redissson RRateLimiter

Ratelimiting, in the context of Redisson, is a feature that allows you to control the rate at which certain operations can be executed or accessed within your Redis-based system. Redisson RRateLimiter is a Java implementation of rate limiting using Redis as the underlying storage. It provides a mechanism to enforce limits on the number of requests per unit time (e.g., per second) for a specific resource.

With Redisson RRateLimiter, you can set up rules like "only allow 50 requests per minute from a particular IP address" or "throttle API calls to prevent abuse." It uses Redis keys and timeouts to manage the tokens representing permission to perform an action, once the limit is reached, subsequent requests will be blocked until more tokens become available through the expiration of existing ones.

Here's how it works in practice:

1. Create a rate limiter instance with a given configuration (limit, timeout, and other settings).
2. Acquire a token from the rate limiter before executing the critical operation.
3. If the token is granted (i.e., there are enough remaining permissions), execute the operation; otherwise, the request is blocked for the specified timeout.
4. After the operation, release any consumed tokens if needed.