RateLimitJ

A Java library for rate limiting, assembled using extensible storage and application framework adaptors. The library's interfaces support thread-safe sync, async, and reactive usage patterns.

Modules

RateLimitJ is currently provides the following plugable modules:

• Redis sliding window rate limiter
• Dropwizard integration
• Hazelcast sliding window rate limiter (in development)

Features

• Uses an efficient sliding window algorithm for rate limiting
• Multiple limit rules per instance

Binaries/Download

Binaries and dependency information for Maven, Ivy, Gradle and others can be found at Maven Central.

Example for Maven:

<dependency>
  <groupId>es.moki.ratelimitj</groupId>
  <artifactId>ratelimitj-redis</artifactId>
  <version>${ratelimitj-redis.version}</version>
</dependency>

Prerequisite

• RateLimitJ requires Java 8

Roadmap

Feature	Status
Redis sliding window rate limiter	Release
Dropwizard integration - Bundle	Release
Hazelcast sliding window rate limiter	Development
In-memory sliding window rate limiter	Development
Whitelisting & blacklisting of keys	not started
Spring integration	not started

Credits

This library was inspired by the following articles on sliding window rate limiting with Redis:

• Introduction to Rate Limiting with Redis Part 1
• Introduction to Rate Limiting with Redis Part 2

Authors

• Craig Baker