Cache class in a single Class

2.5 2020-09-21 01:13 UTC

This package is auto-updated.

Last update: 2021-05-07 11:25:17 UTC


CacheOne is a cache class of service for php. It supports Redis, Memcache and/or APCU.

Unlikely other cache libraries, this library is based in group (optional). So it's suitable to invalidate a single key or an entire group of elements.

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use eftec\CacheOne;
include "vendor/autoload.php"; // composer's autoload
$cache=new CacheOne("redis","","",6379);

$cacheValue=$cache->get('','countries'); // read the cache (if any) otherwise false
if($cacheValue===false) {
    echo "generating a new list of countries..<br>";
    $cache->set('','countries',$countries,500); // store into the cache for 500 seconds.
} else {
    echo "read from cache<br>";


Creating a new instance of CacheOne

Creates a new connection using redis

use eftec\CacheOne;
include "../vendor/autoload.php";
$cache=new CacheOne("redis","","",6379);

Creates a new connection using apcu

use eftec\CacheOne;
include "../vendor/autoload.php";
$cache=new CacheOne("apcu");

Creates a new connection using memcache

use eftec\CacheOne;
include "../vendor/autoload.php";
$cache=new CacheOne("memcache","");

Creates a new connection using documentone (file system)

This example requires the library eftec/documentstoreone

use eftec\CacheOne;
include "../vendor/autoload.php";
$cache=new CacheOne("documentone",__DIR__."/base","schema"); // folder /base/schema must exists

The library DocumentStoreOne works with concurrency.

or creating a new connection, or redis, or memcache or apcu or documentone (it takes the first available)

use eftec\CacheOne;
include "../vendor/autoload.php";
$cache=new CacheOne("auto");

Storing a value

function set($group, $key, $value, $duration = 1440): bool

It stores a value inside a group and a key. It returns false if the operation failed.

Note: The duration is ignored by "documentone"

$cache->set("group","key1","hello world",500);
$cache->set("group","key2","hola mundo",500);

Group is optional and it could be used if we need to invalidate (delete) an entire group.

Getting a value

function get($group, $key, $defaultValue = false)

It gets a value stored in a group (optional) and key. If the value is not found then it returns false. Note: a false value could be a valid value.

$result=$cache->get("","key2","not found"); // if not key2 (groupless) then it returns not found 


$result=$cache->setDefaultTTL(50); // it sets the default time to live. "documentone" one uses it.
$result=$cache->getDefaultTTL();   // it gets the time to live

invalidate a key

function invalidate($group = '', $key = ''): bool

It invalidates a specific key. If the operation fails, then it returns false

$cache->invalidate("group","key1"); // invalidate a key inside a group
$cache->invalidate("","key1"); // invalidate a key without a group.

invalidate a group

invalidateGroup($group): bool

It invalidates every key(s) inside a group of groups. It also clean the catalog of the group and sets it to an empty array.

$cache->invalidateGroup("group"); // invalidate all keys inside group
$cache->invalidateGroup(["group1","group2"]); // invalidate all key inside group1 and group2

invalidate all


It invalidates (and delete all the redis repository, memcache or apcu)



It sets how the values are serialized. By default it's PHP.

$cache->setSerializer('php'); // set the serializer to php (default value)
$cache->setSerializer('json-array'); // set the serializer to json-array
$cache->setSerializer('json-object'); // set the serializer to json-object
$cache->setSerializer('none'); // set the serializer to none (the value must be serialized)


Get the how the values are serialized.

$type=$cache->getSerializer(); // get php,json-array,json-object or none

Select a database (Redis)


It selects a different database. By default the database is 0.



  • 2.5 2020-09-20
    • Separated provider in different classes. Now it also allows to use the file system (documentone).
  • 2.4 2020-09-13
    • The code was refactored.
  • 2.3.1
    • fix: The catalog is always stored as an array, even if the serializer is json-object
  • 2.3
    • Added method setSerializer() and getSerializer(). By default CacheOne uses PHP for serialization. With this feature, it is possible to serialize using json or none
  • 2.2.2 2020-03-13
    • Now the duration of the catalog is always lasting than the duration of the key
    • Tested the duration and expiration of the cache.
    • phpunit now is part of "require-dev" instead of "require"
  • 2.2.1 2020-03-12
    • Internal: key names are not store inside the group. The group is store inside the schema
    • Internal: The catalog has a duration defined by $cache->catDuration (seconds)
  • 2.2 2020-03-12
    • wrappers getCache(),setCache(),invalidateCache()
  • 2.1 2020-03-12
    • Unit test
    • get() has a default value $defaultValue
    • new method invalidateAll()
  • 2.0 2020-03-12 Updated the whole class. Now it works as a single class.
  • 1.4.2 2019-07-30 Added select() to select a different database index. It also adds timeout for the constructor
  • 1.4.1 2018-08-15 Added an internal function that obtains the id.
  • 1.4 2018-09-05 Fixed the groups
  • 1.3.1 2018-06-09 First published version


MIT License. Copyright Jorge Castro Castillo