I'm curious about the best practices for microservices communication. Given that there might be scenarios where they shouldn't be communicating at all, I'm exploring options between gRPC and REST. However, I'm also re-evaluating my architecture to possibly eliminate the need for communication entirely. What are everyone's thoughts on how and when it's necessary for microservices to interact?
3 Answers
Microservices typically communicate either through synchronous calls, like HTTP APIs, or asynchronously using event-driven systems such as message brokers or queues. Choosing between these methods mainly depends on your use case.
In my experience, excessive inter-service communication can indicate that your service boundaries are poorly defined. If communication is necessary, I recommend preferring asynchronous communication to reduce coupling and avoid cascading failures.
It really depends on what you're trying to achieve. If you're interacting with users in real-time, go for synchronous options like REST or gRPC. For background processing or tasks that don't have to be immediate, asynchronous methods like message queues work much better.
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