Bottleneck
A lightweight, zero-dependency task scheduler and rate limiter for Node.js and browsers, with Redis-based clustering support.
What is Bottleneck?
Bottleneck is a lightweight, zero-dependency library for rate limiting and scheduling asynchronous tasks in Node.js and browser environments. It solves the problem of controlling the flow of jobs—such as API calls or database operations—to prevent exceeding rate limits, manage resource contention, and ensure application stability under load. It provides fine-grained control over concurrency, timing, and prioritization with support for distributed clustering via Redis.
Developers building Node.js applications or browser-based tools that interact with rate-limited APIs, manage concurrent background jobs, or need to throttle operations to avoid overwhelming external services or internal resources.
Developers choose Bottleneck for its simplicity, reliability, and comprehensive feature set—including clustering, priority queues, and batching—without adding heavy dependencies. Its battle-tested design and Redis-backed distributed rate limiting make it a production-ready solution for scalable applications.
Overview
Job scheduler and rate limiter, supports Clustering
Use Cases
Best For
- Throttling API requests to avoid hitting third-party rate limits
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