HTTP Status Codes and Htaccess ErrorDocuments
There are a total of 57 HTTP Status Codes recognized by the Apache Web Server. Wouldn't you like to see what all those headers and their output, ErrorDocuments look like?
Manipulating HTTP Headers with htaccess
Apache .htaccess and httpd.conf have the power to send and manipulate HTTP Header Requests like sending P3P privacy headers, Content-Type: UTF-8, Content-Language, etc. The power is immense and you can do some really cool stuff with HTTP Headers!
Security with Apache htaccess Tutorial
Apache Security tips and tricks for securing Apache Web Servers using htaccess, httpd.conf, and other built-in techniques to thwart attackers. This really should be required reading for any Apache admin or user because these little tricks are so easy to do.
HTTP Packet Capturing to debug Apache
This article is a quick and easy HowTo detailing the use of Wireshark or another network sniffing program to debug your Apache .htaccess or httpd.conf files.
301 Redirect with mod_rewrite or RedirectMatch
301 Redirects using Apache mod_rewrite or RedirectMatch in .htaccess or httpd.conf
HTTP Status Codes
This is a big update from the last time I looked into this, when I enumerated 57 Status Codes that Apache 2.x was capable of handling. This list contains 83 Status Codes recognized by Apache. I compiled the latest 2.4.4 Apache in order to view the actual codes sent by a live server.. very cool. You can read about the newest HTTP Status Codes in RFC 6585.
Respond with 200 OK for 404 Not Found
What if you'd like to send a 200 OK response instead of the default 404 Not Found response using Apache .htaccess files or httpd.conf? One use would be to make sure upstream caches cache any request on an api server, as 404's are not cached.
Apache SSL in htaccess examples
SSLOptions +StrictRequire
SSLRequireSSL
SSLRequire %{HTTP_HOST} eq "google.com"
ErrorDocument 403 https://google.com
Some of the Ins and Outs of using SSL Connections with Apache.
Debugging HTTP Cache Headers with Wireshark
Boosting Googles PageSpeed Module with TMPFS
Google's mod_pagespeed speeds up your site and reduces page load time. This open-source Apache HTTP server module automatically applies web performance best practices to pages, and associated assets (CSS, JavaScript, images), all transparently like a Squid Proxy.
With TMPFS you can dramatically improve the speed of mod_pagespeed and the webpages served by it. TMPFS will store/serve the optimized PageSpeed output directly from RAM!
Get Number of Running Proccesses with PHP
Recently I had to setup a script to curl 10k urls, but it could only do 500 requests at any one time. In order to work under that limit, I created a function that returns the number of currently running processes on the machine in an extremely fast and efficient way, thus allowing the curl_multi requests to queu themselves such as GNU xargs.
Speed Tips: Turn On Compression
Use the Apache module mod_deflate to compress your static .css and .js files, speeding your site up like crazy!
ListOfErrors
MariaDB with LZ4 Compression Howto for CentOS
I really really wanted to run the latest MariaDB with LZ4 Page Compression.. it is a game changer for many types of large databases I deal with. So I compiled it manually in a way that is repeatable and follows best-practices and it's now powering this site. Now I can use InnoDB Page Compression with lzo, lzma, bzip2, snappy, or my favorite algorithm: LZ4.
Thought this would be a good chance to post a howto, and show that there is a lot you can do by compiling software yourself and breaking the package management one-click install shackles.
AskApache Password Protection 4.7 Update in 2 Weeks
I am now about 1 week away from publishing the much-anticipated 4.7 update to the AskApache Password Protection WordPress plugin. It's an upgrade I've been working on for almost 2 years (off and on)! I have been using the new version for quite some time now, and have made a lot of improvements to it, and finally I decided enough users have suffered with the old version. I am very excited for this release, it fixes all known bugs in the older versions, and brings some heavy-duty improvements to all facets of this plugin.. not to mention way better security modules (Lots more COOKIE use) based on code I use with clients.
Rare XHTML elements use for SEO
Use these standards best-practices to achieve more powerful links in terms of SEO, EM, STRONG, DFN, CODE, SAMP, KBD, VAR, CITE, ABBR, and ACRONYMQuestions I Ask Web Hosting Companies, Before Buying
The following is a transcript of a chat I had with a company called tektonic, and at that time I was looking for a cheap linux host to use for some redundancy/failover operations. I generally contact a new hosting company like this every few months.. I like to have options available in case of some kind of failure or network attack, so it's always a good idea to have a few ace linux servers in your back pocket.
If you've read any other articles on AskApache, you can see a certain obsession towards optimization, speed, and security -- so that is the purpose of the following questions.
Speed Tips: Remove Last-Modified Header
If you remove the Last-Modified and ETag header, you will totally eliminate If-Modified-Since and If-None-Match requests and their 304 Not Modified Responses.
SEO with Robots.txt
Very nice tutorial dealing with the robots.txt file. Shows examples for google and other search engines. Wordpress robots.txt and phpBB robots.txt sample files.htaccess Tricks for Webmasters
Some of my favorite htaccess examples from some of my favorite .htaccess tutorials. These cut-and-paste ready htaccess code snippets are very useful for website and server administrators.
PHP htaccess tips and tricks
Htaccess php tips and tricks for the Apache HTTPD Web Server, mostly these tips show you how to run customized versions with customized php.ini files, I require custom php.ini files because they are so useful!
Htaccess Mod_Rewrite – Guidedddd
Apache Variable Fun in htaccess
Server and Environment Variables are used by The Apache HTTP Server by provides a mechanism for storing information. This information can be used to control various operations such as logging or access control.
Speed Tips: Turn Off ETags
By removing the ETag header, you disable caches and browsers from being able to validate files, so they are forced to rely on your Cache-Control and Expires header.
Speed Tips: Add Future Expires Headers
A first-time visitor to your page will make several HTTP requests to download all your sites files, but using the Expires header you make those files cacheable. This avoids unnecessary HTTP requests on subsequent page views.
Using FilesMatch and Files in htaccess
Some good examples for how to use the Files and FilesMatch directives in .htaccess files and httpd.conf files for Apache.
<FilesMatch ".(htm|html|css|js|php)$"> AddDefaultCharset UTF-8 DefaultLanguage en-US </FilesMatch>
Speed Tips: Add Cache-Control Headers
Using Cache-Control headers you can specify which types of proxies can cache certain content, and how long files should be cached.
Elite Log File Scrolling with Color Syntax
Scrolls the latest log entries for multiple log files to the current screen or to any other monitor or TTY in color using syntax highlighting, making debugging easier and saving a lot of time for multi-monitor workstations.
Mod_Rewrite Variables Cheatsheet
We've figured out what mod_rewrite variables look like, a cheatsheet of the actual value.
30x Faster Cache and Site Speed with TMPFS
NOT a typo.. 30x is measurable, well-documented, and easily tested. This is what open-source is about. I haven’t had time to post much the past year, I'm always working! So I wanted to make up for that by publishing an article on a topic that would blow your mind and be something that you could actually start using and really get some benefit out of it. This is one of those articles that the majority of web hosting companies would love to see in paperback, so they could burn it.
Vetted – Top 3 WordPress Speed Plugins
There are so many WordPress plugins out there now that I wanted to post my favorite 3 plugins for speeding up a WP-Powered blog. These are the 3 plugins that I install for pretty much all of my WP-Powered sites, which I run about 300 now. They work together to provide a very optimized blog for speed.
DB-Cache Reloaded does something entirely different, it saves the mysql queries that are made to the WP-database, as well as the mysql results to static files, and then through php serves those cached-files instead of re-querying the mysql database. Most mysql databases are stored on separate servers, and although many are on the same local network there is a limit to how many queries, and how many connections can take place.
So DB-Cache Reloaded basically makes WP-Super Cache work alot faster when generating the cache files, and DB-Cache Reloaded helps in a number of areas un-related to WP-Super Cache, like in the admin panel. And DB-Cache without WP-Super-Cache is a joke because it still uses the application-level and php for everything. Gotta use both (or just WPSC).
Mod_Rewrite Basic Examples
mod_rewrite is very useful in many situations. Yet some behaviors were not so obvious when I started to mess with it. After many testings, I understand it much better, now. Having said that, I do not pretend to know it perfectly. I also make mistakes.