@nest-boot/redis

RedisModule provides the shared ioredis client. When HealthCheckModule is imported in the same application, it automatically registers a redis indicator:

import { HealthCheckModule } from "@nest-boot/health-check";
import { RedisModule } from "@nest-boot/redis";
import { Module } from "@nestjs/common";

@Module({ imports: [HealthCheckModule, RedisModule] })
export class AppModule {}

The check uses the existing client, requires it to be ready, and expects PING to return PONG within 1000 ms. Connection errors, unexpected replies, and timeouts report down; the next health request checks again and can report recovery. Reconnecting or lazily disconnected clients report down without queueing more commands. Timeout does not close or reconfigure the application's connection. If a timed-out PING is still pending, later probes share that command until it settles, so repeated health requests cannot accumulate PING commands.

Without HealthCheckModule, no check is registered or run. RedisModule does not import it or create a health endpoint. The exported RedisHealthIndicator can also be injected for explicit checks with pingCheck(key, timeout).