Dummy cache implementation that doesn’t do anything.
Implements: ICache
Description
The NullCache class allows you to implement a dummy cache that doesn’t do anything.
Important points
- It can be used in testing or in situations where a cache is required but must be disabled.
Instance methods
remove
Removes a value from the cache by its key.
@override
Future<dynamic> remove(String? correlationId, String key)
- correlationId: String? - (optional) transaction id used to trace execution through a call chain.
- key: String - unique value key.
- returns: Future<dynamic> - Future that receives an null for success
retrieve
Retrieves a cached value from the cache using its key. If the value is missing in the cache or expired, it returns null.
@override
Future<dynamic> retrieve(String? correlationId, String key)
- correlationId: String? - (optional) transaction id used to trace execution through the call chain.
- key: String - unique value key.
- returns: Future<dynamic> - cached value or null, if the value wasn’t found or timeout expired.
store
Stores a value in the cache with expiration time.
@override
Future<dynamic> store(String? correlationId, String key, value, int timeout)
- correlationId: String? - (optional) transaction id used to trace execution through the call chain.
- key: String - unique value key.
- value: dynamic - value to store.
- timeout: int - expiration timeout in milliseconds.
- returns: Future<dynamic> - cached value stored in the cache.