When to react and when not to react (orchestrate)

Now, we are at a stage where we are well acquainted with the core concepts of microservices. The next question that we often interact with is regarding the implementation of microservices, and how they will interact with each other. The most common question is when to use orchestration, when to react, and is it possible to use a hybrid approach. In this section, we will understand each of the approaches, its pros and cons, and look at practical examples for the use of each approach. Let's start with orchestration.

Orchestration

Orchestration is more of a Service Oriented Architecture (SOA) approach where we handle interaction between various services in an SOA. When we say orchestration, we maintain one controller that is the orchestrator or the main coordinator of all the service interactions. This typically follows more of a request/response-type pattern where a mode of communication can be anything. For example, we can have one orchestrator...