Circuit Breaker Pattern in Microservices
<p>Microservices architecture has become the new norm for large-scale applications. Because it has more advantages compared to traditional monolithic architecture. However, microservices also come with several challenges. One such challenge is preventing cascading failures. For example, network or service failure in one microservice can quickly cascade into other services and cause a system-wide failure.</p>
<p>So, in this article, I will discuss how to overcome this issue by using the circuit breaker pattern in microservices.</p>
<h1>Why We Need Circuit Breaker Pattern?</h1>
<p>In a microservices architecture, services have to communicate with each other. Sometimes, there can be service failures, or it takes significant time to respond to requests due to network connectivity issues.</p>
<p>For example, assume that there are 2 microservices named <strong>user</strong> and <strong>article</strong>. When the <strong>user service</strong> needs to communicate with the article service, it creates a new thread and sends a request to the <strong>article service</strong>. However, if there are any network issues or timeout failures from the <strong>article service</strong>, the <strong>user service</strong> will not get an instant response. Also, there is no way to inform the <strong>user service</strong> about the failure so it will wait for a response. As a result, the <strong>user service</strong> will send continuous requests to the <strong>article service</strong> until its resources are exhausted, resulting in user service failure.</p>
<p><a href="https://blog.bitsrc.io/circuit-breaker-pattern-in-microservices-26bf6e5b21ff">Click Here</a></p>