pop-cache

• Overview
• Install
• Quickstart
• APC
• Memcached
• Redis
• File
• Database
• Session

Overview

pop-cache provides the ability to cache frequently accessed content via several different adapters. The adapters all share the same interface and are interchangeable. Depending on the server environment and what's available, an application can use one of the following cache adapters:

• Apc (caching service)
• Memcached (caching service)
• Redis (caching service)
• File (directory on disk)
• Database (database caching)
• Session (short-term caching in session)

pop-cache is a component of the Pop PHP Framework.

Top

Install

Install pop-cache using Composer.

composer require popphp/pop-cache

Or, require it in your composer.json file

"require": {
    "popphp/pop-cache" : "^4.0.2"
}

Top

Quickstart

Here is a basic example to create a cache object and then save and retrieve some data from it. The adapter can be passed a "time-to-live" value in seconds (TTL). If set to 0, then the cached items will never expire:

use Pop\Cache\Cache;
use Pop\Cache\Adapter\File;

// Passing the file adapter the location on disk and the TTL
$cache = new Cache(new Adapter\File('/path/to/my/cache/dir', 300));

$cache->saveItem('foo', $data);

$data = $cache->getItem('foo');

Check if the cache has an item

if $cache->hasItem('foo') { } // Return bool

Delete item

$cache->deleteItem('foo');

Delete items

$cache->deleteItems(['foo', 'bar']);

Clear all items out of the cache

$cache->clear();

Top

APC

Using the APC adapter requires APC to be correctly set up in the environment.

use Pop\Cache\Cache;
use Pop\Cache\Adapter\Apc;

$cache = new Cache(new Apc(300));

Top

Memcached

Using the Memcached adapter requires Memcached to be correctly set up in the environment.

use Pop\Cache\Cache;
use Pop\Cache\Adapter\Memcached;

$cache = new Cache(new Memcached(300, 'localhost', 11211));

Top

Redis

Using the Redis adapter requires Redis to be correctly set up in the environment.

use Pop\Cache\Cache;
use Pop\Cache\Adapter\Redis;

$cache = new Cache(new Redis(300, 'localhost', 6379));

Top

File

Using the file adapter will simply store the cache data on the local disk.

use Pop\Cache\Cache;
use Pop\Cache\Adapter\File;

$cache = new Cache(new Adapter\File('/path/to/my/cache/dir', 300));

Top

Database

Using the database adapter will require the database to be set up correctly and the use of the pop-db component.

use Pop\Cache\Cache;
use Pop\Cache\Adapter\Database;
use Pop\Db\Db;

$cache = new Cache(
    new Database(Db::sqliteConnect(['database' => __DIR__ . '/tmp/cache.sqlite']), 300)
);

Top

Session

Using the session adapter will store the cached data in session

use Pop\Cache\Cache;
use Pop\Cache\Adapter\Session;

$cache = new Cache(new Session(300));

Top