@langchain/langgraph-checkpoint/dist/cache/base.d.ts

Library with base interfaces for LangGraph checkpoint savers.

import { SerializerProtocol } from "../serde/base.js";
export type CacheNamespace = string[];
export type CacheFullKey = [namespace: CacheNamespace, key: string];
export declare abstract class BaseCache<V = unknown> {
    serde: SerializerProtocol;
    /**
     * Initialize the cache with a serializer.
     *
     * @param serde - The serializer to use.
     */
    constructor(serde?: SerializerProtocol);
    /**
     * Get the cached values for the given keys.
     *
     * @param keys - The keys to get.
     */
    abstract get(keys: CacheFullKey[]): Promise<{
        key: CacheFullKey;
        value: V;
    }[]>;
    /**
     * Set the cached values for the given keys and TTLs.
     *
     * @param pairs - The pairs to set.
     */
    abstract set(pairs: {
        key: CacheFullKey;
        value: V;
        ttl?: number;
    }[]): Promise<void>;
    /**
     * Delete the cached values for the given namespaces.
     * If no namespaces are provided, clear all cached values.
     *
     * @param namespaces - The namespaces to clear.
     */
    abstract clear(namespaces: CacheNamespace[]): Promise<void>;
}