Throttling

0 lessons

1 code snippet

1 system design

2 community items

throttling

Code Snippets

1 snippet

Code Snippet

Debounce Function in JavaScript

Debouncing collapses a burst of calls into a single trailing invocation, which is the standard fix for noisy events like keystrokes, resize, and scroll. This snippet covers the canonical trailing-edge debounce, a variant with a manual `cancel` for component unmount, and a Promise-returning version that resolves only with the last call's result. Drop it into any UI handler that fires faster than the work it triggers.

JavaScript

utility

code-template

performance-optimization

throttling

615

Easy

System Design

1 article

System Design

Design a Rate Limiter

Design a distributed rate limiter that protects an API platform from abuse and uneven load while staying fast and accurate at 1B requests per day. The interview centerpiece is choosing among the five canonical algorithms (fixed window, sliding window log, sliding window counter, token bucket, leaky bucket) and explaining how to make the chosen one atomic across a Redis cluster. We cover where to place the limiter (edge, gateway, in-process), per-IP vs per-user vs per-API-key keys, returning 429 with Retry-After, the hot key problem, and fail-open vs fail-closed under cache outages.

design-rate-limiter

case-study

ecommerce-marketplace

737

Community

2 items

Code Snippet

Debounce With Leading + Trailing Edges and a cancel() Method

The trailing-only debounce in every tutorial works for search inputs and breaks on click handlers. Here is the lodash-style version with leading edge, cancel(), and flush(), in 30 lines.

915

4.4 (8)

Dec 18, 2025

by @hiroshiward

Article

Debounce, Throttle, and the Difference People Miss

Debounce settles, throttle paces. The visual difference, the canonical implementations of both (with leading-edge and trailing-call variants), and the three edge cases that bite hand-rolled wrappers.

throttling

higher-order-functions

frontend

interview-prep

fundamentals

4.1 (9)

Dec 3, 2025

by @nathanmurphy