Second Life is a 3-D virtual world created by its Residents. Virtual Worlds are expected to be more and more popular on the internet so their architecture might be of interest. Especially important is the appearance of open virtual worlds or metaverses. What happens when video games meet Web 2.0? What happens is the metaverse. Information Sources Second Life runs MySQL Interview with Ian Wilkes TechTrends: Inside Linden Lab Town Hall with Cory Linden InformationWeek ...

“Logstalgia (aka ApachePong) replays or streams a standard website access log (eg access.log) as a retro arcade game-like simulation”: You are thinking,”Wow! But it must be a pain to run and configure.”. Nope! Run Logstalgia and point it to your Apache log file: logstalgia /var/log/apache2/access.log Read the README.txt file included in the downloads for more command line options. Know of any other ways to visualize network traffic? Let us know in the comments. [via Debian ...

One of the most useful techniques in my HTAccess toolbox involves URL redirection using Apache’s RedirectMatch directive. With RedirectMatch, you get the powerful regex pattern matching available in the mod_alias module combined with the simplicity and effectiveness of the Redirect directive. This hybrid functionality makes RedirectMatch the ideal method for highly specific redirection. In this tutorial, we will explore the application of RedirectMatch as it applies to one of the most difficult redirect scenarios: redirecting ...

虽然我这个blog（www.awflasher.com/blog/）跑在Linux服务器上，但许多调试工作还是只能用WAMP体系，即，Windows+Apache+MySQL+PHP，许多人对这个体系很是鄙视，其实我认为，如非必须使用Windows，谁也没有必要这样来用Apache，因此，苹果粉丝和命令行专家可以绕过此文了：） 下面，我来谈一谈我在配置WAMP时频繁遇到的一个问题：80端口占用。（非IIS占用） 两年多以前，我曾经发现Skype有这个坏毛病（由于用Skype不多，现在我也不知道Skype的目的在何，欢迎赐教）。几个月前，又发现PPLive也有这个毛病，只不过那次根据处理Skype问题的经验，我很快就解决了。今天，又再次遇到这个问题时，我困惑了：既没有PPLive，也没有Skype，80还是被占用了。用netstat看端口的pid，也发现很奇怪：有时候不显示80，有时候又显示为0，这是系统限制资源，显然不是我要找的“元凶”。 Google了“pid 0 80 port”，看到了答案： Try typing ‘netstat -ao’ (with an ‘a’) at CMD and that will give you a list of everything running on each port. 我一眼就看到了那个“罪魁祸首”： C:\Users\awflasher>netstat -ao Local Address Foreign Address State PID TCP TCP 0.0.0.0:21 Pacers:0 LISTENING 511 TCP 0.0.0.0:80 Pacers:0 LISTENING 6421 用tasklist的FILTER，我们可以很快找到这个进程： C:\Users\awflasher>tasklist /FI "PID eq 6421" Image Name PID Session Name Session# Mem Usage ========================= ======== ================ =========== ============ MxDownloadServer.exe 6421 Console 1 7,980 K 原来是我电脑中“遨游浏览器”的进程。我使用遨游只是为了调试页面代码，这里我不做评价，浏览器这种敏感的话题，人各有志，各取所好。 ...

Kudo’s to Dr. Ted Pedersen for finally saying out loud (in the latest issue of Computational Linguistics, thanks to Bob Carpenter for the pointer) what I’ve long thought about academic publications on topics like information retrieval and machine learning: namely, publications of empirical results in software systems without publishing the software is a disservice to the community at best, and pointless at it’s worst. It hinders learning and it hinders the furthering of the field. ...

Setembro foi um mês bastante produtivo em termos de novidades para Wordpress. Ainda tenho bastantes para revelar para você, mas à medida que o blog vai sendo actualizado, você vai ficar a saber tudinho. Setembro foi também um mês rico em plugins para Wordpress, e hoje trago-lhe uma listagem bem completa das novidades que foram saindo para o mercado e que foi originalmente compilada pelo Performancing. Alguns desses plugins iremos traduzir para Português certamente. Fique ...

Avete letto bene. Potrete testare i vostri script PHP senza dover installare Apache sulla macchina su cui state lavorando. Vi basta scaricare QuickPHP, lanciarlo e aprire il vostro browser all'indirizzo 127.0.0.1, selezionando la vostra porta preferita. QuickPHP è un leggerissimo webserver portatile (non necessita di installazione) che supporta PHP e volendo tutte le sue estensioni (anche MySQL). Addirittura è possibile appoggiarsi ad un'installazione già attiva di PHP... Vediamo come fare... Per prima cosa scegliete il ...

We’ve figured out what mod_rewrite variables look like so we can create rewriterules and condition patterns based on the actual value. This cheatsheet is where we’ll lay them all out for quick reference. This article is meant to prepare us for the advanced mod_rewrite examples that are soon to be published. The upcoming article is going to be examples using mod_rewrite to achieve some crazy stuff… Here the focus is on identifying mod_rewrite variables and ...

What is mod_security?Mod_security is a filter for requests and responses sent to and from an Apache web server. It is the "snort" of web applications.As an example, lets say "super haxor," starts up their kiddie "Auto Haxs 4000" script and begins to pummel your web server with every known vulnerability for every known web application - perhaps even vulnerabilities that are not known the public. As mod_security parses each request to your web server, it ...

Все написанное ниже доступно к применению только на своем сервере либо на виртуальном сервере vps(vds). Отрывками про это я уже писал не раз, когда пытался настроить все у себя и решил собрать все в кучу что было. Да и для себя думаю тоже пригодится еще не раз. Имеем «сервер» конфигурации: Материнка S370 на чипсете VIA 693A, Pentium3-1000мгц, ОЗУ 1гб, жесткий диск IDE 80гб Что было вначале: Голая система Ubuntu, Apache 2.2.28, PHP5.2.4, exim (для почты. ...

Es gibt einige gute Gründe einen lokalen Mirror des eigenen Blogs zu erstellen. Eine nicht abschliessende Liste umfasst: Man kann nach Herzenslust an Themes, PlugIns und anderen Plumbing Bestandteilen der Website herumschrauben ohne dass die Besucher nur krude Fehlermeldungen zu sehen bekommen. Ein Live-Backup von dem man weiss dass es lauffähig ist kann man mit Geld gar nicht bezahlen Billige Günstige Hoster1 legen ihren Usern manchmal nervige Steine in den Weg wenn es um Performance ...

There once was a great cat, named the WAMPUS cat. However, this article is not about that cat. This article is about a server. A great majority of websites are run by a trio of services - Apache, MySQL and PHP. Apache is the web server, which handles browser requests and sends the information across the internet to your browser. PHP is the programming language that many sites are written in - this creates dynamic ...

In the last post, I described the method to install a LAMP server using apt in debian. But in some occasions, we need the latest build of the software - then we have to install it from source. Before installation, a few points to remember. These instruction are not for a production environment - this is for a development environment. Some of the commands(the make install commands) need root access. You can get that using ...

Theory is when you know something, but it doesn’t work. Practice is when something works, but you don’t know why. Programmers combine theory and practice: Nothing works and they don’t know why. Before I even really get started with explaining this framework or why it’s become my new best friend, I’ve got to make a very up front and honest statement. I ABSOLUTELY LOVE RAPID DEVELOPMENT! If something can be done in 5 minutes versus ...

Benchmark: Apache2 vs. Lighttpd (Static HTML Files) This benchmark shows how Apache2 (version 2.2.3) and lighttpd (version 1.4.13) perform compared to each other when delivering a static HTML file (about 50KB in size). This benchmark was created with the help of ab (Apache benchmark) on a VMware vm (Debian Etch); if you try this yourself, your numbers might differ (depending on your hardware), but the tendency should be the same.

Apache Solr 1.3.0 has been released. This version contains many, many improvements and bug fixes. High on my list are things like a good first step on distributed search support, integrated spell checking, support for Lucene’s “More Like This”, and the much needed Data Import Handler. Of course, one can’t forget about the numerous performance improvements. Since this release is using a very recent version of Lucene, it takes advantage of all of the improvements ...

作者:FinalBSD 日期:2008-09-11 原文地址:http://www.sanotes.net/html/y2008/181.html 需求： 一台apache上要服务很多的虚拟主机，这些虚拟主机的域名具有规律性，比如说是：xxx.example.com 实现： 使用mod_rewrite进行跳转 优点： * 不需要为每一个虚拟主机配置一段； * 新增了vhost不需要重启apache，只需要编辑vhosts.map即可； 缺点： * 无法为特定的vhosts设定具体配置 配置： RewriteEngine On RewriteMap lowercase int:tolower RewriteMap vhost txt:/usr/local/etc/apache22/vhost.map RewriteCond ${lowercase:%{SERVER_NAME}} ^(.+)$ RewriteCond ${vhost:%1} ^(/.*)$ RewriteRule ^/(.*)$ %1/$1 /usr/local/etc/apache22/vhost.map的内容是： site1.example.com /usr/local/www/data/1 site2.example.com /usr/local/www/data/2 site3.example.com /usr/local/www/data/3 site4.example.com /usr/local/www/data/4 site5.example.com /usr/local/www/data/5 site6.example.com /usr/local/www/data/6 原理： 1.构建2个映射表，分别是lowercase和vhost; 2.对每个URL进行RewriteCond检查，比如http://Site5.Example.com/index.html 2.1 第一条RewriteCond: RewriteCond ${lowercase:%{SERVER_NAME}} ^(.+)$ 1)这里首先查询lowercase表，lowercase表属于int类型，使用apache内部函数tolower将 key:Site5.Example.... 2)查完之后用查询到的Value进行RewriteCond判断 input='site5.example.com' pattern='^(.+)$' => matched 2.2 第二条RewriteCond: RewriteCond ${vhost:%1} ^(/.*)$ 1)这里首先查询vhost表，vhost表属于txt类型，key:site5.example.com对应value为/usr/local/www/data/5. 2)查完之后用查询到的value进行RewriteCond判断 input='/usr/local/www/data/5' pattern='^(/.*)$' => matched 3.在2条RewriteCond都符合的情况下，执行RewriteRule规则： RewriteRule ^/(.*)$ ...

How To Block Spammers/Hackers With Apache2's mod_spamhaus (Debian Etch) mod_spamhaus is an Apache module that uses DNSBL in order to block spam relay via web forms, preventing URL injection, block http DDoS attacks from bots and generally protecting your web service denying access to a known bad IP address.

The GWT shell uses a stripped down and somewhat customized version of the Apache Tomcat servlet container as its development mode server. While this is a Tomcat instance, GWT sets things up differently to automate certain elements and facilitate quick and easy development mode use and testing.

这个一些个人的总结,加上一些前辈的经验, 下面的优化总的来讲,在我使用的一年多中,还是相当有用的,优化和不优化还是比较明显的. 下面开始正题 ExtendedStatus On 因为写入额外的时间标志，设off。 MPM：worker－多进程多线程新型设计，适合高流量服务,但是不稳定,对象php之类支持非常差,不推荐， prefork－稳定，无线程，占用较多内存。 HostnameLookups off 关掉,这样少一dns查询，日志处理可以另外用软件。 注释LoadMoule指令中不要的模块。 一般说来，不需要的模块包括： LoadModule auth_basic_module modules/mod_auth_basic.so #LoadModule auth_digest_module modules/mod_auth_digest.so LoadModule authn_file_module modules/mod_authn_file.so #LoadModule authn_alias_module modules/mod_authn_alias.so LoadModule authn_anon_module modules/mod_authn_anon.so #LoadModule authn_dbm_module modules/mod_authn_dbm.so LoadModule authn_default_module modules/mod_authn_default.so LoadModule authz_host_module modules/mod_authz_host.so LoadModule authz_user_module modules/mod_authz_user.so LoadModule authz_owner_module modules/mod_authz_owner.so LoadModule authz_groupfile_module modules/mod_authz_groupfile.so #LoadModule authz_dbm_module modules/mod_authz_dbm.so LoadModule authz_default_module modules/mod_authz_default.so LoadModule ldap_module modules/mod_ldap.so #LoadModule authnz_ldap_module modules/mod_authnz_ldap.so LoadModule include_module modules/mod_include.so LoadModule log_config_module modules/mod_log_config.so LoadModule logio_module modules/mod_logio.so LoadModule env_module modules/mod_env.so LoadModule ext_filter_module modules/mod_ext_filter.so LoadModule mime_magic_module ...