Tuning Web Performance

The document discusses various standards that are helping to bridge isolated social networks and enable interoperability across platforms, including OpenID, WebFinger, XRD, PubSubHubbub, Salmon, OAuth, XAuth, OEmbed, and OpenSocial. It provides examples of how these standards work to allow users to log in or comment on different sites without separate accounts, share updates across networks, and embed content like videos universally. While progress is being made, challenges remain around user identity, privacy, access control, and full adoption. The overall goal is a more open and interconnected social web.

Presentation by @aaronpeters at Dutch Web Performance Meetup on August 22 2012. The presentation covers new stuff in WPT UI, the WPT API, scripting and hidden gems. Awesome tool, but also room for improvement.

A web performance optimisation case study presented by Seatwave at the London Web Performance Meetup, Jan 2011. The PDF is in Landscape so you might be better to download it and then shift-ctrl-+ to rotate it clockwise in Adobe Acrobat Reader.

20100807 OSC Nagoya での講演資料 # スライドのみで見やすいよう若干整理 P5〜 Agenda P17〜 "HTML5" って何？ P56〜 HTML5 の範囲は？ P67〜 ブラウザのサポートは？ P94〜 IE6 はどうするの？ P118〜 使用上の注意 P147〜 便利なツールは？ P152〜 One Point Q&A P186〜 追加資料

The document discusses JavaScript basics and modular JavaScript design. It provides an agenda that covers JavaScript execution, scopes, types, browser objects, blocks, closures, DOM, event handling, and AJAX. It then discusses object-oriented JavaScript, components, containers, layouts, and client-side MVC patterns for modular JavaScript design. Examples of leveraging standards like HTML, CSS, and JavaScript across devices are also provided.

You're probably familiar with the well-known performance success stories from companies like Amazon, Google, Microsoft and Shopzilla. But how relevant are these megasites to "mortal companies" that don't make billions of dollars per year or have teams of in-house performance engineers to do their bidding? Strangeloop president Joshua Bixby walks through case studies of Strangeloop customers like AutoAnything.com and Artbeads.com to show how mortal companies have improved performance and achieved measurable success, including: · Increased revenue by 13% · Increased cart size by 6% · Increased conversions by 9% Joshua offers practical tips for successfully evangelizing performance within your organization. He also gives a snapshot of the current performance landscape in North America, as well as a sense of where the industry is headed.

The document discusses Asynchronous JavaScript and XML (Ajax) and how it can be used to retrieve data from a server without reloading the entire web page. It provides an overview of Ajax fundamentals including the XMLHttpRequest object, DOM manipulation, and different data transport options. It also recommends using a JavaScript library to simplify making Ajax requests instead of writing raw XMLHttpRequest code.

This document summarizes upcoming improvements and new features in web browsers, including Firefox 3.1, Safari 4, Internet Explorer 8, Opera 10, and Google Chrome. Many of the browsers are focusing on better JavaScript performance through new engines like TraceMonkey and V8. New features include process per tab, postMessage for cross-domain communication, HTML5 drag and drop, and the Canvas element for offloading rendering to the client. Overall the browsers are aiming to improve speed, compatibility, and the user experience through these new features and technologies.

WebPageTest is a great tool for testing and analysing how quickly web pages load. Many people just use it as a simple testing tool, but it has advanced scripting capabilities for multi-page testing, completing forms etc. It also has an API so performance testing can be integrated into Continuous Integration processes, used for monitoring and analysing how the web is built. These slides explore some of these capabilities in more detail. There are bonus slides after the "Thank You" slide

Sascha Corti With Internet Explorer 9, Microsoft has entered the league of HTML 5 browsers and with its active participation in the W3C working groups, the company proves its engagements towards the new and emerging standards. Developers however are often left wondering where the boundaries are drawn between HTML5 web site, plug-in based rich internet application and smart client or “app”. This session intends to answer this question and uses many examples to show you some of the most important enhancements introduced by HTML5, CSS3, SVG, DOM, WOFF and ECMA script. You will learn now the standards are still evolving and how Microsoft is contributing. http://soft-shake.ch/2011/conference/sessions/microsoft/2011/09/06/introduction-to-html5.html

Slides I co-presented with John Dyer at the 2010 Echo Conference in Dallas, TX. http://johndyer.name/ http://echoconference.com/

This document summarizes a presentation about Service Oriented Integration with Apache ServiceMix. The presentation introduces Enterprise Service Buses and their purpose in facilitating integration. It then discusses key aspects of Apache ServiceMix, an open source ESB, including its support for various protocols and engines. The presentation provides examples of how ServiceMix can be used to configure routing and mediation using tools like Apache Camel and content-based routing. It concludes by discussing newer developments in ServiceMix 4 that utilize OSGi and build upon integration patterns.

These are the slides from my "HTML5 Real-TIme and Connectivity" presentation at the San Francisco HTML5 User Group (http://sfhtml5.org). The presentation covers: Web Origin Cross Document Messaging (PostMessage) CORS XHR Level2 WebSocket Server-Sent Events (EventSource) SPDY

Innomatic è la piattaforma open source per creare applicazioni multi-tenant e piattaforme SaaS in PHP.

CouchDB is a document-oriented NoSQL database that uses JSON documents with schema-free design. It features a built-in map/reduce function for querying indexes, and uses HTTP for an API and replication. CouchDB is robust, scales well, and is designed for high availability through its append-only writing and multi-version concurrency control.

»Spring 3« ist da. Vieles ist geblieben, manches verschwunden, manches neu. Spring 3 verspricht eine verbesserte und dynamischere Konfiguration, einen leistungsfähigen und mächtigen REST-Support und viele kleine Verbesserungen. Parallel zu dem Spring 3-Release wurden auch andere Tools und Projekte aktualisiert, auf die wir ebenfalls einen Blick werfen wollen: * Wichtige Änderungen * Java Configuration * Spring Expression Language * Spring MVC und Rest * Embedded Database * SpringSource Toolsuite * Spring Roo * Grails

The most difficult part to test is the WebUI. This part of an application only manually tested. With Selenium you are able to test WebUIs on a simple way. In this article we shows you how to automating the test process.

The document describes different types and sizes of bubbles floating, bouncing, dancing, splashing, and popping as well as blowing bubbles and watching them float. Big bubbles splash while little bubbles dance and float with medium and long bubbles in lots of colorful bubbles.

This document provides an overview of the GAEO web framework for Google App Engine. It discusses what GAEO is, how it works, and how to use it. Key points include that GAEO is a Model-View-Controller based framework inspired by Rails and Zend Framework. It uses URL routing, action controllers, models and templates. The document also outlines GAEO's architecture, code layout, URL routing conventions, action controllers and models. It provides instructions on installing and using GAEO utilities to generate projects.

1) The document discusses Microsoft's close relationship with the jQuery community. It describes how Microsoft products like Visual Studio integrate with jQuery and how Microsoft contributes to official jQuery plugins. 2) It provides an overview of jQuery, including its capabilities and sample code. It also summarizes Microsoft's contributions to jQuery like the jQuery template and datalink plugins. 3) The document concludes by mentioning additional jQuery resources like the JSDefer script loader and encourages following Boris Moore's GitHub repositories for future jQuery developments.

1. The document discusses the challenges of predicting and managing slow-moving rockslides that can suddenly transition to catastrophic failure. 2. It examines three mechanical states that rockslides can be in - movement along a fully formed shear surface, movement associated with the ongoing formation of a critical shear surface through progressive failure, and creep. 3. The key issues are differentiating between these states, understanding how geometry and the mechanical properties and stress state of the slope materials influence failure, and whether a standard factor of safety approach can be reliably used to forecast behavior.

Presentation at the 10th International Symposium on Landslides and Engineered Slopes entitled "Temporal prediction in landslides – understanding the Saito effect"

Internet Explorer 10重新設計網站介面,利用HTML5和CSS3提升效能和排版。IE10支援觸控操作、手勢事件和釘選網站。開發者可以針對不同解析度和裝置設定不同樣式,並讓網站在Windows 8下快速翻頁和子母畫面切換。IE10也可以將網站打包成App發佈。

The document discusses best practices for improving web page performance. It begins by noting how slow pages negatively impact user experience and business metrics. It then outlines 14 best practices such as minimizing HTTP requests, using a content delivery network, gzipping components, optimizing images, and avoiding redirects. Additional best practices are also provided such as preloading components, minimizing DOM access, and keeping components under 25kb. Tools for measuring performance are also mentioned.

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.

This document provides an overview and introduction to using ExtJS with ASP.NET for building high performance AJAX applications. It covers setting up Visual Studio for JavaScript development, debugging techniques, an introduction to ExtJS, examples of ExtJS components like grids and form panels, handling errors, and tips for optimizing AJAX performance.

Yahoo has developed the de facto standard for building fast front-ends for websites. The bad news: you have to follow 34 rules to get there. The good news: I'll take a subset of those rules, explain them, and show how you can implement those rules in an automated fashion to minimize impact on developers and designers for your high-traffic website.

This document discusses Edge Side Includes (ESI) and its use at Yahoo. ESI allows content to be assembled at the edge from different sources, improving performance. Yahoo uses ESI to assemble pages, support legacy modules, and handle combinations of assets. ESI enables availability through caching and fallbacks. The future may include deeper HTTP integration and smarter assembly of includes.

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 proper asset ordering, lazy loading, and reducing flash of unstyled content. It also discusses minimizing reflows and repaints as well as JavaScript optimizations to improve post-load responsiveness. The document provides an overview of jQuery internals and techniques for optimizing jQuery code.

This document discusses profiling PHP applications to improve performance. It recommends profiling during development to identify inefficiencies. The document introduces Xdebug for profiling PHP code and Webgrind, a PHP frontend for visualizing Xdebug profiles. It provides an example of profiling a sample PHP application, identifying issues, making code changes, and verifying performance improvements through re-profiling.

This document discusses various techniques for optimizing the frontend performance of web applications. It provides 5 rules: 1) Only optimize when it makes a meaningful difference. 2) Download resources in parallel to reduce page load time. 3) Eliminate unnecessary requests through techniques like merging, inlining, sprites and caching. 4) Defer parsing of JavaScripts when possible to improve perceived page load speeds. 5) Consider factors like server location and content delivery networks to improve global performance.

Day 6 of 7-days "JavaScript and Rich User Interfaces" training for my colleagues. It covers ways how to speed up your application.

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.

== Abstract == Presented at Analysis of Security APIs Satellite workshop of IEEE CSF July 13th 2015, Verona, Italy http://www.dsi.unive.it/~focardi/ASA8/#program Browsers HTML sandbox is, by default, only protected by the "Same Origin Policy". Although this simple constraint gave companies a very flexible environment to play with, and was probably one of the key features that led the Web to success as we see it now, it is quite unsatisfactory from a security perspective. In fact, this solution does not face the problem of letting third party code access the whole data in the DOM when explicitly loaded and executed by the browser. This behaviour opens the door to malicious third party code attacks that can be achieved using either Cross Site Scripting (OWASP Top Ten Security risk #1 for many years) or second order attacks, such as malvertising software. In the past, several attempts to sandbox untrusted code have been made. In this talk we will focus on successes and failures of the most interesting open source sandboxing browser techniques.

This document provides an overview of HTML5 technologies including HTML5 markup, microdata/RDFa, WebFonts, Canvas, MediaQueries, performance optimizations like SPDY and HTTP 2.0. It discusses specifications from the W3C and implementations by companies. Tools for testing responsive design, fonts and browser compatibility are also mentioned. The document is written in Japanese and references the author's blog for code samples.