Building Microservices with .NET (speaker Anton Vasilenko, Binary Studio)
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The document discusses building microservices with .NET, outlining key definitions, comparisons with other architectures, and essential aspects such as service orientation, security, logging, and deployment strategies. It emphasizes the importance of understanding when to split a monolith into microservices, best practices for integration, and the significance of robust testing and security measures. Additionally, it provides insights on scaling and the challenges of deploying microservices effectively, highlighting the trade-offs between monolithic and microservices architectures.
Building Microservices with .NET (speaker Anton Vasilenko, Binary Studio)
- 2. Vasilenko Anton .Net Team Leader @ Binary Studio
- 3. Contents 1. Definitions 2. Comparison with alternatives 3.Key aspects in details In theory In the real .Net solution
- 4. “Microservices are ... … small, autonomous services that work together. Sam Newman
- 5. “There are two hard things in computer science: cache invalidation, naming things, and off-by-one errors.” “Any fool can write code that a computer can understand. Good programmers write code that humans can understand.” Martin Fowler
- 6. “Microservices ... ● application - a suite of small services ○ each in own process ○ communicating i.e. via HTTP ● built around business capabilities ● auto-deployed independently by CI & CD ● minimal centralized management ● different languages possible ● different data storages possible
- 7. Service Oriented Architecture “A loosely-coupled architecture designed to meet the business needs of the organization.” A software design based on discrete software components, “services”, that collectively provide the functionalities of the larger software architecture. SOA is an architectural style that supports service-orientation. Service-orientation is a way of thinking in terms of services and service-based development and the outcomes of services.
- 8. SOA vs Microservices SOA Microservices Very broad term, almost meaningless
- 9. Monolith architecture “All architectural layers and all functionality in one single application.” Simple to: ● Develop ● Deploy ● Test … until it starts growing https://youtu.be/wgdBVIX9ifA?t=1089
- 10. Let’s dive into details
- 11. In theory ✘ Separate projects ✘ Identify seams ✘ Isolate wisely changing parts team-wise extra security, monitoring Key points: Splitting the Monolith In our project ✘ Logical split ✘ With scalability in mind ✘ Isolate external services ✘ several DBs
- 12. Key points: Splitting the Monolith Summary ✘ Do you really need to split? ✘ Document API ✘ Use different solutions, even for same stack ✘ Avoid using shared logic “Don't even consider microservices unless you have a system that's too complex to manage as a monolith.”
- 13. In theory ✘ Prefer REST via HTTP ✘ Facade services for 3rd-party API ✘ Unified log data & format ✘ Strangler pattern ✘ Tolerant readers Key points: Integration In our project ✘ Mostly HTTP, almost REST ✘ Gateway Service ✘ Tolerant readers (rest + json) ✘ DB Integration ✘ WCF (request-response, fire and forget)
- 14. Key points: Integration Summary ✘ Better stick to HTTP with REST ✘ Integration tests for 3rd parties ✘ Avoid API versioning
- 15. In theory ✘ Centralized logging ✘ Queryable log ✘ Unified log data & format Key points: Logging In our project ✘ Log from Cloud ✘ Simple Filtering ✘ Single format
- 16. Key points: Logging Summary ✘ Always store source module of event ✘ Use Correlation ID ✘ Don’t reinvent the Tools for logs: LogStash, Kibana.
- 17. In theory ✘ Blackbox tests of API ✘ Generating tests by documented API Key points: Testing In our project ✘ UnitTests ✘ Integration Tests ✘ PostMan ✘ WcfTestClient Summary ✘ Local debug environment (with faked boundaries) ✘ Simple test utility to test API
- 18. In theory ✘ Single Sign-On ✘ Authorized Clients ✘ Authorized Services Key points: Security In our project ✘ Central identity & auth Servers ✘ Everything authorized ✘ Token in HTTP Header identity and auth info Summary ✘ HTTPS is a MUST ✘ Avoid sending auth info in token ✘ Don’t reinvent the
- 19. In theory ✘ Single Sign-On ✘ Authorized Clients ✘ Authorized Services Key points: Security In our project ✘ Central identity & auth Servers ✘ Everything authorized ✘ Token in HTTP Header identity and auth info
- 20. Key points: Security Summary ✘ HTTPS is a MUST ✘ Avoid sending auth info in token ✘ Don’t reinvent the
- 21. In theory ✘ Cloud should help you ✘ If you help cloud Key points: Scaling In our project ✘ Almost all services support scaling ✘ Sync through tricks with MongoDB ✘ Cloud support of scaling
- 22. Key points: Scaling Summary ✘ Microservice should be scalable ✘ Think about DB bottlenecks ✘ Think of data sync (DB, queues)
- 23. In theory ✘ Independent service deployment ✘ ASAP ✘ Use Cloud or containers features Key points: Deployment In our project ✘ monolith deployment :( ✘ Independent patching possible ✘ Cloud doesn’t encourage auto deploy
- 24. Key points: Deployment Summary ✘ Separate CI & CD jobs for each service ✘ Deployment strategy
- 25. Our Learning path Our project Microservices onolythic pplication Service-oriented Architecture
- 26. Monolith ✘ Simplicity ✘ Consistency ✘ Inter-module refactoring Monolyth vs Microservices Microservices ✘ Partial Deployment ✘ Availability ✘ Help preserve modularity ✘ Multiple Platforms (but please no JS) Remember my advices?
- 28. What to Pick? What do we have? ✘ Rapid Host Provisioning ✘ Basic Monitoring ✘ Rapid App Deployment ✘ DevOps culture ... What do we need? Always consider ✘ Solution scale ✘ Teams configuration
- 29. Virtualization Containerization & ● Running on few hosts ● Environment close to production ● Easy management (with Cloud) ● Running on dev host ● Environment close to virtual ● Easy trace ● Easy management (even without cloud)
- 30. Containerization with .Net .Net stack usually requires Windows Containers usually require UNIX
- 31. Sources 1. “Building Microservices” by Sam Newman 2. Enterprise Integration Patterns at camel.apache.org 3.Microservices by Martin Fowler a.Microservices Conf Video 4.https://www.nginx.com/solutions/microservices/ 5.Majestic Monolith by David Heinemeier Hansson 6.Our project source code and docs
- 32. i.e.: ✘You’ve said… Can you explain… ? ✘What do you mean by …? ✘Have you tried …? ✘Can you suggest …? Questions?