RedisSessionPersistence

Redis-backed SessionPersistenceInterface for SessionManager.

One string key per session id, written with SETEX so Redis itself expires stale sessions — no GC pass needed, unlike the PDO/file backends.

Synopsis

final class RedisSessionPersistence implements SessionPersistenceInterface

Implements	SessionPersistenceInterface
Source	RedisSessionPersistence.php

Constructor

__construct()

public function __construct(ClientInterface $redis, string $prefix = 'session:', int $ttl = 1440, SessionCodecInterface $codec = new SessionCodec(…)): mixed

Parameter	Type	Description
$redis	ClientInterface
$prefix	string
$ttl	int
$codec	SessionCodecInterface

Returns mixed

Methods

Method	Description
delete(string $sid): void	Deletes the session’s Redis key.
load(string $sid): ?array	Reads the session’s Redis key and decodes it through the codec.
save(string $sid, array<string, mixed> $data): void

delete()

public function delete(string $sid): void

Deletes the session’s Redis key.

Deleting a key that is absent or already expired is a no-op on Redis’s side, so this reports nothing back either way.

Parameter	Type	Description
$sid	string

load()

public function load(string $sid): ?array

Reads the session’s Redis key and decodes it through the codec.

Returns null when the key is missing or expired — Redis expires it on its own, so an aged-out session is simply absent — and when the value is empty or not a string.

Parameter	Type	Description
$sid	string

Returns ?``array

save()

public function save(string $sid, array<string, mixed> $data): void

Parameter	Type	Description
$sid	string
$data	array``<``string``, ``mixed``>