Beginner
Web & Software Development
Q21 / 100
What is caching in web development?
Correct! Well done.
Incorrect.
The correct answer is B) Storing copies of expensive responses or computations to serve future requests faster, reducing latency and database/server load
B
Correct Answer
Storing copies of expensive responses or computations to serve future requests faster, reducing latency and database/server load
Explanation
Caching layers: browser cache (HTTP headers), CDN cache (edge servers), application cache (Redis, Memcached), database query cache. Cache invalidation ("two hard things in CS") is the key challenge.
Progress
21/100