Microservices: Difference between revisions

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=<span id='Discovery'></span>Service Discovery=
=<span id='Discovery'></span>Service Discovery=
Service discovery is letting microservices know about each other in a dynamic environment.
Service discovery is letting microservices know about each other in a dynamic environment. Service discovery addresses discovering the instances of a particular service, adding and removing service instances and handling the situation when a service instance becomes unresponsive.


=Synchronous Communication=
=Synchronous Communication=

Revision as of 22:41, 28 September 2023

Internal

Learning

Microservices Learning

Overview

An application based on microservices is composed of small, highly decoupled, mostly autonomous components, that are built to offer a specific (mostly business) functionality. A cloud-native application is composed of multiple microservices that communicated through shared infrastructure, in most cases over HTTP/REST. The microservices architecture provides two major advantages: various components can be developed, deployed, monitored, and troubleshot independently, on a service-by-service basis, rather than dealing with the entire application. The second advantage is that a specific layer can be scaled independently by other layers. The underlying infrastructure can also be provisioned and changed independently and faster.

James Lewis and Martin Fowler definition: Microservice architectural style is an approach to developing a single application as a suite of small services, each running in its own process and communicating with lightweight mechanisms, often an HTTP resource API.

Use Cases

A situation when we may benefit from splitting an application into separate services is when:

  • Logic is loosely coupled
  • Data models are different
  • Data is generally independent

Service Discovery

Service discovery is letting microservices know about each other in a dynamic environment. Service discovery addresses discovering the instances of a particular service, adding and removing service instances and handling the situation when a service instance becomes unresponsive.

Synchronous Communication

Asynchronous Communication

Data Storage

Deployment

Unit and Integration Testing

Observability

Observability