Configuration Options

Configuration Options

Options are passed to Cache::create() (or a handler constructor) as an associative array. Keys are matched case-insensitively, so prefix, Prefix and PREFIX are the same option. Anything you omit falls back to the default.

$cache = Cache::create(File::class, [
'path' => __DIR__ . '/var/cache',
'prefix' => 'app_',
]);
$cache->getOption('prefix'); // "app_"$cache->getOption('mode', 0640); // 0640 (default returned when unset)$cache->setOptions(['prefix' => 'v2_']); // merge more in; returns $this

Shared option — every handler

Option	Type	Default	Description
prefix	string	cache_	Prepended to every key after validation; scopes clear() on the File and PDO handlers. Set to '' to disable.

File

Option	Type	Default	Description
path	string	(required)	Directory the cache files live in. Must exist and be writable.
mode	int|null	0640	chmod() mode per file; null skips chmod().

Cache::create(File::class, [
'path' => __DIR__ . '/var/cache',
'mode' => 0600,
'prefix' => 'app_',
]);

PDO

Option	Type	Default	Description
dsn	string	mysql:host=localhost;dbname=test	PDO connection DSN.
username	string|null	null	Connection user.
password	string|null	null	Connection password.
charset	string	utf8mb4	MySQL only (SET NAMES).
collation	string	utf8mb4_general_ci	MySQL only.
table	string	cache	Table name; must match [A-Za-z0-9_]+.

Cache::create(PDO::class, [
'dsn' => 'pgsql:host=127.0.0.1;dbname=app',
'username' => 'app',
'password' => 'secret',
'table' => 'app_cache',
]);

Redis

Option	Type	Default	Description
host	string	127.0.0.1	Server host.
port	int	6379	Server port.
timeout	int|float	0	Connection timeout in seconds (0 = unlimited).
password	string|null	null	AUTH password; skipped when null.
database	int|null	0	Database index to SELECT.

Cache::create(Redis::class, [
'host' => 'redis.internal',
'port' => 6379,
'database' => 3,
'timeout' => 1.5,
]);

Memcache(d)

Option	Type	Default	Description
host	string	127.0.0.1	Server host.
port	int	11211	Server port.
weight	int	1	Server weight (Memcached only).
default_ttl	int	0	TTL used when set() gets no TTL. 0 = no expiry.

Cache::create(Memcache::class, [
'host' => 'memcached.internal',
'port' => 11211,
'default_ttl' => 300,
]);

WinCache — deprecated

Option	Type	Default	Description
default_ttl	int	0	TTL used when set() gets no TTL. 0 = no expiry.

Notes on types

• Numeric options are coerced leniently: a numeric string like '6379' is accepted for an integer option. A non-numeric value falls back to the default.
• path and the PDO table are validated and will throw a CacheException if missing/invalid — see each handler page.

Next steps

• The Cache Factory — how options are applied and merged.
• The individual handler pages for the meaning and edge cases of each option.