What are Microservices?

Microservices is an architectural style for developing a software application that runs as individual services which communicate with each other through the following ways

1. Synchronous communication using API calls
2. Asynchronous communication through Publish and Subscribe/event-based mechanism — i.e using Message Queues

These microservices possess the following properties

• Independently deployable
• Highly scalable to loads
• Can be developed using multiple programming languages — i.e polyglot
• Loosely coupled
• Organized around the business domain
• Owned by small and self-contained teams
• Highly maintainable and testable
• Continuous Delivery through automated CICD pipelines and faster time to market
• Resiliency from failures

Monolithic vs Micro services differences

Microservices Architecture:

1. Overview:
   • Definition: Microservices architecture is an architectural style that structures an application as a collection of loosely coupled services, each representing a specific business capability.
   • Focus: It emphasizes breaking down applications into small, independently deployable services that can be developed, deployed, and scaled independently.
2. Service-Oriented:
   • Services Independence: Each microservice is a self-contained unit that can be developed, deployed, and scaled independently. It often has its own database.
3. Decentralization:
   • Decision-Making: Each microservice team has a high degree of autonomy, enabling them to choose the technologies and tools that best suit their specific service.
4. Scalability and Agility:
   • Scalability: Enables scaling individual services based on their specific demands.
   • Agility: Promotes rapid development, deployment, and iteration of services.
5. Resilience and Fault Isolation:
   • Fault Isolation: Failures in one microservice do not necessarily affect the entire application, enhancing resilience.