本文介绍了Facebook贡献给开源社区的一系列关键技术，包括高性能图片处理系统Haystack、HTTP加速器Varnish、日志聚合服务器Scribe等。此外还提供了iOS、Android及其它平台的SDK，帮助开发者更好地集成Facebook功能。
[size=large]HipHop PHP[/size]
[url]https://github.com/facebook/hiphop-php/[/url]
[size=large]Three20 is an Objective-C library for iPhone developers[/size]
[url]https://github.com/facebook/three20[/url]
[size=large]Haystack[/size]
Haystack是Facebook高性能的图片存储/检索系统。（严格来说，Haystack是一对象存储，所以它不一定要存储图片。）Haystack的工作量超大。Facebook上有超过2百亿张图片，每张图片以四种不同分辨率保存，所以，Facebook有超过8百亿张图片。
Haystack的作用不单是处理大量的图片，它的性能才是亮点。我们在前面已提到，Facebook每秒大概处理120万张图片，这个数据并不包括其CDN处理的图片数。这可是个惊人的数据！！！
[url]http://haystacksearch.org/[/url]
Varnish是一个HTTP加速器，担当负载均衡角色，同时也用于快速处理缓存内容。
Facebook用Varnish处理图片和用户照片，每天都要处理十亿级的请求。和Facebook其他的应用应用一样，Varnish也是开源的。
[url]http://www.varnish-cache.org/[/url]
Objective Sqlite is a leightweight Objective-C wrapper for sqlite. It provides a number of convenience functions for binding and retrieving data from sqlite results.
[url]https://github.com/facebook/ObjSqlite[/url]
[url]https://github.com/toastdriven/django-haystack[/url]
[size=large]This open source iOS library allows you to integrate Facebook into your iOS application include iPhone, iPad and iPod touch.[/size]
[url]https://github.com/facebook/facebook-ios-sdk[/url]
[size=large]This open source Java library allows you to integrate Facebook into your Android application[/size]
[url]https://github.com/facebook/facebook-android-sdk[/url]
[size=large]This SDK provides a light wrapper around the Facebook Graph API.[/size]
[url]https://github.com/facebook/csharp-sdk[/url]
[size=large]Scribe is a server for aggregating log data that's streamed in real
time from clients. It is designed to be scalable and reliable.[/size]
[url]https://github.com/facebook/scribe[/url]
JSGameBench helps the community improve game performance and we look forward to HTML5 game engine developers improving on our ideas and crushing these number!
[url]https://github.com/facebook/jsgamebench[/url]
[url]https://github.com/facebook/hiphop-php/[/url]
[size=large]Three20 is an Objective-C library for iPhone developers[/size]
[url]https://github.com/facebook/three20[/url]
[size=large]Haystack[/size]
Haystack是Facebook高性能的图片存储/检索系统。（严格来说，Haystack是一对象存储，所以它不一定要存储图片。）Haystack的工作量超大。Facebook上有超过2百亿张图片，每张图片以四种不同分辨率保存，所以，Facebook有超过8百亿张图片。
Haystack的作用不单是处理大量的图片，它的性能才是亮点。我们在前面已提到，Facebook每秒大概处理120万张图片，这个数据并不包括其CDN处理的图片数。这可是个惊人的数据！！！
[url]http://haystacksearch.org/[/url]
Varnish是一个HTTP加速器，担当负载均衡角色，同时也用于快速处理缓存内容。
Facebook用Varnish处理图片和用户照片，每天都要处理十亿级的请求。和Facebook其他的应用应用一样，Varnish也是开源的。
[url]http://www.varnish-cache.org/[/url]
Objective Sqlite is a leightweight Objective-C wrapper for sqlite. It provides a number of convenience functions for binding and retrieving data from sqlite results.
[url]https://github.com/facebook/ObjSqlite[/url]
[url]https://github.com/toastdriven/django-haystack[/url]
[size=large]This open source iOS library allows you to integrate Facebook into your iOS application include iPhone, iPad and iPod touch.[/size]
[url]https://github.com/facebook/facebook-ios-sdk[/url]
[size=large]This open source Java library allows you to integrate Facebook into your Android application[/size]
[url]https://github.com/facebook/facebook-android-sdk[/url]
[size=large]This SDK provides a light wrapper around the Facebook Graph API.[/size]
[url]https://github.com/facebook/csharp-sdk[/url]
[size=large]Scribe is a server for aggregating log data that's streamed in real
time from clients. It is designed to be scalable and reliable.[/size]
[url]https://github.com/facebook/scribe[/url]
JSGameBench helps the community improve game performance and we look forward to HTML5 game engine developers improving on our ideas and crushing these number!
[url]https://github.com/facebook/jsgamebench[/url]
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