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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OCP;
/**
* Interface ICacheFactory
*
* @since 7.0.0
*/
interface ICacheFactory {
/**
* Check if any memory cache backend is available
*
* @return bool
* @since 7.0.0
*/
public function isAvailable(): bool;
/**
* Check if a local memory cache backend is available
*
* @return bool
* @since 14.0.0
*/
public function isLocalCacheAvailable(): bool;
/**
* create a cache instance for storing locks
*
* @param string $prefix
* @return IMemcache
* @since 13.0.0
*/
public function createLocking(string $prefix = ''): IMemcache;
/**
* create a distributed cache instance
*
* @param string $prefix
* @return ICache
* @since 13.0.0
*/
public function createDistributed(string $prefix = ''): ICache;
/**
* create a local cache instance
*
* @param string $prefix
* @return ICache
* @since 13.0.0
*/
public function createLocal(string $prefix = ''): ICache;
/**
* Create an in-memory cache instance
*
* Useful for remembering values inside one process. Cache memory is cleared
* when the object is garbage-collected. Implementation may also expire keys
* earlier when the TTL is reached or too much memory is consumed.
*
* Cache keys are local to the cache object. When building two in-memory
* caches, there is no data exchange between the instances.
*
* @param int $capacity maximum number of cache keys
* @return ICache
* @since 28.0.0
*/
public function createInMemory(int $capacity = 512): ICache;
}
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