Suppose you have implemented an application based on a microservices architecture. In a microservices-based application, you’ll typically have a conglomeration of several services. One of the significant benefits of microservices architecture is that each service is built, deployed, and maintained independently, promoting high scalability.
But let’s say something goes wrong. How would you identify, by looking at the logs, where the request failed? Your log files might include hundreds of thousands or perhaps millions of log messages. Hence searching through the log entries would be a daunting task. This is where correlation IDs come to the rescue.
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