Microservices Tutorial for Beginners | All You Need to Get Started
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The document outlines a microservices online training program led by Shailendra Chauhan, covering essential topics such as microservices principles, architecture, advantages, challenges, and design patterns. It emphasizes the independence of microservices, their ability to be deployed separately, and the complexities involved in managing them, including data integrity and versioning. The training also includes practical tools and strategies for implementing microservices effectively.
Microservices Tutorial for Beginners | All You Need to Get Started
- 1. For Microservices Online Training : +91-999 123 502 Introduction to Microservices Shailendra Chauhan Microsoft MVP, Technical Consultant and Corporate Trainer
- 2. For Microservices Online Training : +91-999 123 502 • Introduction to Microservices • Microservices Principles • Monolithic vs. N-Layer vs. SOA vs. Microservices • Microservices Architecture • When to use Microservices Architecture • Challenges of Microservices • Tools/Platform For Building Microservices • Microservices API Gateways • Design Patterns for Microservices Agenda
- 3. For Microservices Online Training : +91-999 123 502 • Microservice is a small unit that has only one responsibility or single logic which solve a specific problem. • Microservices are the evolution of service-oriented architecture. • Microservices are small and independent services that work together. • A style of engineering to build highly automated, independent and evolving software. • Each Microservice can be deployed independently. • A Microservice itself persist its own data or external state. • All services don't need to share the same technology stack, libraries, or frameworks. Introduction to Microservices
- 4. For Microservices Online Training : +91-999 123 502 Microservices Principles
- 5. For Microservices Online Training : +91-999 123 502 • Modelled around business domain : Separate system capability into different domains and each domain will focus on one thing and its associated logic. • Culture of Automation : Follow the culture of automation by designing it for continues integration and continuous delivery. • Hide implementation details : Hiding the internal details reduce the coupling and helps to do changes and improvement without affecting the overall architecture. • Decentralization : There is no centralized database, usually each service is designed to manage its own database. Microservices Principles Contd..
- 6. For Microservices Online Training : +91-999 123 502 • Deploy Independently : Each service can be deployed independently. • Failure Isolation : The impact of a failure is less in microservice architecture compares to monolithic type as it will only affect that particular service and its associates. Other services can keep running. • Highly Observable : The services should collect as much information to analyze what is happening within each of them like log events and stats. Microservices Principles Contd..
- 7. For Microservices Online Training : +91-999 123 502 Monolithic vs. N-Layer vs. SOA vs. Microservices Monolithic: Single Unit Multi Units: N-Layer/SOA Smaller Units: Microservices
- 8. For Microservices Online Training : +91-999 123 502 Microservices Architecture Client API Gateway Service 1 Service 2 Service n Microservices
- 9. For Microservices Online Training : +91-999 123 502 • Large applications that require a high release velocity. • Complex applications that need to be highly scalable. • Applications with rich domains or many subdomains. • An organization that consists of small development teams. When to use Microservices Architecture
- 10. For Microservices Online Training : +91-999 123 502 • Language independent and framework independent. • Independently develop, deploy, redeploy, version and scale component services in seconds without compromising the integrity of an application • Better fault isolation keeps other services to work even on failure. • Zero downtime upgrades. • Services can be of from different servers or even from different datacenters. • Reliable and self-healing. • Supports continuous integration and delivery. • Easy to integrate with third parties. Advantages of Microservices
- 11. For Microservices Online Training : +91-999 123 502 • Complexity - A microservices application is more complex as compared to the equivalent monolithic application. • Development and testing - Building and testing a service that relies on other services need domains understanding and refactoring them can be difficult. • Lack of governance - The decentralized approach to building microservices has advantages, but it also lead to so many problems like maintenance because of many different languages and frameworks. • Network congestion and latency - The use of many small, services can result into additional latency because of interservice communication and a long chain of service dependencies. So design APIs carefully and use asynchronous communication patterns. Challenges of Microservices
- 12. For Microservices Online Training : +91-999 123 502 • Data Integrity - Each microservice is responsible for its own data persistence. As a result, data consistency can be a challenge. • Management - To be successful with microservices requires a mature DevOps culture. Correlated logging across services can be challenging for a single user operation. • Versioning - Be careful while updating a service. It must not break services that depend on it. So without careful design, you might have problems with backward or forward compatibility. • Skillset - Microservices are highly distributed systems. So need a skilled and experience team to implement it. Challenges of Microservices Contd..
- 13. For Microservices Online Training : +91-999 123 502 Tools/IDE: Getting started with Microservices
- 14. For Microservices Online Training : +91-999 123 502 Development Frameworks
- 15. For Microservices Online Training : +91-999 123 502 Development Tools www.visualstudio.microsoft.com/ Visual Studio VS Code www.code.visualstudio.com/ Docker www.code.docker.com/
- 16. For Microservices Online Training : +91-999 123 502 Microservices API Gateways Azure API Management Ocelot API Gateway Traefik (traffic)
- 17. For Microservices Online Training : +91-999 123 502 Design Patterns for Microservices Decomposition Patterns • Decompose by Business Capability • Decompose by Subdomain • Strangler Pattern Integration Patterns • API Gateway Pattern • Aggregator Pattern • Client-Side UI Composition Pattern Database Patterns • Database per Service • Shared Database per Service • CQRS Pattern • Saga Pattern Communication Patterns • Request/Response Pattern • Messaging Pattern • Event Driven Pattern Deployment Patterns • Multiple Service Instances per Host • Service Instance per Host • Serverless Deployment • Service Deployment Platform
- 18. For Microservices Online Training : +91-999 123 502 Design Patterns for Microservices Observability Patterns • Log Aggregation • Performance Metrics • Distributed Tracing • Health Check Cross-Cutting Concern Patterns • Externalized Configuration • Service Discovery Pattern • Circuit Breaker Pattern