainstorming y documentos para definir requisitos, el marco Scrum para gestión de proyectos iterativos, pruebas automatizadas continuas, revisión de código por pares, y lanzamientos semanales para implementar cambios.