You want to customize the cache key for a route in NestJS using CacheInterceptor. Which approach correctly achieves this?

hard📝 Application Q15 of 15

NestJS - Interceptors

AExtend CacheInterceptor and override the <code>trackBy</code> method to return a custom key

BPass a custom key string directly to <code>@UseInterceptors(CacheInterceptor)</code>

CSet a custom key in the controller constructor

DUse <code>@CacheKey('customKey')</code> decorator on the method

Step-by-Step Solution

Solution:

Step 1: Understand how to customize cache keys
CacheInterceptor allows customization by extending it and overriding the trackBy method to define how keys are generated.
Step 2: Evaluate other options
Passing a string to @UseInterceptors() is invalid. Setting keys in constructor or using @CacheKey decorator does not exist in NestJS.
Final Answer:
Extend CacheInterceptor and override the trackBy method to return a custom key -> Option A
Quick Check:
Override trackBy method = D [OK]

Quick Trick: Override trackBy method in extended CacheInterceptor [OK]

Common Mistakes:

Master "Interceptors" in NestJS

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More NestJS Quizzes