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APC INFO Monitor

How to Configure APC Cache on Virtual Servers with PHP running under FCGId

…shm_segments = 1 apc.shm_size = 12M apc.optimization = 0 apc.num_files_hint = 512 apc.user_entries_hint = 1024 apc.ttl = 0 apc.user_ttl = 0 apc.gc_ttl = 600 apc.cache_by_default = 0 apc.filters = “-/home/username/public_html/apc/apc\.php$” apc.slam_defense = 0 apc.use_request_time = 1 apc.mmap_file_mask = /tmp/apc-accountname.XXXXXX ;OR apc.mmap_file_mask = /dev/zero apc.file_update_protection = 2 apc.enable_cli = 0 apc.max_file_size = 2M… 97, 1, 4, […]

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

…php-fastcgi, 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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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

…set resp.http.X-Cache = “HIT”; } else { set resp.http.X-Cache = “MISS”; } # remove some headers added by varnish unset resp.http.Via; unset resp.http.X-Varnish; } # sub vcl_hash { hash_data( req.url ); # altering hash so subdomains are ignored. # don’t do this if you actually run different sites on different subdomains if ( ) […]

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Chris Gilligan Web Developer, Information Architect, Web Server Administrator, Media Producer web • video • print I design and produce information and communication media for university, corporate, small business, manufacturing and non-profit clients: web sites Information architecture and design for open source content management systems Front-end UI design, HTML, PHP, LESS Linux Apache […]

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SSL and CloudFront CDN Support for WebFonts via .htaccess

…cross-site attacks, but you can allow this via Apache mod_headers, to allow your specific CloudFront (or other) domain, specified in the .htaccess file. Some sites have suggested using “*” wildcards to allow all domains… but obviously this is a security issue: with this Header, you are granting JavaScript clients basic access to your resources. I […]

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