- Introduced CacheMultiGetRequest and CacheMultiGetResponse interfaces to define the structure for multi-get operations.
- Implemented multiGet method in CacheClient to retrieve multiple cache values in a single request, handling cache misses gracefully.
- Enhanced error handling to manage 404 errors when the backend does not support multiGet, returning null for missing keys.
- Updated the `get` method in CacheClient to return null for cache misses instead of throwing an error.
- Improved error handling to differentiate between expected 404 errors and other exceptions.
- Adjusted related tests to verify null returns for non-existent keys, ensuring robust cache behavior.
- Added CacheClient to manage cache operations including get, put, delete, and scan.
- Updated createClient function to include cache client.
- Added new types and interfaces for cache requests and responses.
- Implemented comprehensive tests for cache functionality, covering health checks, value storage, retrieval, deletion, and scanning.
