Optimising Web Application Frontend

This document discusses tuning web performance from a frontend perspective. It covers the impact of performance on user experience, development tools for optimization like Firebug and Chrome DevTools, and various techniques for website optimization including reducing requests, optimizing images, leveraging caching, minimizing JavaScript, and improving loading efficiency. The goal is to provide an overview of concepts and tools for optimizing frontend performance.

This document discusses how to maintain large web applications over time. It describes how the author's team managed a web application with over 65,000 lines of code and 6,000 automated tests over 2.5 years of development. Key aspects included packaging full releases, automating dependency installation, specifying supported environments, and automating data migrations during upgrades. The goal was to have a sustainable process that allowed for continuous development without slowing down due to maintenance issues.

This document discusses consuming web services from mobile applications. It covers common mobile development challenges like limited screen space, CPU power, and bandwidth. It then provides an overview of technologies used to access web services like XML, JSON, REST, and SOAP. Examples are given of using AsyncTask and Services in Android to make asynchronous web service calls. Code demonstrations and additional resources are also referenced.

Talk from Akamai Edge 2014 looking at some of our current web performance optimisation practices and how they may need to change as new standards and protocols emerge

View CDN performance data, learn how you can collect data on CDN performance and get tips on improving CDN performance.

This document discusses WebSockets as an improvement over previous "fake push" techniques for enabling real-time full duplex communication between web clients and servers. It notes that WebSockets use HTTP for the initial handshake but then provide a persistent, bi-directional connection. Examples are given of how WebSockets work and can be implemented in various programming languages including Ruby. Support in browsers and servers is also discussed.

This document compares the performance of normal web page loads to loads that utilize a service worker. It shows that service workers can improve performance by caching resources so that repeat visits are much faster, with the DOM content loading in under 200ms and transferring 0KB of data compared to over 2 seconds and transferring 3KB without a service worker. Resources for learning more about service workers and examples of sites that use them are also provided.

Slides from talk at London Webstandards (Sept 2014) on what the browser preloader is, how it works and why we need it

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.

WebSocket is a protocol that provides bidirectional communication over a single TCP connection. It uses an HTTP handshake to establish a connection and then transmits messages as frames that can contain text or binary data. The frames include a header with metadata like opcode and payload length. WebSocket aims to provide a standard for browser-based applications that require real-time data updates from a server.

80% of the time it takes for a web page to load is on the client side. Using all the tips in this presentation should cut 25% to 50% off the load time of optimized page requests. Drupal (6 or 7) can be used to, fairly easily, implement a whole bunch of these “front-end performance” upgrades, and knock a ton of errors off of the Yahoo! and Google speed-checker tools validation checklists.Get firebug first.

This document discusses various techniques for improving web site performance and scalability while reducing costs, including: 1. Optimizing code to reduce HTTP requests and payload size. 2. Leveraging browser caching through content expiration, HTTP compression, and cache validation. 3. Minifying and consolidating CSS and JavaScript files. 4. Using a content delivery network (CDN) to distribute static assets globally. 5. Caching data and view state to reduce database queries and payload size.

Front-end performance optimizing involves optimizing a website's HTML, CSS, JavaScript, and image files to achieve the fastest possible loading speed. This includes minimizing HTTP requests by combining files, compressing files, optimizing code by removing unused code and errors, leveraging browser caching, and parallelizing downloads across domains. The document outlines nine techniques for front-end optimization, such as optimizing file sizes, reducing download size through compression and caching, and minimizing HTTP requests through file combining and CSS sprites.

The document discusses various techniques for improving front-end website performance, including reducing the number of HTTP requests, using content delivery networks and caching, gzip compression, optimizing CSS and JavaScript loading, image optimization, and lazy loading of content not visible initially. Specific techniques mentioned include combining files, setting long cache expiration headers, minifying files, parallelizing downloads, and deferring non-critical JavaScript initialization. The goal is to render an initial version as fast as possible through optimizations that reduce page load time.

1. A website is loaded by a browser through a multi-step process involving DNS lookups, TCP connections, downloading resources like HTML, CSS, JS, and images. This process can be slow due to the number of individual requests and dependencies between resources. 2. Ways to optimize the loading process include making the server fast, inlining critical resources, gzip compression, an optimized caching strategy, optimizing file delivery through techniques like CDNs and HTTP/2, bundling resources, optimizing images, avoiding unnecessary domains, minimizing web fonts, and JavaScript techniques like PJAX. Minifying assets can also speed up loading.

This document discusses techniques for building scalable websites with Perl, including: 1) Caching at various levels (page, partial page, and database caching) to improve performance and reduce load on application servers. 2) Using job queuing and worker processes to distribute processing-intensive tasks asynchronously instead of blocking web requests. 3) Leveraging caching and queueing libraries like Cache::FastMmap, Memcached, and Spread::Queue to implement caching and job queueing in Perl applications.

HTTP/2 provides improvements over HTTP/1.1 such as multiplexed requests, header compression and priority hints from browsers that can reduce latency. While it shows benefits in testing, real-world impacts may be more modest depending on server and client configurations. Further optimizations are still needed and HTTP/2 opens up new possibilities around features like server pushing and progressive content delivery that could enhance performance.

This document discusses optimizing graphics for their intended output. It aims to help students consider why graphics need to be optimized for quality and discuss technical aspects like bit depth, resolution, dimensions, file type and compression that must be tailored to the intended output such as screen or web. Students will complete tasks in pairs researching how the final destination of graphics impacts these settings and will write about optimizing graphics using their client brief as a reference.

The document discusses several topics related to new media technologies and their social impact. It covers the rise of user-generated content online, moral panics about new technologies, issues of copyright infringement with digital music, the evolution of the internet to incorporate user interactivity and social media, and how new devices and media platforms are changing representation and culture. New media refers to on-demand digital content across any device as well as interactive and user-generated content online.

This document discusses different types of digital file formats for graphics, including raster graphics like JPEG, TIFF, GIF, and BMP, as well as vector graphics like PSD, AI, FLA, and WMF. It provides information on what each file format stands for, examples of how it is used, advantages, and disadvantages. Methods for capturing and optimizing images are also covered, such as using scanners, cameras, and graphics tablets. Optimizing images makes the file size smaller but can lower the resolution and quality.

This document discusses optimizing graphics in Adobe Photoshop CS3 by resizing images to reduce both visual size and file size. Optimizing graphics makes images smaller in size but retains enough quality for intended uses like the web or email. The document suggests resizing graphics to around 10 times smaller for optimizing.

This is my presentation which I will be giving on 27 March 2008 at the 2nd Annual New Media Marketing Conference at Gallagher Estate, Midrand, South Africa

Social media has come a long way in a very short time and organisations are struggling to keep up. What started as a clever way to keep in touch with old school friends ten years ago has become a core part of the work of many people and their employers and so it is vital that use of social media is compliant with the laws of the land and works as a promotional tool and not a source of potential risk. Matthew Stephenson, head of information governance at the University of Salford and chairman of the Information and Records Management Society will guide you through this complex and uncertain area. Presentation by Matthew Stephenson, delivered at UCISA Using Social Media for Training on 18/04/2012.

Praveen Umanath, Product Manager at BigRock conducts a session on how to optimise web applications at httpX 2013, New Delhi

ST 14 ATLAS COPCO

This document repeats the phrases "¡¦£" and "! " " !#$%" multiple times with no other discernible words or context. It concludes with repeating the phrase "! " " !#$%".

Tim grew up loving animation and used toys to tell stories. He studied computer animation in college and learned skills like 3D modeling. His goal is to have a career in character creation or animation and someday open his own studio. He hopes to use his creative skills, problem-solving abilities, and teamwork from his family to succeed in the animation industry.

This document lists 18 different phobias that creatives must overcome, including the fear of empty spaces, colors, imperfection, praise, vertigo, words, paper, shadows, balancing, and images or icons. It encourages creatives to face their fears in order to improve their work by addressing phobias such as the fear of colors, straight lines, praise, or clusters of shapes. The list covers a wide range of potential phobias or anxieties that may hold creatives back from reaching their full potential.

This document discusses connecting to different database systems like MySQL, Oracle, PostgreSQL, and SQLite using DataObjects and retrieving data using commands. It demonstrates how to execute queries, retrieve result sets and field values, and handle data typecasting between the database and Ruby types. It also mentions implementing specs to test the database adapters according to standard specifications and supporting the BigDecimal type.

The document appears to be a collection of thoughts on art and career from an individual. It discusses taking various art courses and learning different styles. Projects mentioned include designing an album cover for a band and creating spreads, flyers, and nameplates for class. The person views their creativity as an advantage and defines success as financial stability, happiness, and being able to provide for others.

This document provides an overview of a WordPress training course presented by John Overall of FireDragonHosting.com. It begins with a Henry Ford quote about building a reputation through actions rather than plans. The document then gives a brief history of WordPress starting in 2003 with basic typography enhancements. It outlines the main sections of the WordPress admin dashboard including general settings, managing pages, posts, and blogroll links.

El documento habla sobre un proyecto de investigación que estudia el comportamiento de los consumidores. El proyecto analiza cómo los consumidores toman decisiones sobre qué productos comprar y cómo las empresas pueden usar esta información para mejorar sus estrategias de marketing. El documento no proporciona más detalles sobre el proyecto debido a que las páginas están en blanco.

1) A Rails application called "mybookshelf" was created with the default files and directories. 2) The database configuration file was set up to use a MySQL database called "mybookshelf_development". 3) A migration was generated to create a Books table with ISBN, title, and review attributes and run to set up the database. 4) A scaffold was generated for the Book model to provide default views, helpers, and layout for managing books.

Install Magento 2 on Window's environment (XAMPP) by just following the using some simple steps which has been created by our Magent Expert. Do check it and let us know if there are any issue you faced.

This document discusses 9 popular WordPress plugins that can enhance a website: WP-Touch makes websites mobile-friendly with a few simple settings. WordBooker and Twitter Blog easily connect websites to Facebook and Twitter with automated updates. Gravity Forms allows easy creation of forms. Mail Press manages email lists and subscriptions. Blubrry Power Press easily adds podcasts. XML Sitemaps and iRobots.txt help with search engine optimization. Headspace 2 allows control over SEO. These plugins can help improve websites with usability and marketing features.

jclouds is a Java multi-cloud SDK that connects tools portably to over 40 cloud providers through consistent APIs. It helps projects become cloud projects by simplifying modeling of cloud services through standards-focused APIs and strategies for addressing service differences. Code examples show initializing contexts for the CloudFiles blob store and OpenStack Nova compute service to create containers, upload blobs, and launch virtual machines across different cloud providers using a common API approach.

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.

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.