Definition: Microservices are a method of software development where an application is composed of small, independent services that communicate over a network.
Importance: Understanding microservices is crucial for modern software development, especially for job applications.
Course Overview
Objective: Introduce microservices architecture with a real-world project.
Project Focus: Build multiple small APIs and demonstrate how they communicate.
Course Structure
APIs to build:
Authentication API using .NET Identity.
E-commerce application example with various features mentioned.
Benefits of Microservices
Independently Deployed: Each service can be deployed independently, reducing risks during updates.
Scalability: Services can be scaled independently to meet demand.
Fewer Dependencies: Independent services allow for faster debugging.
Example Architecture of Microservices:
APIs illustrated include:
Product API
Coupon API
Shopping Cart API
Practical Work
Setting up the Dev Environment:
Tools: Visual Studio, SQL Server, and Azure subscriptions for cloud services.
Essential Packages:
Entity Framework for database connectivity.
AutoMapper for object mapping between DTOs and models.
Working Samples
Demonstration of APIs including login actions, token generation for authorization, and CRUD operations on product and coupon.
Communication between Microservices
Use of asynchronous message processing (Service Bus) to decouple services and manage scale.
Asynchronous Event Driven Architecture (e.g., using Azure Service Bus) discussed.
Email Service Integration
Sending emails asynchronously from microservices using message brokers for notifications.
Conclusion
Key Takeaway: Structure and independence of microservices contribute significantly to maintainable code and faster deployment cycles.
Next Steps
Explore Advanced Concepts:
Distributed transactions, resilience patterns, API Gateways, and service discovery.
Key Features of Microservices Implementation in Course
Use of Docker and framework integration in the development lifecycle.
Introduction to message brokers like RabbitMQ as alternatives to Azure Service Bus.
Deployment strategies and management for a microservices architecture.