Class BaseCache<T>`Abstract`

Base class for all caches. All caches should extend this class.

Type Parameters

T = Generation[]

Hierarchy (view full)

BaseCache
- InMemoryCache

Index

Constructors

Properties

Methods

lookup makeDefaultKeyEncoder update

Constructors

constructor

new BaseCache<T>(): BaseCache<T>
Type Parameters
- T = Generation[]
Returns BaseCache<T>

Properties

`Protected`keyEncoder

keyEncoder: HashKeyEncoder = getCacheKey

Methods

`Abstract`lookup

lookup(prompt, llmKey): Promise<null | T>
Parameters
- prompt: string
- llmKey: string
Returns Promise<null | T>
- Defined in langchain-core/src/caches/base.ts:64

makeDefaultKeyEncoder

makeDefaultKeyEncoder(keyEncoderFn): void
Sets a custom key encoder function for the cache. This function should take a prompt and an LLM key and return a string that will be used as the cache key.
Parameters
- keyEncoderFn: HashKeyEncoder
  The custom key encoder function.
Returns void
- Defined in langchain-core/src/caches/base.ts:60

`Abstract`update

update(prompt, llmKey, value): Promise<void>
Parameters
- prompt: string
- llmKey: string
- value: T
Returns Promise<void>
- Defined in langchain-core/src/caches/base.ts:66