cache

Cache

中文说明

Introduction

friendsofhyperf/cache wraps the drivers provided by hyperf/cache with a Laravel-style repository API. It supports PSR-16 operations, named stores, facade access, cache events, macros, and stale-while-revalidate caching.

Installation

composer require friendsofhyperf/cache

The component requires Hyperf 3.2. Its ConfigProvider registers FriendsOfHyperf\Cache\Contract\Factory and FriendsOfHyperf\Cache\Contract\Repository in the container.

Configuration

This component does not publish a separate configuration file. Configure drivers and named stores through hyperf/cache; CacheManager::store($name) passes the name to Hyperf's cache manager. The default repository resolves the default store.

Accessing a Repository

Dependency Injection

Inject Contract\Repository for the default store:

namespace App\Controller;

use FriendsOfHyperf\Cache\Contract\Repository;

class IndexController
{
    public function __construct(private Repository $cache)
    {
    }

    public function index(): mixed
    {
        return $this->cache->remember('users', 60, function () {
            return [];
        });
    }
}

Inject Contract\Factory when a named store is required:

use FriendsOfHyperf\Cache\Contract\Factory;

$cache = $factory->store('redis');

Facade

use FriendsOfHyperf\Cache\Facade\Cache;

$users = Cache::remember('users', 60, function () {
    return [];
});

$users = Cache::store('redis')->get('users');

Cache::driver($name) is an alias of Cache::store($name). Cache::resolve($name) creates a new repository instead of returning the manager's cached repository instance.

Core Operations

The repository implements Psr\SimpleCache\CacheInterface, so get(), set(), delete(), clear(), getMultiple(), setMultiple(), deleteMultiple(), and has() are available. It also provides these extensions:

Method	Behavior
get($key, $default = null)	Retrieves one item; a callable default is evaluated on a miss. Passing an array delegates to many().
put($key, $value, $ttl = null)	Stores one item; null means forever and a non-positive TTL deletes the key. Passing an associative array delegates to putMany(), with the second argument used as its TTL.
putMany($values, $ttl = null)	Stores multiple items; a non-positive TTL deletes their keys.
forever($key, $value)	Stores one item without a TTL.
add($key, $value, $ttl = null)	Stores the item only when get($key) returns null.
many($keys)	Retrieves multiple keys; associative input may provide per-key defaults.
pull($key, $default = null)	Retrieves and then deletes an item.
remember($key, $ttl, Closure $callback)	Returns the cached value or stores the callback result with a TTL.
rememberForever($key, Closure $callback) / sear(...)	Returns the cached value or stores the callback result forever.
increment($key, $value = 1) / decrement(...)	Reads, adjusts, and stores an integer value without a TTL.
flush()	Alias of clear().
missing($key)	Inverse of has($key).
getDriver() / getStore()	Returns the underlying Hyperf DriverInterface.

TTL values accepted by the extended repository methods may be seconds, DateInterval, or DateTimeInterface.

::: warning Behavioral boundaries The repository treats a cached null as a miss. add(), pull(), and the increment/decrement methods are implemented as separate operations, so they are not atomic. Although pull() accepts a $default argument, the current implementation does not pass it to get() and returns null for a missing key. :::

Stale-While-Revalidate

flexible() accepts a two-item TTL array: the first value is the fresh period and the second is the storage TTL used for both the cached value and its internal creation timestamp.

use FriendsOfHyperf\Cache\Facade\Cache;

$users = Cache::flexible('users', [30, 300], function () {
    return [];
}, [
    'seconds' => 10,
    'owner' => 'users-refresh',
]);

On a miss, the callback runs immediately. During the fresh period, the cached value is returned. After the fresh period, the stale value is returned and a deferred callback attempts to refresh it under a lock. A refresh is skipped if another process has already updated the creation timestamp.

Install both optional dependencies before using flexible():

composer require friendsofhyperf/lock hyperf/coroutine

The optional lock array accepts seconds and owner; they default to 0 and null.

Events

When the container provides Psr\EventDispatcher\EventDispatcherInterface, the repository dispatches events for reads, writes, deletes, and flushes:

• CacheHit, CacheMissed, RetrievingKey, RetrievingManyKeys
• WritingKey, WritingManyKeys, KeyWritten, KeyWriteFailed
• ForgettingKey, KeyForgotten, KeyForgetFailed
• CacheFlushing, CacheFlushed

Each event includes the store name. Single-key events also include the key, write events expose the value and TTL where applicable, and bulk events expose their keys; WritingManyKeys also exposes the values. Bulk reads additionally dispatch CacheHit or CacheMissed for each returned key.

Reference

The API is inspired by Laravel Cache, but behavior should be verified against this component's contracts and implementation.