Dropwizard Tokenbucket

Add rate limiting to Dropwizard using token buckets. The buckets are stored in memory using a Guava LoadingCache.

This project uses bucket4j and Hazelcast.

How to use

In your Dropwizard initialize method add the following:

@Override
public void initialize(Bootstrap<Configuration> bootstrap) {
    CacheBuilderSpec cacheBuilderSpec = new CacheBuilderSpec.parse("expireAfterWrite=1m")
    long overdraft = 50L;
    Refill refill = Refill.smooth(10, Duration.ofSeconds(5));

	RateLimitProvider rateLimitProvider = new TokenBucketRateLimitProvider(
	        cacheBuilderSpec, overdraft, refill);

	bootstrap.addBundle(new RateLimitBundle(rateLimitProvider));
}

Finally, add the following annotation to your rate limited routes:

@GET
@Path("index")
@RateLimited(cost = 1)
Response getIndex() {
	// etc.
}

Copyright and License

Adapted from ZIVVER B.V.'s dropwizard-ratelimit

Licensed under Apache 2.0