[Solved] Identify the error in this NestJS CacheInterceptor usage: import { Controller, Get, UseInterceptors } from '@nestjs/common'; import { CacheInterceptor } from '@nestjs/cache-manager';... | NestJS

NestJS - Interceptors

Identify the error in this NestJS CacheInterceptor usage:

import { Controller, Get, UseInterceptors } from '@nestjs/common';
import { CacheInterceptor } from '@nestjs/cache-manager';

@Controller()
export class TestController {
  @UseInterceptors(CacheInterceptor())
  @Get('test')
  test() {
    return 'Test response';
  }
}

ACacheInterceptor should not be called as a function

BMissing CacheModule import in the controller

CMethod test must be async to use CacheInterceptor

DCacheInterceptor must be applied globally, not per method

Step-by-Step Solution

Solution:

Step 1: Check how CacheInterceptor is applied
CacheInterceptor is a class, not a function, so it should be passed without parentheses to @UseInterceptors().
Step 2: Verify other options
CacheModule import is required but not shown here (not an error in this snippet). Method does not need to be async. CacheInterceptor can be applied per method.
Final Answer:
CacheInterceptor should not be called as a function -> Option A
Quick Check:
Use class name without () = A [OK]

Quick Trick: Pass CacheInterceptor class, not call it as function [OK]

Common Mistakes:

Calling CacheInterceptor with parentheses
Assuming method must be async
Thinking CacheModule import error here

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Identify the error in this NestJS CacheInterceptor usage:

Step 1: Check how CacheInterceptor is applied

Step 2: Verify other options

Final Answer:

Quick Check:

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