Squid Cache（简称为Squid）是一个流行的自由软件（GNU通用公共许可证）的代理服务器和Web缓存服务器。Squid有广泛的用途，从作为网页服务 器的前置cache服务器缓存相关请求来提高Web服务器的速度，到为一组人共享网络资源而缓存万维网，域名系统和其他网络搜索，到通过过滤流量帮助网络 安全，到局域网通过代理上网。Squid主要设计用于在Unix一类系统运行。Squid的发展历史相当悠久，功能也相当完善。除了HTTP外，对于 FTP与HTTPS的支持也相当好，在3.0 测试版中也支持了IPv6。

下载：ftp://ftp.squid-cache.org/pub/archive/3.2/squid-3.2.0.1.tar.bz2

3.2.x 分支有较大更新，具体参见releasenote.
查看ReleaseNote: http://www.squid-cache.org/Versions/v3/3.2/RELEASENOTES.html

注：squid 3.1.6 同步放出.
源码： ftp://ftp.squid-cache.org/pub/squid/squid-3.1.6.tar.bz2
patch: ftp://ftp.squid-cache.org/pub/squid/squid-3.1.6.patch

Nginx(engine x)是一个高性能的HTTP和反向代理服务器,也是一个IMAP/POP3/SMTP代理服务器. Nginx是由Igor Sysoev为俄罗斯访问量第二的Rambler.ru站点开发的,它已经在该站点运行超过两年半了.其特点是占有内存少，并发能力强，事实上Nginx 的并发能力确实在同类型的网页伺服器中表现较好。目前中国大陆使用Nginx网站用户有：新浪、网易、腾讯。

Changes with nginx 0.8.48                                        03 Aug 2010

*) Change: now the "server_name" directive default value is an empty
name "".
Thanks to Gena Makhomed.

*) Change: now the "server_name_in_redirect" directive default value is
"off".

*) Feature: the $geoip_dma_code, $geoip_area_code, and
$geoip_region_name variables.
Thanks to Christine McGonagle.

*) Bugfix: the "proxy_pass", "fastcgi_pass", "uwsgi_pass", and
"scgi_pass" directives were not inherited inside "limit_except"
blocks.

*) Bugfix: the "proxy_cache_min_uses", "fastcgi_cache_min_uses"
"uwsgi_cache_min_uses", and "scgi_cache_min_uses" directives did not
work; the bug had appeared in 0.8.46.

*) Bugfix: the "fastcgi_split_path_info" directive used incorrectly
captures, if only parts of an URI were captured.
Thanks to Yuriy Taraday and Frank Enderle.

*) Bugfix: the "rewrite" directive did not escape a ";" character
during copying from URI to query string.
Thanks to Daisuke Murase.

*) Bugfix: the ngx_http_image_filter_module closed a connection, if an
image was larger than "image_filter_buffer" size.

下载地址：
linux:http://nginx.org/download/nginx-0.8.48.tar.gz
win:http://nginx.org/download/nginx-0.8.48.zip

Tomcat是由Apache软件基金会下属的Jakarta项目开发的一个Servlet容器，按照Sun Microsystems提供的技术规范，实现了对Servlet和JavaServer Page（JSP）的支持，并提供了作为 Web服务器的一些特有功能，如Tomcat管理和控制平台、安全域管理和Tomcat阀等。 下载：http://tomcat.apache.org/download-60.cgi
changeLog:http://tomcat.apache.org/tomcat-6.0-doc/changelog.html

由于Tomcat本身也内含了一个HTTP服务器，它也可以 被视作一个单独的Web服务器。但是，不能将 Tomcat 和 Apache Web 服务器混淆，Apache Web Server 是一个用 C 语言实现的 HTTP web server；这两个 HTTP web server 不是捆绑在一起的。Apache Tomcat 包含了一个配置管理工具，也可以通过编辑 XML 格式的配置文件来进行配置。

MySQL（发音：[ˌmaɪ ɛs kjuː ˈɛl]，但也经常读作My- SEQuel）是一个开放源码的关系数据库管理系统，开发者为瑞典MySQL AB公司，现为Sun公司的一部分。2009年Oracle宣布收购Sun公司，因此MySQL可能成为Oracle旗下产品。MySQL由于性能高、成 本低、可靠性好，已经成为最流行的开源数据库，被广泛地应用在Internet上的中小型网站中。随着MySQL的不断成熟，它也逐渐用于更多大规模网站 和应用，比如维基百科、Google和Facebook。非常流行的开源软件组合LAMP中的M就是指 MySQL。

下载：http://mysql.proserve.nl/Downloads/MySQL-5.1/
查看更新：http://dev.mysql.com/doc/refman/5.1/en/news-5-1-49.html

昨日，在php官网上php5.2.x系列稳定版更新到php5.2.14，PHP5.3.x系列更新到PHP5.3.3。同时这个版本主要改进了 PHP5.2.x系列的稳定性，修复60多个BUG，部分BUG与安全相关。这个版本标志着对PHP5.2系列更新的结束，在此版本之后不再积极更新 PHP5.2x，其安全补丁可能以单个形式发布。

与此同时，PHP开发团队发布了PHP5.3.3，修复了近100个BUG，鼓励所有PHP5.2系列的用户升级到PHP5.3。 但是实际上国内很多PHP程序对PHP5.3的支持都有不少小问题。

此外，PHP官网着重列出一个PHP5.3.3新的不兼容特性：在命名空间里，和类名一致的函数不再被作为一个构造函数。不过没有使用namespace的类不受影响。

<?php namespace Foo; class Bar { public function Bar() { // 在PHP 5.3.0-5.3.2版本作为构造函数 // 在PHP 5.3.3作为一个普通函数 } } ?>

以下是PHP5.3.3的修复清单。 Rewrote var_export() to use smart_str rather than output buffering, prevents data disclosure if a fatal error occurs (CVE-2010-2531).

• Fixed a possible resource destruction issues in shm_put_var().
• Fixed a possible information leak because of interruption of XOR operator.
• Fixed a possible memory corruption because of unexpected call-time pass by refernce and following memory clobbering through callbacks.
• Fixed a possible memory corruption in ArrayObject::uasort().
• Fixed a possible memory corruption in parse_str().
• Fixed a possible memory corruption in pack().
• Fixed a possible memory corruption in substr_replace().
• Fixed a possible memory corruption in addcslashes().
• Fixed a possible stack exhaustion inside fnmatch().
• Fixed a possible dechunking filter buffer overflow.
• Fixed a possible arbitrary memory access inside sqlite extension.
• Fixed string format validation inside phar extension.
• Fixed handling of session variable serialization on certain prefix characters.
• Fixed a NULL pointer dereference when processing invalid XML-RPC requests (Fixes CVE-2010-0397, bug #51288).
• Fixed SplObjectStorage unserialization problems (CVE-2010-2225).
• Fixed possible buffer overflows in mysqlnd_list_fields, mysqlnd_change_user.
• Fixed possible buffer overflows when handling error packets in mysqlnd.
• Key enhancements in PHP 5.3.3 include:
• Upgraded bundled sqlite to version 3.6.23.1.
• Upgraded bundled PCRE to version 8.02.
• Added FastCGI Process Manager (FPM) SAPI.
• Added stream filter support to mcrypt extension.
• Added full_special_chars filter to ext/filter.
• Fixed a possible crash because of recursive GC invocation.
• Fixed bug #52238 (Crash when an Exception occured in iterator_to_array).
• Fixed bug #52041 (Memory leak when writing on uninitialized variable returned from function).
• Fixed bug #52060 (Memory leak when passing a closure to method_exists()).
• Fixed bug #52001 (Memory allocation problems after using variable variables).
• Fixed bug #51723 (Content-length header is limited to 32bit integer with Apache2 on Windows).
• Fixed bug #48930 (__COMPILER_HALT_OFFSET__ incorrect in PHP >= 5.3).
• For users upgrading from PHP 5.2 there is a migration guide available on http://php.net/migration53, detailing the changes between those releases and PHP 5.3.

PHP5.2.14主要更新清单

• Rewrote var_export() to use smart_str rather than output buffering, prevents data disclosure if a fatal error occurs.
• Fixed a possible interruption array leak in strrchr().(CVE-2010-2484)
• Fixed a possible interruption array leak in strchr(), strstr(), substr(), chunk_split(), strtok(), addcslashes(), str_repeat(), trim().
• Fixed a possible memory corruption in substr_replace().
• Fixed SplObjectStorage unserialization problems (CVE-2010-2225).
• Fixed a possible stack exaustion inside fnmatch().
• Fixed a NULL pointer dereference when processing invalid XML-RPC requests (Fixes CVE-2010-0397, bug #51288).
• Fixed handling of session variable serialization on certain prefix characters.
• Fixed a possible arbitrary memory access inside sqlite extension. Reported by Mateusz Kocielski.
• Key enhancements in PHP 5.2.14 include:
• Upgraded bundled PCRE to version 8.02.
• Updated timezone database to version 2010.5.
• Fixed bug #52238 (Crash when an Exception occured in iterator_to_array).
• Fixed bug #52237 (Crash when passing the reference of the property of a non-object).
• Fixed bug #52041 (Memory leak when writing on uninitialized variable returned from function).
• Fixed bug #51822 (Segfault with strange __destruct() for static class variables).
• Fixed bug #51552 (debug_backtrace() causes segmentation fault and/or memory issues).
• Fixed bug #49267 (Linking fails for iconv on MacOS: "Undefined symbols: _libiconv").

下载:PHP5.3