@jbagatta/johnny-cache/build/core/l1-cache/redis-l1-cache-manager.js

A robust distributed dictionary for coordinating and caching expensive operations in a distributed environment

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.RedisL1CacheManager = void 0;
const keyDeletedChannel = (namespace) => `johnny-cache-keydel:${namespace}`;
class RedisL1CacheManager {
    constructor(redis, namespace, l1Cache) {
        this.redis = redis;
        this.namespace = namespace;
        this.l1Cache = l1Cache;
        this.subscriber = this.redis.duplicate();
        this.subscriber.subscribe(keyDeletedChannel(this.namespace));
        this.subscriber.on('message', (channel, message) => {
            try {
                const key = message;
                l1Cache.del(key);
            }
            catch (error) {
                console.error(error);
            }
        });
    }
    get(key) {
        return this.l1Cache.get(key) ?? null;
    }
    set(key, value, ttl) {
        return ttl ? this.l1Cache.set(key, value, ttl) : this.l1Cache.set(key, value);
    }
    async delete(key) {
        this.l1Cache.del(key);
        await this.redis.publish(keyDeletedChannel(this.namespace), key);
    }
    ttl(key, ttlMs) {
        this.l1Cache.ttl(key, ttlMs * 0.001);
    }
    close() {
        this.subscriber.unsubscribe(keyDeletedChannel(this.namespace));
        this.subscriber.quit().catch(console.error);
    }
}
exports.RedisL1CacheManager = RedisL1CacheManager;