$cache
$cache :
This is the default implementation for in-memory cell collection.
Alternatives implementation should leverage off-memory, non-volatile storage to reduce overall memory usage.
deleteMultiple(\Psr\SimpleCache\iterable $keys) : boolean
Deletes multiple cache items in a single operation.
| \Psr\SimpleCache\iterable | $keys | A list of string-based keys to be deleted. |
True if the items were successfully removed. False if there was an error.
get(string $key, mixed $default = null) : mixed
Fetches a value from the cache.
| string | $key | The unique key of this item in the cache. |
| mixed | $default | Default value to return if the key does not exist. |
The value of the item from the cache, or $default in case of cache miss.
getMultiple(\Psr\SimpleCache\iterable $keys, mixed $default = null) : \Psr\SimpleCache\iterable
Obtains multiple cache items by their unique keys.
| \Psr\SimpleCache\iterable | $keys | A list of keys that can obtained in a single operation. |
| mixed | $default | Default value to return for keys that do not exist. |
A list of key => value pairs. Cache keys that do not exist or are stale will have $default as value.
has(string $key) : boolean
Determines whether an item is present in the cache.
NOTE: It is recommended that has() is only to be used for cache warming type purposes and not to be used within your live applications operations for get/set, as this method is subject to a race condition where your has() will return true and immediately after, another script can remove it making the state of your app out of date.
| string | $key | The cache item key. |
set(string $key, mixed $value, null|integer|\DateInterval $ttl = null) : boolean
Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
| string | $key | The key of the item to store. |
| mixed | $value | The value of the item to store, must be serializable. |
| null|integer|\DateInterval | $ttl | Optional. The TTL value of this item. If no value is sent and the driver supports TTL then the library may set a default value for it or let the driver take care of that. |
True on success and false on failure.
setMultiple(\Psr\SimpleCache\iterable $values, null|integer|\DateInterval $ttl = null) : boolean
Persists a set of key => value pairs in the cache, with an optional TTL.
| \Psr\SimpleCache\iterable | $values | A list of key => value pairs for a multiple-set operation. |
| null|integer|\DateInterval | $ttl | Optional. The TTL value of this item. If no value is sent and the driver supports TTL then the library may set a default value for it or let the driver take care of that. |
True on success and false on failure.