DbCache ​
- Type
- Class
- Namespace
- craft\cache
- Inherits
- craft\cache\DbCache » yii\caching\DbCache » yii\caching\Cache » yii\base\Component » yii\base\BaseObject
- Implements
- yii\base\Configurable, yii\caching\CacheInterface
- Since
- 3.4.14
Public Properties ​
| Property | Description |
|---|---|
| behaviors | yii\base\Behavior – List of behaviors attached to this component. |
| cacheTable | string – Name of the DB table to store cache content. |
| db | yii\db\Connection, array, string – The DB connection object or the application component ID of the DB connection. |
| defaultDuration | integer – Default duration in seconds before a cache entry will expire. |
| gcProbability | integer – The probability (parts per million) that garbage collection (GC) should be performed when storing a piece of data in the cache. |
| keyPrefix | string – A string prefixed to every cache key so that it is unique globally in the whole cache storage. |
| serializer | array, null, false – The functions used to serialize and unserialize cached data. |
Protected Properties ​
| Property | Description |
|---|---|
| isVarbinaryDataField |
Public Methods ​
| Method | Description |
|---|---|
| __call() | Calls the named method which is not a class method. |
| __clone() | This method is called after the object is created by cloning an existing one. |
| __construct() | Constructor. |
| __get() | Returns the value of a component property. |
| __isset() | Checks if a property is set, i.e. defined and not null. |
| __set() | Sets the value of a component property. |
| __unset() | Sets a component property to be null. |
| add() | Stores a value identified by a key into cache if the cache does not contain this key. |
| attachBehavior() | Attaches a behavior to this component. |
| attachBehaviors() | Attaches a list of behaviors to the component. |
| behaviors() | Returns a list of behaviors that this component should behave as. |
| buildKey() | Builds a normalized cache key from a given key. |
| canGetProperty() | Returns a value indicating whether a property can be read. |
| canSetProperty() | Returns a value indicating whether a property can be set. |
| className() | Returns the fully qualified name of this class. |
| delete() | Deletes a value with the specified key from cache. |
| detachBehavior() | Detaches a behavior from the component. |
| detachBehaviors() | Detaches all behaviors from the component. |
| ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. |
| exists() | Checks whether a specified key exists in the cache. |
| flush() | Deletes all values from cache. |
| gc() | Removes the expired data values. |
| get() | Retrieves a value from cache with a specified key. |
| getBehavior() | Returns the named behavior object. |
| getBehaviors() | Returns all behaviors attached to this component. |
| getOrSet() | Method combines both set() and get() methods to retrieve value identified by a $key, or to store the result of $callable execution if there is no cache available for the $key. |
| hasEventHandlers() | Returns a value indicating whether there is any handler attached to the named event. |
| hasMethod() | Returns a value indicating whether a method is defined. |
| hasProperty() | Returns a value indicating whether a property is defined for this component. |
| init() | Initializes the DbCache component. |
| madd() | Stores multiple items in cache. Each item contains a value identified by a key. |
| mget() | Retrieves multiple values from cache with the specified keys. |
| mset() | Stores multiple items in cache. Each item contains a value identified by a key. |
| multiAdd() | Stores multiple items in cache. Each item contains a value identified by a key. |
| multiGet() | Retrieves multiple values from cache with the specified keys. |
| multiSet() | Stores multiple items in cache. Each item contains a value identified by a key. |
| off() | Detaches an existing event handler from this component. |
| offsetExists() | Returns whether there is a cache entry with a specified key. |
| offsetGet() | Retrieves the value from cache with a specified key. |
| offsetSet() | Stores the value identified by a key into cache. |
| offsetUnset() | Deletes the value with the specified key from cache This method is required by the interface ArrayAccess. |
| on() | Attaches an event handler to an event. |
| set() | Stores a value identified by a key into cache. |
| trigger() | Triggers an event. |
Protected Methods ​
| Method | Description |
|---|---|
| addValue() | Stores a value identified by a key into cache if the cache does not contain this key. |
| addValues() | Adds multiple key-value pairs to cache. |
| deleteValue() | Deletes a value with the specified key from cache This is the implementation of the method declared in the parent class. |
| flushValues() | Deletes all values from cache. |
| getDataFieldName() | |
| getDataFieldValue() | |
| getValue() | Retrieves a value from cache with a specified key. |
| getValues() | Retrieves multiple values from cache with the specified keys. |
| isVarbinaryDataField() | |
| setValue() | Stores a value identified by a key in cache. |
| setValues() | Stores multiple key-value pairs in cache. |
addValue() ​
Stores a value identified by a key into cache if the cache does not contain this key.
This is the implementation of the method declared in the parent class.
Arguments ​
$key(string) – The key identifying the value to be cached$value(string) – The value to be cached. Other types (if you have disabled serializer) cannot be saved.$duration(integer) – The number of seconds in which the cached value will expire. 0 means never expire.
Returns ​
boolean – True if the value is successfully stored into cache, false otherwise
setValue() ​
Stores a value identified by a key in cache.
This is the implementation of the method declared in the parent class.
Arguments ​
$key(string) – The key identifying the value to be cached$value(string) – The value to be cached. Other types (if you have disabled serializer) cannot be saved.$duration(integer) – The number of seconds in which the cached value will expire. 0 means never expire.
Returns ​
boolean – True if the value is successfully stored into cache, false otherwise