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express-rate-limit avatar

express-rate-limit/express-rate-limit

0
View on GitHub↗
3,265 stars·250 forks·TypeScript·18 viewsnpmjs.com/package/express-rate-limit↗

Express Rate Limit

This project is a middleware for the Express web framework designed to restrict request frequency and protect server capacity. It functions as a traffic throttler that intercepts incoming requests to evaluate and enforce limits based on client identity within defined time windows.

The system distinguishes itself through a pluggable data store pattern that allows for distributed rate limiting. By delegating hit count storage to external databases, it ensures consistent request tracking across multiple server instances and maintains state across process restarts.

The library provides comprehensive traffic management by monitoring client usage and communicating quota status through standard HTTP response headers. This feedback mechanism informs API consumers about their current request capacity and reset times, while the underlying logic prevents service abuse and resource exhaustion.

Features

  • Middleware Rate Limiters - Provides middleware for the Express web framework that restricts request frequency to prevent service abuse and protect server capacity.
  • API Throttling - Limits the number of requests a client can make to the server to prevent abuse and protect infrastructure capacity.
  • Distributed Rate Limiting - Synchronizes request counts across multiple server instances using external data stores to ensure consistent traffic control.
  • Request Rate Limiting - Restricts request frequency by capping the number of requests a client can make within a defined time window.
  • Request Interception Middlewares - Intercepts incoming HTTP requests before they reach route handlers to evaluate and enforce traffic constraints based on client identity.
  • Storage Adapters - Uses an abstract interface to delegate hit count storage to either local memory or external databases for distributed state management.
  • Quota Status Headers - Communicates current request quota, remaining capacity, and reset times to clients via standard HTTP response headers.
  • Service Abuse Protections - Secures applications against automated attacks and resource exhaustion by restricting request frequency from individual users or IP addresses.
  • Asynchronous State Synchronizations - Ensures consistent request tracking across multiple server instances by synchronizing state with external storage backends.
  • Rate Limiting - Reports rate limit status to clients by including usage, quota, and reset time information in standard HTTP response headers.
  • Time-Windowed Limits - Tracks request frequency within defined time intervals to calculate usage and determine whether to allow or reject incoming traffic.
  • API Request Quota Monitors - Tracks and reports remaining API request limits to clients to help them manage their traffic volume.
  • Traffic Throttlers - Controls request volume in Node.js applications by enforcing limits on client activity within defined time windows.

Star history

Star history chart for express-rate-limit/express-rate-limitStar history chart for express-rate-limit/express-rate-limit

How this analysis was created: This summary and feature list are AI-generated from collected project material and can contain mistakes. Stars, license and language are imported from GitHub. Inclusion does not mean that we have tested or audited this project. Check the source documentation for any feature you depend on. Learn more on our About page.

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Projects sharing features with Express Rate Limit

These projects share indexed features with Express Rate Limit. Shared tags can include platform or build tooling; verify the primary use case before treating a result as a replacement.
  • rack/rack-attackrack avatar

    rack/rack-attack

    5,746View on GitHub↗

    Rack-attack is a middleware rate limiter and request filter for the Rack interface. It provides a system for throttling HTTP requests and maintaining IP address blocklists to protect applications from malicious traffic and denial-of-service attacks. The project enables application layer DDoS mitigation and API rate limit management by identifying and rejecting requests from banned clients or abusive IP addresses. It allows for the definition of safelists to bypass filters and uses custom logic to determine if a client should be blocked or throttled. The tool covers comprehensive traffic mana

    Rubyrackrack-attackrack-middleware
    View on GitHub↗5,746
  • kickstarter/rack-attackkickstarter avatar

    kickstarter/rack-attack

    5,744View on GitHub↗

    This project is a Rack middleware rate limiter and application layer firewall for Ruby web applications. It serves as a security layer to throttle and block HTTP requests based on custom rules, protecting web servers from abusive traffic. The system provides capabilities for IP blocking and the banning of malicious clients. It implements request safelisting to bypass restrictions for trusted users and uses time-windowed rate limiting to control request frequency. The middleware covers traffic management and monitoring, including the ability to track request patterns and instrument traffic ev

    Ruby
    View on GitHub↗5,744
  • jhurliman/node-rate-limiterjhurliman avatar

    jhurliman/node-rate-limiter

    1,561View on GitHub↗

    Node-rate-limiter is a utility library for Node.js designed to throttle both incoming and outgoing traffic using configurable time intervals and token bucket limits. It protects server capacity and backend APIs by capping the number of requests an individual client can make within a specified time window, while also controlling the frequency of outbound API calls and web crawling tasks to avoid triggering remote rate limit violations. The library implements a token-bucket rate limiting algorithm with continuous replenishment, allowing administrators to configure specific burst and drip rates.

    TypeScript
    View on GitHub↗1,561
  • alibaba/higressalibaba avatar

    alibaba/higress

    7,558View on GitHub↗

    Higress is an AI API gateway and cloud-native traffic manager that functions as a Kubernetes ingress controller. It provides a centralized system for routing, securing, and optimizing traffic directed toward large language models, AI agents, and microservice architectures. The project distinguishes itself through deep AI orchestration, including the ability to host and manage Model Context Protocol servers that transform REST APIs into tools for AI agents. It features specialized AI infrastructure for model request proxying, protocol translation across multiple providers, and semantic-based c

    Goai-gatewayai-nativeapi-gateway
    View on GitHub↗7,558
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Frequently asked questions

What does express-rate-limit/express-rate-limit do?

This project is a middleware for the Express web framework designed to restrict request frequency and protect server capacity. It functions as a traffic throttler that intercepts incoming requests to evaluate and enforce limits based on client identity within defined time windows.

What are the main features of express-rate-limit/express-rate-limit?

The main features of express-rate-limit/express-rate-limit are: Middleware Rate Limiters, API Throttling, Distributed Rate Limiting, Request Rate Limiting, Request Interception Middlewares, Storage Adapters, Quota Status Headers, Service Abuse Protections.

Which projects share features with express-rate-limit/express-rate-limit?

Projects with overlapping indexed features include: rack/rack-attack — Rack-attack is a middleware rate limiter and request filter for the Rack interface. It provides a system for… kickstarter/rack-attack — This project is a Rack middleware rate limiter and application layer firewall for Ruby web applications. It serves as… jhurliman/node-rate-limiter — Node-rate-limiter is a utility library for Node.js designed to throttle both incoming and outgoing traffic using… alibaba/higress — Higress is an AI API gateway and cloud-native traffic manager that functions as a Kubernetes ingress controller. It… grpc-ecosystem/go-grpc-middleware — go-grpc-middleware is a gRPC middleware framework for Go designed to handle cross-cutting concerns, reliability, and… throttled/throttled — Throttled is a Go library and middleware package for enforcing rate quotas and request thresholds on HTTP endpoints.…

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