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WordPress with W3 Total Cache on Nginx with APC (Virtualmin)

…tcgi, each virtual domain will load its own php.ini file, so you can add the APC directives to that file (/home/domainname/etc/php5/php.ini) Add the following to php.ini (adjust to your requirements) [APC] extension = apc.enabled = 1 apc.shm_segments = 1 apc.shm_size = 12M apc.optimization = 0 apc.num_files_hint = 256 apc.user_entries_hint = 1024 apc.ttl = 0 […]

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APC INFO Monitor

APC Cache Considerations for Virtual Hosting Environments

…irtual server. However with 200+ virtual hosts all running PHP script packages, as is the case with a commodity shared hosting server, this will use a lot of memory, and you will need somewhere in the neighborhood of 10-30GB apc.shm_size if you attempt to configure a single APC cache for the entire server. My web […]

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Tuning Apache and MySQL for Best Performance in a Shared Virtual Hosting Environment

…the appropriate beginning value for [mysqld] max_connections. Begin with max_connections set slightly higher than Apache’s maxclients. If you are running database caching via APC, you may lower max_connections, because APC will serve the busiest queries directly from cache. Take Time to Get a Realistic Assessment of MySQL Performance If you have a PHP opcode and […]

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Cpanel Mailman mailing lists: cannot manage lists after migrating to new host

…re currently are no publicly-advertised Mailman mailing lists on visit the administrators configuration page for an unadvertised list, open a URL similar to this one, but with a ‘/’ and the right list name appended. If you have the proper authority, you can also create a new mailing list. This turned out to be […]

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Apache and MySql Performance Tuning for High Traffic WordPress Website on Cpanel

…he publisher after responding to a plea for assistance in a support forum. Though the site was running on a dedicated server with 8GB RAM, it was crashing frequently under load. The developer tried implementing APC Alternative PHP Cache and W3 Total Cache, but these measures turned out to be incompatible with some of […]

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Varnish VCL and Config for WordPress with W3 Total Cache

I have been working on a Varnish front-end for Apache, to be used with WordPress sites. I described the architecture in Load Balancing Virtualmin WordPress Hosting Server with Varnish on AWS. I now have a configuration that seems to work for all WordPress features, including logged-out commenting. This configuration also works well with W3 Total […]

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Install phpMyAdmin with SSL on CentOS, Amazon Linux, RedHat (Apache or NginX)

…ttp:// rpm -Uvh On Amazon Linux, epel-release is already loaded. Edit /etc/yum.repos.d/epel.repo to enabled=1 Edit /etc/yum.repos.d/epel.repo to only include necessary software packages: includepkgs=phpMyAdmin php-php-gettext I have removed RPMforge repo due to some recent problems, but if you still need rpm forge repo:… 2, 0, 0, 0 and 133.7

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