Download or read book Web Caching written by Duane Wessels and published by "O'Reilly Media, Inc.". This book was released on 2001 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the World Wide Web, speed and efficiency are vital. Users have little patience for slow web pages, while network administrators want to make the most of their available bandwidth. A properly designed web cache reduces network traffic and improves access times to popular web sites--a boon to network administrators and web users alike.Web Caching hands you all the technical information you need to design, deploy, and operate an effective web caching service. It starts with the basics of how web caching works, from the HTTP headers that govern cachability to cache validation and replacement algorithms.Topics covered in this book include: Designing an effective cache solution Configuring web browsers to use a cache Setting up a collection of caches that can talk to each other Configuring an interception cache or proxy Monitoring and fine-tuning the performance of a cache Configuring web servers to cooperate with web caches Benchmarking cache products The book also covers the important political aspects of web caching, including privacy, intellectual property, and security issues.Internet service providers, large corporations, or educational institutions--in short, any network that provides connectivity to a wide variety of users--can reap enormous benefit from running a well-tuned web caching service. Web Caching shows you how to do it right.
Download or read book Website Optimization written by Andrew B. King and published by "O'Reilly Media, Inc.". This book was released on 2008-07-08 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remember when an optimized website was one that merely didn't take all day to appear? Times have changed. Today, website optimization can spell the difference between enterprise success and failure, and it takes a lot more know-how to achieve success. This book is a comprehensive guide to the tips, techniques, secrets, standards, and methods of website optimization. From increasing site traffic to maximizing leads, from revving up responsiveness to increasing navigability, from prospect retention to closing more sales, the world of 21st century website optimization is explored, exemplified and explained. Website Optimization combines the disciplines of online marketing and site performance tuning to attain the competitive advantage necessary on today's Web. You'll learn how to improve your online marketing with effective paid and natural search engine visibility strategies, strengthened lead creation and conversion to sales methods, and gold-standard ad copywriting guidelines. Plus, your increased site speed, reduced download footprint, improved reliability, and improved navigability will work synergistically with those marketing methods to optimize your site's total effectiveness. In this book for business and IT managers, author Andrew King, president of Website Optimization, LLC, has assembled experts in several key specialties to teach you: Search engine optimization -- addressing best (and worst) practices to improve search engine visibility, including step-by-step keyword optimization guidelines, category and tag cloud creation, and guerilla PR techniques to boost inbound links and improve rankings Pay-per-click optimization -- including ad copywriting guidelines, setting profit-driven goals, calculating and optimizing bids, landing page optimization, and campaign management tips Optimizing conversion rates -- increasing leads with site landing page guidelines, such as benefit-oriented copy, credibility-based design, value hierarchies, and tips on creating unique selling propositions and slogans Web performance tuning -- optimizing ways to use (X)HTML, CSS, and Ajax to increase speed, reduce your download footprint, and increase reliability Advanced tuning -- including client-side techniques such as on-demand content, progressive enhancement, and inline images to save HTTP requests. Plus server-side tips include improving parallelism, using cache control, browser sniffing, HTTP compression, and URL rewriting to remap links and preserve traffic Web metrics -- illustrating the best metrics and tools to gather details about visitors and measure web conversion and success rates. Covering both search marketing metrics and web performance measures including Pathloss and waterfall graphs Website Optimization not only provides you with a strategy for success, it also offers specific techniques for you and your staff to follow. A profitable website needs to be well designed, current, highly responsive, and optimally persuasive if you're to attract prospects, convert them to buyers, and get them to come back for more. This book describes precisely what you need to accomplish to achieve all of those goals.
Download or read book Optimization in Web Caching written by Terence P. Kelly and published by . This book was released on 2002 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Web Caching and Content Delivery written by A. Bestavros and published by Elsevier. This book was released on 2001-12-14 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Web Content Caching and Distribution Workshop (WCW) is a premiere technical meeting for researchers and practitioners interested in all aspects of content caching, distribution and delivery on the Internet. The 2001 WCW meeting was held on the Boston University Campus. Building on the successes of the five previous WCW meetings, WCW01 featured a strong technical program and record participation from leading researchers and practitioners in the field. This book consists of all the technical papers presented at WCW'01. It includes 20 full papers and four R&D synopses that were presented at the workshop. The collection reflects the latest research in this important area, including such topics as Content Delivery Networks (CDNs), tools and methodology of performance measurements, Web characterization as relates to caching and content distribution, scalable web server architectures, cache prefetching, emerging new edge services, and delivery of streaming content.
Download or read book Cache Optimization Models and Algorithms written by Georgios Paschos and published by . This book was released on 2020-08-20 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Caching refers to the act of replicating information at a faster (or closer) medium with the purpose of improving performance. This deceptively simple idea has given rise to some of the hardest optimization problems in the fields of computer systems, networking, and the Internet; many of which remain unsolved several years after their conception. While a wealth of research contributions exists from the topics of memory systems, data centers, Internet traffic, CDNs, and recently wireless networks, the literature is dispersed and overlapping at times. In this monograph, the authors focus on the fundamental underlying mathematical models, into a powerful framework for performing optimization of caching systems. In doing so they the present the reader with a solid background for the anticipated explosion in caching research, and provide a didactic view into how engineers have managed to infuse mathematical models into the study of caching over the last 40 years. Written by leading researchers from academia and industry, this monograph provides students, researchers and practicing engineers with a concise introduction to challenges and solutions for implementing caching in modern computing systems.
Download or read book High Performance Browser Networking written by Ilya Grigorik and published by "O'Reilly Media, Inc.". This book was released on 2013-09-11 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: How prepared are you to build fast and efficient web applications? This eloquent book provides what every web developer should know about the network, from fundamental limitations that affect performance to major innovations for building even more powerful browser applications—including HTTP 2.0 and XHR improvements, Server-Sent Events (SSE), WebSocket, and WebRTC. Author Ilya Grigorik, a web performance engineer at Google, demonstrates performance optimization best practices for TCP, UDP, and TLS protocols, and explains unique wireless and mobile network optimization requirements. You’ll then dive into performance characteristics of technologies such as HTTP 2.0, client-side network scripting with XHR, real-time streaming with SSE and WebSocket, and P2P communication with WebRTC. Deliver superlative TCP, UDP, and TLS performance Speed up network performance over 3G/4G mobile networks Develop fast and energy-efficient mobile applications Address bottlenecks in HTTP 1.x and other browser protocols Plan for and deliver the best HTTP 2.0 performance Enable efficient real-time streaming in the browser Create efficient peer-to-peer videoconferencing and low-latency applications with real-time WebRTC transports
Download or read book Web Caching and Replication written by Michael Rabinovich and published by Addison-Wesley Professional. This book was released on 2002 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Web Caching and Replication, two AT&T Labs experts bring together real-world implementations, the latest IETF and W3C technical standards, and the field's most advanced research, offering systematic guidance for maximizing Web scalability and performance. The authors first introduce key concepts of Web caching and replication.They introduce HTTP's support for caching and replication, and broadly characterize Web behavior, offering practical rules of thumb for optimizing performance. Next, they focus on caching, helping implementers realistically assess proxy caching, deploy proxies in corporate and ISP networks; and utilize cooperative proxy caching. They offer in-depth insights into cache consistency, and caching the "uncacheable" -- including "cookied" and dynamic content. Part III introduces today's best techniques for web replication, offering in-depth coverage of content delivery networks, server selection, content placement, and more. For all networking professionals, IT professionals, and engineers involved with building or optimizing Internet services or equipment; for content delivery specialists and service providers; and for owners of large sites concerned about scalability and performance.
Download or read book Cache Optimization for the Modern Web written by Jenny Lam and published by . This book was released on 2015 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Key-value stores are used by companies such as Facebook and Twitter to improve the performance of web applications with a high read-to-write ratio. They operate as caches for frequently requested content or data that is costly to obtain, such as the result of a computationally expensive database query. We study two design problems associated with key-value stores.The first problem we consider is the design of eviction policies that are particularly suited to the constraints of a key-value store. Current implementations use Least Recently Used (LRU), a popular and simple eviction policy. However, LRU does not take into consideration the time to obtain an item from its source (referred to as fetch time) which can vary widely. If the fetch times for items stored in a cache vary significantly, a more sophisticated eviction algorithm such as GreedyDual-Size (GDS) provides better performance in terms of total fetch time. But GDS can be costly to implement. We propose an eviction policy called Cost Adaptive Multi-queue eviction Policy (CAMP) that closely approximates GDS's caching performance while being as fast as LRU to implement. We show that CAMP's competitive ratio is a factor of (1 + epsilon) more than GDS's competitive ratio, where epsilon is a parameter that depends on the number of bits of precision used to compute the eviction priority of cached items.Key-value stores also typically manage the placement of data objects. The current state of the art uses a technique called slab allocation in which items are assigned to one of several LRU queues according to their size. To handle changing workloads, the queues must be dynamically resized. Current schemes have been handling this problem in an ad hoc manner. We propose a variant of CAMP that manages its own memory layout and show that if it is given a modest amount of additional memory to account for fragmentation, it is competitive against an offline optimal algorithm that does not specify layout.The second problem we investigate is the design of memory hierarchies using multiple types of memory technology for caching. Advances in storage technology have introduced many new types of storage media which present a system designer with a wide array of options in designing caching middleware. We provide a systematic way to use knowledge about the frequencies of read and write requests to individual data items in order to determine the optimal cache configuration. The ability to replicate a data item in more than one memory bank can benefit the overall performance of the system with a faster recovery time in the event of a memory failure. The key design question we are concerned with is how to best assign data items to memory banks, given that we have the option of replicating objects in order to maximize performance. Our performance model takes into account retrieval, update and recovery time. We study two variants of this problem. In the first variant which we call the cache configuration problem, we have a fixed budget and must decide which types of the storage media to purchase, how much of each to buy and how to place data objects in this system once the capacity of each storage medium is determined. In the second variant which we call the subset assignment problem, the storage hardware has already been purchased and we are solely concerned with data placement.Both problems are NP-hard since they are generalizations of the knapsack problem. We make the reasonable practical assumption that there are many more data items than there will be storage media, and that each storage medium is orders of magnitude larger than any single data item. These assumptions allow us to efficiently find nearly optimal solutions. Thus, for the cache configuration problem, we show that the problem is equivalent to the multiple-choice knapsack problem. We provide results from an empirical study that evaluates our algorithm in the context of a memory hierarchy for a key-value store as well as a host-side cache to store disk pages. The results show that selective replication is appropriate with certain failure rates, but that it is not advantageous to replicate data items with slim failure rates. For the subset assignment problem, we devise an algorithm loosely based on the cycle canceling algorithm for the minimum cost flow problem and give theoretical bounds for its running time. Our algorithm solves the linear programming relaxation in time O(3d(d+1) poly (d) · n log(n) log (nC) log(Z)), where d is the number of storage media, n the number of distinct data items that can be requested, Z the maximum size of any object, and C the maximum cost for storing an item. (Abstract shortened by UMI.)
Download or read book Optimizing Network Performance with Content Switching written by Matthew Syme and published by Prentice Hall Professional. This book was released on 2004 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to the applications of content aware networking such as server load balancing, firewall load balancing, Web caching and Web cache redirection. This is growing to a $1 billion market. The authors are specialists from Nortel.
Download or read book Performance Optimization Techniques And Strategies written by Smashing Magazine and published by Smashing Magazine GmbH. This book was released on 2014-09-24 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slow loading times break the user experience of any website — no matter how well crafted it might be. In fact, it only takes three seconds until users lose their interest in a site if they don't get a response immediately. If another site happens to be 250ms faster than yours, then users are more inclined to switch to a competitor’s website in no time. Web fonts, heavy JavaScript, third-party widgets — all of them can sum up to become a real performance bottleneck. Nevertheless, tracking that down does not only improve loading times but also results in a much snappier experience and a higher user engagement. In this eBook, we’ve compiled an entire selection of front-end and server-side techniques that will help you tackle such bottlenecks. Find out how to speed up existing websites, build high-performance sites (for both mobile and desktop), and prepare them for heavy-load situations. Furthermore, you’ll learn more about how performance improvements and a 97–99 Google PageSpeed score were achieved on Smashing Magazine, as well as how optimization strategies can enhance real-life projects by taking a closer look at Pinterest’s paint performance case study. With the help of this eBook, you’ll notice that it’s high time to dig deeper into your own site and examine it closely. Why don’t you polish it up and make it even better than it already is! TABLE OF CONTENTS: - Improving Smashing Magazine’s Performance: A Case Study - How To Speed Up Your WordPress Website - You May Be Losing Users If Responsive Web Design Is Your Only Mobile Strategy - How To Make Your Websites Faster On Mobile Devices - Creating High-Performance Mobile Websites - Don’t Get Crushed By The Load: Optimization Techniques And Strategies - Speed Up Your Mobile Website With Varnish - Cache Invalidation Strategies With Varnish Cache - Gone In 60 Frames Per Second: A Pinterest Paint Performance Case Study
Download or read book Website Optimization written by Andrew B. King and published by "O'Reilly Media, Inc.". This book was released on 2008 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computing and information technology.
Download or read book High Performance Web Sites written by Steve Souders and published by "O'Reilly Media, Inc.". This book was released on 2007-09-11 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Want your web site to display more quickly? This book presents 14 specific rules that will cut 25% to 50% off response time when users request a page. Author Steve Souders, in his job as Chief Performance Yahoo!, collected these best practices while optimizing some of the most-visited pages on the Web. Even sites that had already been highly optimized, such as Yahoo! Search and the Yahoo! Front Page, were able to benefit from these surprisingly simple performance guidelines. The rules in High Performance Web Sites explain how you can optimize the performance of the Ajax, CSS, JavaScript, Flash, and images that you've already built into your site -- adjustments that are critical for any rich web application. Other sources of information pay a lot of attention to tuning web servers, databases, and hardware, but the bulk of display time is taken up on the browser side and by the communication between server and browser. High Performance Web Sites covers every aspect of that process. Each performance rule is supported by specific examples, and code snippets are available on the book's companion web site. The rules include how to: Make Fewer HTTP Requests Use a Content Delivery Network Add an Expires 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 Avoid Redirects Remove Duplicates Scripts Configure ETags Make Ajax Cacheable If you're building pages for high traffic destinations and want to optimize the experience of users visiting your site, this book is indispensable. "If everyone would implement just 20% of Steve's guidelines, the Web would be adramatically better place. Between this book and Steve's YSlow extension, there's reallyno excuse for having a sluggish web site anymore." -Joe Hewitt, Developer of Firebug debugger and Mozilla's DOM Inspector "Steve Souders has done a fantastic job of distilling a massive, semi-arcane art down to a set of concise, actionable, pragmatic engineering steps that will change the world of web performance." -Eric Lawrence, Developer of the Fiddler Web Debugger, Microsoft Corporation
Download or read book Web Caching and Its Applications written by S.V. Nagaraj and published by Springer Science & Business Media. This book was released on 2006-04-18 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last decade has seen a tremendous growth in the usage of the World Wide Web. The Web has grown so fast that it seems to be becoming an unusable and slow behemoth. Web caching is one way to tame and make this behemoth a friendly and useful giant. The key idea in Web caching is to cache frequently accessed content so that it may be used profitably later. This book focuses entirely on Web caching techniques. Much of the material in this book is very relevant for those interested in understanding the wide gamut of Web caching research. It will be helpful for those interested in making use of the power of the Web in a more profitable way. Audience and purpose of this book This book presents key concepts in Web caching and is meant to be suited for a wide variety of readers including advanced undergraduate and graduate students‚ programmers‚ network administrators‚ researchers‚ teachers‚ techn- ogists and Internet Service Providers (ISPs).
Download or read book Ajax Design Patterns written by Michael Mahemoff and published by "O'Reilly Media, Inc.". This book was released on 2006-06-29 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ajax, or Asynchronous JavaScript and XML, exploded onto the scene in the spring of 2005 and remains the hottest story among web developers. With its rich combination of technologies, Ajax provides astrong foundation for creating interactive web applications with XML or JSON-based web services by using JavaScript in the browser to process the web server response. Ajax Design Patterns shows you best practices that can dramatically improve your web development projects. It investigates how others have successfully dealt with conflictingdesign principles in the past and then relays that information directly to you. The patterns outlined in the book fall into four categories: Foundational technology: Examines the raw technologies required for Ajax development Programming: Exposes techniques that developers have discovered to ensure their Ajax applications are maintainable Functionality and usability: Describes the types of user interfaces you'll come across in Ajax applications, as well as the new types of functionality that Ajax makes possible Development: Explains the process being used to monitor, debug, and test Ajax applications Ajax Design Patterns will also get you up to speed with core Ajax technologies, such as XMLHttpRequest, the DOM, and JSON. Technical discussions are followed by code examples so you can see for yourself just what is-and isn't-possible with Ajax. This handy reference will help you to produce high-quality Ajax architectures, streamline web application performance, and improve the userexperience. Michael Mahemoff holds a PhD in Computer Science and Software Engineering from the University of Melbourne, where his thesis was "Design Reuse in Software Engineering and Human-Computer Interaction." He lives in London and consults on software development issues in banking, health care, and logistics. "Michael Mahemoff's Ajax Design Patterns is a truly comprehensive compendium of webapplication design expertise, centered around but not limited to Ajax techniques. Polished nuggets of design wisdom are supported by tutorials and real-world code examples resulting in a book thatserves not only as an intermediate to expert handbook but also as an extensive reference for building rich interactive web applications." --Brent Ashley, remote scripting pioneer
Download or read book Web Optimization with Memory Caching Servers written by Wanli Cheng and published by . This book was released on 1998 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Caching and Materialization for Web Databases written by Alexandros Labrinidis and published by Now Publishers Inc. This book was released on 2010-02-19 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Database systems have been driving dynamic web sites since the early 90s; nowadays, even seemingly static web sites employ a database back-end for personalization and advertising purposes. In order to keep up with the high demand fuelled by the rapid growth of the Internet, a number of caching and materialization techniques have been proposed for web databases over the years. The main goal of these techniques is to improve performance, scalability, and manageability of database-driven dynamic web sites, in a way that the quality of data is not compromised. Although caching and materialization are well understood concepts in the traditional database and networking/operating systems literature, the Web and web databases bring forth unique characteristics that warrant new techniques and approaches. In this survey, we adopt a data management point of view to describe the system architectures of web databases, and analyze the research issues related to caching and materialization in such architectures. We also present the state of the art in caching and materialization for web databases and organize current approaches according to the fundamental questions, namely how to store, how to use, and how to maintain cached/materialized web data. Finally, we associate work in caching and materialization for web databases to similar techniques in other related areas, such as data warehousing, distributed systems, and distributed databases.
Download or read book Dynamic Content Cache Policy Optimization for Large scale Web Applications written by Cyrus Tishan Ethirnayagam Mills and published by . This book was released on 2004 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
