descript-redis-cache

Plugin to use Redis as a cache in Descript

Usage

import de from 'descript';
import { Cache } from 'descript-redis-cache';
import { createSentinel } from '@redis/client';

const sentinel = await createSentinel({
    name: 'sentinel-db',
    sentinelRootNodes: [{
        host: 'localhost',
        port: 1234
    }]
})
    // subscribe to events if necessary
    .on('error', err => console.error('Redis Sentinel Error', err))
    .connect();


const redisCache = new Cache({ client: sentinel });

const myBlock = de.http({
    block: { /* ... */ },
    options: {
        key: ({ params }) => '_some_cache_key_by_params_',
        cache: redisCache,
    }
});

Options

import type { ClusterNode, ClusterOptions, RedisOptions } from 'ioredis';

export interface Options {
    // key TTL in seconds (default: 60 * 60 * 24)
    defaultKeyTTL?: number;
    // increment generation to invalidate all key across breaking changes releases (default: 1)
    generation?: number;
    // read timeout in milliseconds (default: 100)
    readTimeout?: number;
    client: `client fron @redis/client`;
}

Logger

Optionally you can pass logger object in the constructor. It should implement standard Console methods.

const redisCache = new deRedisCache(options, logger);