1) Because there is no body managing the plugin development basically any dog and their cat can write a plugin and have it published on the wordpress site and just because this person can write a plugin.. doesnt mean it is good.

2) WordPress is ultra ultra ultra (did I put enough ultras in there yet?) Database intensive.. every little thing it does it needs to query the database.. soemtimes I wonder.. did this really need a database call?  In total one one of my sites having 34 plugins and a customized template we where doing over 500 DB queries on some page loads (sometimes more)

3) WordPress takes up a huge amount of memory per page load do you want to know how taxing wordpress is on your system? download the WordPress system health plugin to find out,  I was 10001% amazed when I found out that Rendering Dashboard (index.php) was taking up almost 50MB worth of memory.

So what can we do about all this? Lucky enough for the readers at this site I am willing to share my knowledge of how we saved one of our websites from constantly crashing our server with as little as 5000 uniques a day (really thats not that many hits to be crashing servers).

Caching

Basically caching is going to be one of your saviors in optimizing your wordpress.  there are quite a few wordpress caching products out there but I tend to stick to the true and blue ones that have worked for me all this time:

wp-super-cache: Basic settings are fine, make sure you use the ON feature and check the boxes for “Don’t cache pages for logged in users.” and “Cache Rebuild”
wp-widget-cache: Yes Widgets also need to be cached,  nothing special here but I generally use the auto expire checkbox.
db cache reloaded: I expire my DB cache every 5 minutes but if you have a pretty low traffic site you can probably cache for longer.

PHP Optimization

If you are the admin of your own server I suggest installing a PHP optimizer/accelerator such as Zend or APC.  I had much better luck with APC then I did with Zend and it took my page loads from close to 50MB to 15MB, thats a huge optimization.  Im not really going to show you how to install APC here but if I have time tonight ill write another quick article on howto install it on Linux Centos.

Your template code

If you are a coder or know your way around html pretty good you can help your wordpress by going through your teplate code and taking out anything that is doing a database query that doesnt need to, a prime example of this is the header.php file:

<meta http-equiv=”Content-Type” content=”<?php bloginfo(‘html_type’); ?>; charset=<?php bloginfo(‘charset’); ?>” />

this can be just a static line like this:

<meta http-equiv=”Content-Type” content=”text/html; charset=UTF-8″ />

More Admin stuff: Optimizing Apache

I have found this apache configuration to be the most optimal for my server, im not going to go into much detail here but basically edit your httpd.conf file if you have admin rights to your server:

KeepAlive On
MaxKeepAliveRequests 200
KeepAliveTimeout 5

<IfModule prefork.c>
StartServers      50
MinSpareServers   15
MaxSpareServers   30
#ServerLimit      512
MaxClients       256
MaxRequestsPerChild  0
</IfModule>

<IfModule worker.c>
StartServers        20
MaxClients          256
MinSpareThreads     25
MaxSpareThreads     75
ThreadsPerChild     25
MaxRequestsPerChild  0
</IfModule>

Comment out some modules in Apache if you are not using them:

#LoadModule ext_filter_module modules/mod_ext_filter.so
#LoadModule expires_module modules/mod_expires.so
#LoadModule headers_module modules/mod_headers.so
#LoadModule usertrack_module modules/mod_usertrack.so
#LoadModule dav_module modules/mod_dav.so
#LoadModule status_module modules/mod_status.so
#LoadModule info_module modules/mod_info.so
#LoadModule dav_fs_module modules/mod_dav_fs.so
#LoadModule speling_module modules/mod_speling.so
#LoadModule userdir_module modules/mod_userdir.so
#LoadModule proxy_module modules/mod_proxy.so
#LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
#LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
#LoadModule proxy_http_module modules/mod_proxy_http.so
#LoadModule proxy_connect_module modules/mod_proxy_connect.so
#LoadModule cache_module modules/mod_cache.so
#LoadModule disk_cache_module modules/mod_disk_cache.so
#LoadModule file_cache_module modules/mod_file_cache.so
#LoadModule mem_cache_module modules/mod_mem_cache.so
#LoadModule version_module modules/mod_version.so

Optimizing MySQL

log-slow-queries = /var/log/mysql-slow.log
long_query_time = 1

key_buffer = 256M
max_allowed_packet = 1M
join_buffer_size = 4M
sort_buffer_size = 16M
net_buffer_length = 8K
read_buffer_size = 4M
read_rnd_buffer_size = 4M
myisam_sort_buffer_size = 16M

max_connections = 250
max_user_connections = 128
table_cache = 256
tmp_table_size = 32M
max_tmp_tables = 128

thread_cache = 40
query_cache_type = 1
query_cache_size = 32M
query_cache_limit = 2M
thread_concurrency = 8
thread_cache_size = 8

Article written by MyComputerAid.com

Post from: MyComputerAid.com Computer support

Howto optimize wordpress

Secure WordPress: This is a great plugin although some of the features dont work (such as the scan feature).  It will secure many parts of your wordpress including removing wordpress versions, putting index files in directories and blocks bad hacker queries.  Basically a must have for wordpress installs.

Admin Protector: this plugin basically puts a .htaccess type login box on your wp-admin, if you dont have users or multiple authors this plugin is very useful.

Admin SSL: This plugin will redirect your wp-admin to https:// if you dont have an ssl certificate then this plugin probably wont help you.

WordPress File Monitor: This tool is really great for monitoring what files are changing in your wordpress, its always a good indicator if your have been compromised if a file in your wordpress changes that you didnt know about.  You can schedule a scan of the files for hourly, daily etc.. the settings I like to use here are scan every 3 hours, Detection mode Hash and exclude directories wp-content/cache and wp-content/uploads

WP-DB Manager: ok so this plugin doesn’t necessarily help you not get hacked, but in the case that you do and your website goes to hell or your database gets wiped out this little tool will serve you wonders.  The secret to this one is using the automatic database backup feature and schedule it to email you the database backups once a day.  (Dont forget to use the Gzip compression!)

Put this in your wp-admin folder as .htaccess (stole this from wordpress bulletproof)

# BULLETPROOF .45.2 WP-ADMIN SECURE .HTACCESS
# The Most Common Apache Directives to force PHP5 to be used instead of PHP4
# Some web hosts have very specific directives – check with your web host first
# Remove the pound sign in front of AddType x-mapp-php5 .php for 1&1 web hosting
# AddType x-mapp-php5 .php
# Other common possibilities depending on your web host – check with your web host first
# AddHandler application/x-httpd-php5 .php
# AddHandler cgi-php5 .php
# FILTER REQUEST METHODS
RewriteCond %{REQUEST_METHOD} ^(TRACE|DELETE|TRACK) [NC]
RewriteRule ^(.*)$ – [F,L]
# QUERY STRING EXPLOITS
RewriteCond %{QUERY_STRING} ../ [NC,OR]
RewriteCond %{QUERY_STRING} boot.ini [NC,OR]
RewriteCond %{QUERY_STRING} tag= [NC,OR]
RewriteCond %{QUERY_STRING} ftp:  [NC,OR]
RewriteCond %{QUERY_STRING} http:  [NC,OR]
RewriteCond %{QUERY_STRING} https:  [NC,OR]
RewriteCond %{QUERY_STRING} mosConfig [NC,OR]
RewriteCond %{QUERY_STRING} ^.*([|]|(|)|<|>||”|;|?|*).* [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(&#x22;|&#x27;|&#x3C;|&#x3E;|&#x5C;|&#x7B;|&#x7C;).* [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(%0|%A|%B|%C|%D|%E|%F|127.0).* [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(globals|encode|localhost|loopback).* [NC,OR]
RewriteCond %{QUERY_STRING} ^.*(request|select|insert|union|declare|drop).* [NC]
RewriteRule ^(.*)$ – [F,L]

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Post from: MyComputerAid.com Computer support

Howto secure wordpress

wget http://wordpress.org/latest.zip

unzip latest.zip

cd wordpress

rm -rf wp-config-sample.php wp-content

cd ../

rm -rf rm -rf wordpress index.php license.txt readme.html wp-admin wp-app.php wp-atom.php wp-blog-header.php wp-comments-post.php wp-commentsrss2.php wp-config-sample.php wp-cron.php wp-feed.php wp-includes wp-links-opml.php wp-load.php wp-login.php wp-mail.php wp-pass.php wp-rdf.php wp-register.php wp-rss2.php wp-rss.php wp-settings.php wp-trackback.php xmlrpc.php

cp -r wordpress/* ./

Then go to yourwebsite.com/wp-admin do the update database and your done!

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Post from: MyComputerAid.com Computer support

Simple wordpress upgrade from SSH howto

http://www.facebook.com/help/contact.php?show_form=delete_account

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Post from: MyComputerAid.com Computer support

permanently delete your facebook account

1. Use Internet Explorer to go to the page you want to use as your home page. If you want to designate additional pages as a new home-page tab set, open the other pages on their own tabs.
2. Click the Home button down arrow, and choose Add or Change Home Page from the drop-down menu.
3. In the Add or Change Home Page dialog box, select the option you want.
4. Click Yes.

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Post from: MyComputerAid.com Computer support

Setting Your Home Page or Pages