CacheModule setup in NestJS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import CacheModule in a NestJS module.

NestJS

import { Module, [1] } from '@nestjs/common';
import { CacheModule } from '@nestjs/cache-manager';

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

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

ACacheModule

BInjectable

CController

DModule

Attempts:

3 left

💡 Hint

Common Mistakes

Importing CacheModule instead of Module

Forgetting to import any decorator

Importing Injectable or Controller by mistake

The Module decorator is imported from @nestjs/common to define a NestJS module.

2fill in blank

medium

Complete the code to register CacheModule with a TTL of 5 seconds.

NestJS

CacheModule.register({ ttl: [1] })

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

A5

B5000

C60

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using milliseconds instead of seconds

Setting TTL to 0 which disables caching

Using a very large number unintentionally

The ttl option expects seconds, so 5 means cache expires after 5 seconds.

3fill in blank

hard

Fix the error in the CacheModule import statement.

NestJS

import { CacheModule } from '[1]';

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

A@nestjs/common

Bcache-manager

C@nestjs/cache-manager

D@nestjs/cache

Attempts:

3 left

💡 Hint

Common Mistakes

Importing from @nestjs/common

Importing from a non-existent package

Using 'cache-manager' directly

The correct package to import CacheModule from is @nestjs/cache-manager.

4fill in blank

hard

Fill both blanks to configure CacheModule with a max cache size of 100 and TTL of 10 seconds.

NestJS

CacheModule.register({ ttl: [1], max: [2] })

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

A10

B100

C5

D50

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up TTL and max values

Using too large or zero values

Omitting one of the options

TTL is set to 10 seconds and max cache size is set to 100 items.

5fill in blank

hard

Fill all three blanks to import CacheModule, register it with TTL 20, and export it from the module.

NestJS

import { Module, [1] } from '@nestjs/common';
import { CacheModule } from '[2]';

@Module({
  imports: [CacheModule.register({ ttl: [3] })],
  exports: [CacheModule],
})
export class CacheConfigModule {}

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

AModule

B@nestjs/cache-manager

C20

DInjectable

Attempts:

3 left

💡 Hint

Common Mistakes

Importing wrong decorators

Wrong package for CacheModule

Setting TTL to string instead of number

You import Module decorator, import CacheModule from @nestjs/cache-manager, and set TTL to 20 seconds.