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.
remove(correlation_id: Optional[str], key: str)
- correlation_id: Optional[str] - (optional) transaction id to trace execution through a call chain.
- key: str - a unique value key.
retrieve
Retrieves cached value from the cache using its key. If value is missing in the cache or expired, it returns None.
retrieve(correlation_id: Optional[str], key: str): Any
- correlation_id: Optional[str] - (optional) transaction id to trace execution through a call chain.
- key: str - a unique value key.
- returns: Any - a cached value or None, if value wasn’t found or timeout expired.
store
Stores value in the cache with expiration time.
store(correlation_id: Optional[str], key: str, value: Any, timeout: int): Any
- correlation_id: Optional[str] - (optional) transaction id to trace execution through call chain.
- key: str - a unique value key.
- value: Any - a value to store.
- timeout: int - expiration timeout in milliseconds.
- returns: Any - a cached value stored in the cache.