Circuit Breaker Pattern in Handling Business Issues on the Allegro Platform

In a recent article on the Allegro tech blog, the author discusses the Circuit Breaker design pattern, which is commonly used in microservices architecture to prevent failed connections. This pattern allows for monitoring the number of errors occurring during service calls, and when this number exceeds a certain threshold, the Circuit Breaker 'opens' to stop further calls to a possibly unavailable service. The goal of this process is to protect other teams and system resources from being overwhelmed. The article also explores various use cases for Circuit Breaker, highlighting that it is not limited only to HTTP calls. It's important to note that effective implementation of Circuit Breaker requires monitoring and appropriate recovery strategies, such as automatically retrying connections at set intervals. Moreover, the article includes examples and code snippets that may be beneficial for developers looking to integrate this pattern in their projects, especially when combining different services and microservices.