Documentation

LockRegistry
in package

LockRegistry is used internally by existing adapters to protect against cache stampede.

It does so by wrapping the computation of items in a pool of locks. Foreach each apps, there can be at most 20 concurrent processes that compute items at the same time and only one per cache-key.

Tags
author

Nicolas Grekas p@tchwork.com

Table of Contents

$files  : mixed
The number of items in this list controls the max number of concurrent processes.
$lockedFiles  : mixed
$openedFiles  : mixed
$signalingCallback  : mixed
$signalingException  : mixed
compute()  : mixed
setFiles()  : array<string|int, mixed>
Defines a set of existing files that will be used as keys to acquire locks.
open()  : mixed

Properties

$files

The number of items in this list controls the max number of concurrent processes.

private static mixed $files = [__DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'AbstractAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'AbstractTagAwareAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'AdapterInterface.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'ApcuAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'ArrayAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'ChainAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'CouchbaseBucketAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'CouchbaseCollectionAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'DoctrineAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'DoctrineDbalAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'FilesystemAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'FilesystemTagAwareAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'MemcachedAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'NullAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'ParameterNormalizer.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'PdoAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'PhpArrayAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'PhpFilesAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'ProxyAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'Psr16Adapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'RedisAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'RedisTagAwareAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'TagAwareAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'TagAwareAdapterInterface.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'TraceableAdapter.php', __DIR__ . DIRECTORY_SEPARATOR . 'Adapter' . DIRECTORY_SEPARATOR . 'TraceableTagAwareAdapter.php']

$signalingCallback

private static mixed $signalingCallback

$signalingException

private static mixed $signalingException

Methods

setFiles()

Defines a set of existing files that will be used as keys to acquire locks.

public static setFiles(array<string|int, mixed> $files) : array<string|int, mixed>
Parameters
$files : array<string|int, mixed>
Return values
array<string|int, mixed> —

The previously defined set of files

open()

private static open(int $key) : mixed
Parameters
$key : int
Return values
mixed —

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