Class BaseCache`Abstract`

Base abstraction for DAOs that use a caching layer.

Provides helper methods to interact with CacheService and maps underlying cache errors into DaoError subclasses.

Hierarchy (View Summary)

BaseCache
- UserCacheDao

Index

Constructors

Properties

Methods

cacheDel cacheGet cacheMGet cacheSet mapCacheError

Constructors

`Protected`constructor

new BaseCache(): BaseCache
Initialize the BaseCache with the singleton CacheService instance.

Returns BaseCache
- Defined in src/dao/cache/BaseCache.ts:33

Properties

`Protected`cacheService

cacheService: CacheService

Instance of the CacheService used to perform cache operations.

Methods

`Protected`cacheDel

cacheDel(key: string): Promise<void>
Delete a key from cache.
Parameters
- key: string
  Cache key to remove.
Returns Promise<void>
Throws
DaoError when a cache-related error occurs.
- Defined in src/dao/cache/BaseCache.ts:128

`Protected`cacheGet

cacheGet<T>(key: string): Promise<T | null>
Get a value from cache by key.

Returns null when the key does not exist.
Type Parameters
- T
  Expected type of the cached value.
Parameters
- key: string
  Cache key to read.
Returns Promise<T | null>
The value stored under the key or null if not present.

Throws
DaoError when a cache-related error occurs.
- Defined in src/dao/cache/BaseCache.ts:69

`Protected`cacheMGet

cacheMGet<T>(keys: string[]): Promise<(T | null)[]>
Get multiple values from cache by an array of keys.

If the underlying CacheService does not provide a batch get, this method falls back to parallel single gets.
Type Parameters
- T
  Expected type of each cached value.
Parameters
- keys: string[]
  Array of cache keys to read.
Returns Promise<(T | null)[]>
An array containing the values or nulls for missing keys.

Throws
DaoError when a cache-related error occurs.
- Defined in src/dao/cache/BaseCache.ts:89

`Protected`cacheSet

cacheSet<T>(key: string, value: T, ttlSeconds?: number): Promise<void>
Set a value in cache with optional TTL.
Type Parameters
- T
  Type of the value to store.
Parameters
- key: string
  Cache key to set.
- value: T
  Value to store.
- OptionalttlSeconds: number
  Optional time-to-live in seconds.
Returns Promise<void>
Throws
DaoError when a cache-related error occurs.
- Defined in src/dao/cache/BaseCache.ts:110

`Protected`mapCacheError

mapCacheError(error: any): DaoError
Map low-level cache errors to DaoError subclasses.
Parameters
- error: any
  The original error thrown by the cache client.
Returns DaoError
A DaoError or a more specific subclass representing the failure.
- Defined in src/dao/cache/BaseCache.ts:43