It's usually personal preference though more web apps are supporting Redis so easier to use Redis for other web apps too. Though Memcached has a limitation in that it has a max 250 character limit for keys so some web apps which end up handling larger character length keys will have problems i.e. one of my Centmin Mod users reported such with Wordpress https://community.centminmod.com/threads/problem-memcached-and-long-urls.1661/
Redis is fairly frequently updated, offers a rich set of instructions & data types, and finally has much more sane defaults than memcache.
This add-on;
// START Redis configuration //
// Global Cache
$config['cache']['enabled'] = true;
$config['cache']['sessions'] = true;
$config['cache']['namespace'] = 'xfredis_';
$config['cache']['provider'] = 'SV\RedisCache\Redis';
$config['cache']['config'] = array(
'server' => '127.0.0.1',
'port' => 6379,
'connect_retries' => 2,
'use_lua' => true,
'compress_data' => 2,
'serializer' => 'igbinary',
// 'password' => 'password',
'read_timeout' => 1,
'timeout' => 1,
'persistent' => true,
'persistent_id' => 'global'
);
// Guest Page Cache
$config['pageCache']['enabled'] = true;
$config['pageCache']['lifetime'] = 900;
$config['pageCache']['recordSessionActivity'] = true;
$config['cache']['context']['page']['namespace'] = 'xfredispages_';
$config['cache']['context']['page']['provider'] = 'SV\RedisCache\Redis';
$config['cache']['context']['page']['config'] = array(
'server' => '127.0.0.1',
'port' => 6480,
'connect_retries' => 2,
'use_lua' => true,
'compress_data' => 6,
'serializer' => 'igbinary',
'timeout' => 1,
'persistent' => true,
'persistent_id' => 'pages'
);
// css cache
// $config['css']['enabled'] = true;
//$config['cache']['context']['css']['provider'] = 'Redis';
//$config['cache']['context']['css']['config'] = array(
// 'server' => '127.0.0.1',
// 'port' => 6481,
// 'connect_retries' => 2,
// 'use_lua' => true,
// 'compress_data' => 6,
// 'serializer' => 'igbinary',
// 'timeout' => 1,
// 'persistent' => true,
// 'persistent_id' => 'css'
//);
// END Redis configuration //// global cache
$config['cache']['enabled'] = true;
$config['cache']['namespace'] = 'xfaredis';
$config['cache']['provider'] = 'SV\RedisCache\Redis';
$config['cache']['config'] = [
'host' => '127.0.0.1',
'port' => 6479,
'database' => 2,
'compress_data' => 6,
'serializer' => 'igbinary',
'use_lua' => true,
// 'read_timeout' => 1,
// 'timeout' => 1,
// 'lifetimelimit' => 2592000,
// 'compress_threshold' => 20480,
'persistent' => true
];
// session cache
$config['cache']['sessions'] = true;
$config['pageCache']['enabled'] = true;
$config['pageCache']['lifetime'] = 900;
$config['pageCache']['recordSessionActivity'] = true;
$config['cache']['context']['page']['namespace'] = 'xfaredispagecache';
$config['cache']['context']['page']['provider'] = 'SV\RedisCache\Redis';
$config['cache']['context']['page']['config'] = [
'host' => '127.0.0.1',
'port' => 6480,
'database' => 4,
'compress_data' => 6,
'serializer' => 'igbinary',
'use_lua' => true,
// 'read_timeout' => 1,
// 'timeout' => 1,
// 'lifetimelimit' => 2592000,
// 'compress_threshold' => 20480,
'persistent' => true
];
// css cache
$config['css']['enabled'] = true;
$config['cache']['context']['css']['provider'] = 'Redis';
$config['cache']['context']['css']['namespace'] = 'xfarediscsscache_';
$config['cache']['context']['css']['config'] = [
'host' => '127.0.0.1',
'port' => 6479,
'serializer' => 'igbinary',
'database' => 7,
// 'timeout' => 1,
'persistent' => true
];
only one needs separating is really page cache from sessions.
Update: seems extending separate CSS cache isn't working 100% with webpagetest.org 3x run tests, 2nd and 3rd runs always come back with 404 content. Removing separated CSS cache config and only using global and page cache works fine for webpagetest.org 3x run tests.
$config['cache']['backendOptions']['database'] = 2;
$config['cache']['sessions'] = true;
$config['cache']['enabled'] = true;
$config['cache']['provider'] = 'SV\RedisCache\Redis';
$config['cache']['config'] = array(
'server' => 'x.x.x.x',
'port' => 6379,
'compress_data' => 6,
'password' => 'removed',
'use_lua' => true,
'read_timeout' => 1,
'timeout' => 2,
'database' => 2,
);
$config['cache']['enabled'] = true;
$config['cache']['sessions'] = true;
$config['cache']['provider'] = 'SV\RedisCache\Redis';
$config['cache']['config'] = array(
'server' => 'x.x.x.x',
'port' => 6379,
'timeout' => 2.5,
'persistent' => null,
'force_standalone' => false,
'connect_retries' => 2,
'read_timeout' => null,
'password' => 'xxxxx',
'database' => 0,
'compress_data' => 6,
'compression_lib' => null,
'use_lua' => true,
'serializer' => 'igbinary',
);
