An Improved Token Bucket Algorithm for Service Gateway Traffic Limiting

Abstract

In the Spring Cloud micro-service system, the gateway Zuul, as the entrance to all internal services, must carry out the traffic limiting operation to guarantee the stability of the service in the case of high concurrency. The traditional token bucket traffic shaping algorithm cannot guarantee the stability of core services. In order to solve this problem, this paper designed an overload protection strategy based on URI configuration file in combination with gateway Zuul, which can filter the request before acquiring the tokens. It improved the token bucket algorithm, realized the traffic limiting function and guaranteed the stability and immediacy of the core service process.