The slide deck of the presentation for Global Azure Bootcamp on 27th April 2019. The talk covers approaches to build resilient Microservices and deploying them to AKS. Along with code based approach with Polly, Istio Service Mesh is also covered during the session. Istio helps in adding features without making any code changes.

1. Resilient Microservices
with AKS
Nilesh Gule
@nileshgule | www.HandsOnArchitect.com
Welcome to the Singapore

2. A BIG thank you to the 2019 Global Sponsors!

4. Autonomous work together

5. https://samnewman.io/talks/principles-of-microservices/

6. https://microservices.io/patterns/microservices.html

7. https://github.com/dotnet-architecture/eShopOnContainers

8. https://github.com/NileshGule/AKS-learning-series

10. Software infrastructure layer for controlling and monitoring internal, service-to-
service traffic in Microservice application

12. No code changes

14. Recover from failure continue to function

16. handle transient failures

17. https://docs.microsoft.com/en-sg/azure/architecture/patterns/retry

18. .HandleTransientHttpError()
.OrResult(msg => msg.StatusCode == System.Net.HttpStatusCode.NotFound)
.WaitAndRetryAsync(6, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2,
retryAttempt)));
.AddPolicyHandler(GetRetryPolicy());

19. http://goupaz.com/docs/reference/config/traffic-rules/routing-rules.html#httpretry
httpReqRetries:
simpleRetry:
attempts: 3
perTryTimeout: 2s

20. Don’t wait forever

22. Policy timeoutPolicy = Policy.TimeoutAsync(30, TimeoutStrategy.Optimistic);
await timeoutPolicy
.ExecuteAsync(

23. https://istio.io/docs/tasks/traffic-management/request-timeouts/
timeout: 0.5s

24. Provide graceful degradation in event of failure

26. Don’t let one fault sink the whole ship

27. https://docs.microsoft.com/en-sg/azure/architecture/patterns/bulkhead

28. requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "1“

29. repeated retries likely to fail

30. https://docs.microsoft.com/en-sg/azure/architecture/patterns/circuit-breaker

31. .CircuitBreakerAsync(5, TimeSpan.FromSeconds(30));
.AddPolicyHandler(GetCircuitBreakerPolicy()

32. @EnableHystrixDashboard
@EnableCircuitBreaker

33. circuitBreaker:
simpleCb:
maxConnections: 100
httpMaxRequests: 1000
httpMaxRequestsPerConnection: 10
httpConsecutiveErrors: 7
sleepWindow: 15m
httpDetectionInterval: 5m
Istio Cirtcuit Breaker

34. https://developers.redhat.com/blog/2017/05/16/it-takes-more-than-a-circuit-breaker-to-create-a-resilient-application/

36. eShopOnContainers
Resiliency Patterns
8 fallacies of Distributed
Computing
12 factor apps
Polly
Istio
Istio Service Mesh
Hystrix patterns
History of Service Mesh
Rise of Service Mesh Architecture

39. Thank you very much
Code with Passion and Strive for Excellence
https://github.com/NileshGule/ABC2019
https://www.slideshare.net/nileshgule/presentations
https://speakerdeck.com/nileshgule/

40. $whoami
{
“name” : “Nilesh Gule”,
“website” : “https://www.HandsOnArchitect.com",
“github” : “https://github.com/NileshGule"
“twitter” : “@nileshgule”,
“linkedin” : “https://www.linkedin.com/in/nileshgule”,
“email” : “nileshgule@gmail.com",
“likes” : “Technical Evangelism, Cricket”
}

41. Q&A