Cache stores (memory, Redis) in NestJS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the CacheModule in a NestJS module.

NestJS

import { CacheModule } from '@nestjs/cache-manager';

@Module({
  imports: [CacheModule.[1]()],
})
export class AppModule {}

Drag options to blanks, or click blank then click option'

Asetup

Bconfigure

Cregister

Dinit

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'configure' or 'init' instead of 'register' causes errors.

Forgetting to import CacheModule before using it.

Use CacheModule.register() to set up the cache module with default options.

2fill in blank

medium

Complete the code to set up Redis as the cache store in NestJS.

NestJS

CacheModule.register({
  store: [1],
  host: 'localhost',
  port: 6379,
}),

Drag options to blanks, or click blank then click option'

A'memory-store'

B'redis'

CmemoryStore

DredisStore

Attempts:

3 left

💡 Hint

Common Mistakes

Using string 'redis' instead of the imported redisStore function.

Confusing memory store with Redis store.

Use redisStore imported from cache-manager-redis-store as the Redis cache store.

3fill in blank

hard

Fix the error in the code to inject Cache correctly in a NestJS service.

NestJS

constructor(private readonly cache: [1]) {}

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ACache

BCacheManager

DCacheService

Attempts:

3 left

💡 Hint

Common Mistakes

Using CacheManager or CacheService instead of Cache causes injection errors.

Not marking the constructor parameter as private readonly.

The correct injection type is Cache to access cache methods.

4fill in blank

hard

Fill both blanks to create a cache key with a prefix and set a TTL of 5 minutes.

NestJS

await this.cache.[1]('user:123', userData, { ttl: [2] });

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Aset

Bget

C300

D60

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'get' instead of 'set' to store data.

Setting TTL to 60 seconds instead of 300.

Use set to store data with a TTL of 300 seconds (5 minutes).

5fill in blank

hard

Fill all three blanks to configure CacheModule with Redis store, host, and port.

NestJS

CacheModule.register({
  store: [1],
  host: [2],
  port: [3],
}),

Drag options to blanks, or click blank then click option'

AredisStore

B'localhost'

C6379

D'memory-store'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'memory-store' instead of redisStore.

Using port as a string instead of number.

Forgetting quotes around 'localhost'.

Use redisStore for Redis, host as 'localhost', and port 6379.