Prior to Microservices architecture, Monolithic architecture was in practice in which all the software components are grouped together into a single package (code for different features remains on the same server). Microservice architecture is a design pattern for Service-Oriented Architecture (SOA) in which the application is divided into small components and each component is developed and deployed independently, each service is autonomous and implements a single business function.

Major Features:

• As a Component –
  • Microservice is treated as independent components which can be deployed independently.
• Coupling –
  • All microservices are loosely coupled with one another which ensures that changes done in one do not affect other microservices.
• Troubleshooting –
  • With microservice troubleshooting, the fault becomes easy as only the affected microservice will go down and the rest will continue to function.
• Autonomous –
  • As microservices are treated autonomy and independent so different development team can work independently.
• Focused –
  • Each microservice is developed to deliver only one business task.

Challenges:

• Distributed System –
  • Different technologies will be used to develop microservices which increases complexity.
• Monitoring –
  • It will have more services to monitor in comparison to Monolithic architecture.
• Costly –
  • Microservice Architecture is costly as different servers need to be maintained for different services.