Microservice API Gateways

As microservices are typically fine-grained, any large-scale application has to consist of many microservices. With hundreds of microservices in an IT environment, the IT complexity is bound to escalate. The operational, monitoring, measurement, and management complexities of microservices are definitely greater, and hence the idea of leveraging API gateways originated and has flourished for not only mitigating rising complexity, but also for abstracting away all kinds of common capabilities from microservice source code. In this best practices chapter, we explain the role and responsibility of API gateways in the microservice era. Further on, you can also see how the reliability of microservice applications is ensured through the smart leveraging of an API gateway infrastructure.