Implementing Rate Limiting in Spring Boot with Bucket4j

As web applications grow and handle more traffic, ensuring their reliability and performance becomes crucial. One effective way to achieve this is by implementing rate limiting, which controls the number of requests a client can make to your application in a given period. This prevents abuse, protects resources, and ensures fair usage among clients. In this article, we’ll explore how to implement rate limiting in a Spring Boot application using Bucket4j.

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What is Rate Limiting?

Rate limiting is a strategy used to control the amount of incoming traffic to a web service. It restricts the number of requests a client can make within a specified timeframe, thereby preventing abuse, reducing server load, and maintaining quality of service.

Setting Up the Project

Create a new Spring Boot project using Spring Initializr with the following dependencies:

• Spring Web
• Bucket4j (via the JCenter or Maven Central repository)

Adding Dependencies