Cachalot

Cachalot (cache a lot) is an easy to use caching library. It supposed to do the only one thing - return cached callback result.

Installation

Define the following requirement in your composer.json file:

"require": {
    "ihor/cachalot": "2.3"
}

Usage

// With Cachalot cache you can easily cache results of different types of functions
$cache = new \Cachalot\ArrayCache();

// built-in functions
$length = $cache->getCached('strlen', ['hello world']); 

// user defined functions
$unique = $cache->getCached('uniqueValues', [[1, 2, 3, 1, 2, 3]]);

// static methods
$result = $cache->getCached(['Calculator', 'subtract'], [1, 2]);

// instance methods
$square = $cache->getCached([new Calculator(), 'square'], [5]);

// anonymous functions
$reason = $cache->getCached($getErrorReason, [], \Cachalot\Cache::ONE_DAY, 'error-reason');

// callable objects
$trimed = $cache->getCached(new Trimmer(), [' hello world ']);

Reference

Cache API

getCached($callback, array $args = array(), $expireIn = 0, $suffix = null, $useSuffixAsKey = false)

Returns cached $callback result

$callback is the function (callable) which results we want to be cached
$args are the arguments passed to the $callback
$expireIn sets cache TTL in seconds
$suffix is needed to avoid collisions when callback is an anonymous function $useSuffixAsKey when true cache suffix will be used as a cache key

$length = $cache->getCached('strlen', ['hello world']);

To have possibility to use Cachalot as a regular caching library when needed it contains classic cache methods

contains($key)

Returns true if cache contains entry with given key

if ($cache->contains('lastVisit')) {
    echo 'This is not the first visit';
}

get($key)

Returns cached value by key or false if there is no cache entry for the given key

if ($lastVisitDate = $cache->get('lastVisit')) {
    echo sprintf('Last visit was at %s', $lastVisitDate);
}

set($key, $value, $expireIn = 0)

Caches value by key. When $expireIn = 0 the value is cached forever

$cache->set('lastVisit', time());

delete($key)

Deletes cache entry by key

$cache->delete('lastVisit');

clear()

Deletes all cache entries

$cache->clear();

Back-ends

Cachalot\ApcCache

Stores data in APC

$cache = new Cachalot\ApcCache();

Cachalot\XcacheCache

Stores data in Xcache

$cache = new Cachalot\XcacheCache();

Cachalot\MemcacheCache

Stores data in Memcached using Memcache PHP extension

$memcache = new \Memcache();
$memcache->connect('unix:///usr/local/var/run/memcached.sock', 0);

$cache = new \Cachalot\MemcacheCache($memcache);

Cachalot\MemcachedCache

Stores data in Memcached using Memcached PHP extension

$memcached = new \Memcached();
$memcached->addServer('/usr/local/var/run/memcached.sock', 0);

$cache = new \Cachalot\MemcachedCache($memcached);

Cachalot\RedisCache

Stores data in Redis

$redis = new \Redis();
$redis->connect('127.0.0.1');
$redis->select(1);

$cache = new \Cachalot\RedisCache($redis);

Cachalot\CouchbaseCache

Stores data in Couchbase using Couchbase PHP SDK 1.x

$couchbase = new \Couchbase('127.0.0.1', '', '', 'default');

$cache = new \Cachalot\CouchbaseCache($couchbase);

Cachalot\Couchbase2Cache

Stores data in Couchbase using Couchbase PHP SDK 2.x

$cluster = new \CouchbaseCluster('couchbase://localhost');
$bucket = $cluster->openBucket('default');

$cache = new \Cachalot\Couchbase2Cache($bucket);

Cachalot\ArrayCache

Stores data in PHP array

$cache = new \Cachalot\ArrayCache();

Cachalot\BlackholeCache

Never stores any data

$cache = new \Cachalot\BlackholeCache();