Question 1

What is the difference between debounce and throttle?

Accepted Answer

Debounce delays execution until a burst of events has stopped for a set period. Throttle allows execution at most once per time interval regardless of how many events fire. Use debounce for search inputs; use throttle for scroll handlers.

Question 2

What is rate limiting in JavaScript?

Accepted Answer

Rate limiting restricts how many times a function can execute within a fixed time window. Unlike throttle, it queues or drops calls that exceed the limit, making it useful for API call budgeting.

Question 3

What is a batch execution pattern?

Accepted Answer

Batching accumulates multiple calls within a time window and processes them all at once in a single execution. It reduces the number of expensive operations like network requests or DOM updates.