# Caching — NestJS

Source: https://www.geekswithgeeks.com/en/nestjs/nestjs-caching

> Improve performance with in-memory or Redis caching.

## Cache decorator

Use `@Cacheable()` or `@Cache()` to automatically cache method results.

```typescript
import { Cacheable } from '@nestjs/cache-manager';

@Cacheable({ ttl: 300 }) // cache for 5 minutes
findAll() {
  return this.usersService.findAll();
}
```

## Redis cache

Switch from in-memory to Redis by configuring the cache store.

```typescript
import { CacheModule } from '@nestjs/cache-manager';
import type { RedisClientOptions } from 'redis';

CacheModule.register<RedisClientOptions>({
  isGlobal: true,
  store: 'redis',
  host: 'localhost',
  port: 6379
})
```