Service Mesh - Why? How? What?
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Service Mesh. What does it mean? We have already learned Microservices and can develop complex distributed applications. Is Service Mesh something we need or is another fancy buzzword? This presentation walks through the evolution of application architecture from Monolith to Service Mesh to give an idea of what a Service Mesh is, how it is applied to existing architectures and is focused help you to understand if you really need it.
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Service Mesh - Why? How? What?
- 1. Service Mesh Why? How? What?
- 2. Orkhan Gasimov Digital Transformation Architect @ GlobalLogic 15 years of software engineering; training & mentorship; author of trainings about: Microservices; Spring Cloud; Akka; 2Speaker
- 6. Evolution From Monolith to Service Mesh
- 9. 9Evolution App Server 1 Module Module Module Module App Server N Module Module Module Module Monolith
- 10. 10Evolution App Server 1 Module Module Module Module App Server N Module Module Module Module Admin Server Deployment & Configuration Monolith
- 11. 11Evolution Module Module Module Module Module Module Module Module Admin Server Deployment & Configuration Monolith
- 12. 12Evolution Admin Server Deployment & Configuration App App App App App App App App Monolith
- 19. 19Service Discovery Sales Sales Sales Warehouse Accounting Discounts Client API Gateway Service Registry
- 20. Users Accounting Warehouse 20Dynamic Coordination Sales Sales Warehouse Accounting Discounts Client API Gateway Service Registry
- 21. 21Evolution App App App App App App App App Discovery & Configuration Monolith Microservices Discounts Sales Warehouse Accounting
- 22. 22Evolution App App App App App App App App App App App App App App App App App App App App Discovery & Configuration Monolith Microservices
- 23. 23Evolution App App App App App App App App App App App App App App App App App App App App Server Discovery & Configuration Monolith Microservices
- 24. 24Evolution App App App App App App App App App App App App App App App App App App App App Server Modules Discovery & Configuration Monolith Microservices
- 25. 25Evolution App App App App App App App App App App App App App App App App App App App App Server Modules Fn Discovery & Configuration Monolith Microservices
- 26. 26Evolution App App App App App App App App App App App App App App App App App App App App Server Modules Fn ? Discovery & Configuration Monolith Microservices
- 27. 27Evolution App App App App App App App App App App App App App App App App App App App App Server Modules Fn ? Server Modules Fn ? Server Modules Fn ? Server Modules Fn ? Server Modules Fn ? Server Modules Fn ? Server Modules Fn ? Server Modules Fn ? Discovery & Configuration Monolith Microservices
- 28. 28Evolution App App App App App App App App App App App App App App App App App App App App Server Modules ? Server Modules ? Server Modules ? Server Modules ? Server Modules ? Server Modules ? Server Modules ? Server Modules ? Discovery & Configuration Fn Fn Fn Fn Fn Fn Fn Fn Monolith Microservices
- 33. 33CQRS + Event Sourcing Client API Gateway
- 34. 34CQRS + Event Sourcing Client API Gateway Command Query
- 35. 35CQRS + Event Sourcing Query Command Client API Gateway Command Query
- 36. 36CQRS + Event Sourcing Query Command Client API Gateway Service Registry Command Query
- 37. 37CQRS + Event Sourcing Query Command Client API Gateway Service Registry Command Query DB DB
- 38. 38CQRS + Event Sourcing Query Command Client API Gateway Service Registry Command Query DB DB Event Store
- 39. 39CQRS + Event Sourcing Query Command Client API Gateway Service Registry Command Query DB DB Event Store Event Handler
- 40. 40CQRS + Event Sourcing Query Command Client API Gateway Service Registry Command Query DB Event Store Event Handler DB Fn Fn Fn
- 43. 43Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Monolith PlatformMicroservices
- 44. 44Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Distributed Platform Monolith PlatformMicroservices
- 45. 45Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Distributed Platform Monolith PlatformMicroservices
- 46. 46Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Distributed Platform Monolith PlatformMicroservices
- 47. 47Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn Distributed Platform Monolith PlatformMicroservices
- 48. 48Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? Distributed Platform Monolith PlatformMicroservices
- 49. 49Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? ? ? Distributed Platform Monolith PlatformMicroservices
- 50. 50Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? ? ? HTTP Distributed Platform Monolith PlatformMicroservices
- 51. 51Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? ? ? ? ? Distributed Platform HTTP Monolith PlatformMicroservices
- 52. 52Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? ? ? ? ? Event Bus Distributed Platform HTTP Monolith PlatformMicroservices
- 53. 53Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? ? ? ? ? Event Bus Distributed Platform HTTP Monolith PlatformMicroservices
- 54. 54Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? ? ? ? ? Event Bus External Apps Distributed Platform HTTP Monolith PlatformMicroservices
- 55. 55Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? ? ? ? ? Event Bus External Apps IoT Distributed Platform HTTP Monolith PlatformMicroservices
- 56. 56Evolution Module Module Module Module Module Module Module Module Discovery & Configuration Fn Client Fn ? ? ? ? ? Event Bus External Apps Cloud IoT Distributed Platform HTTP Monolith PlatformMicroservices
- 57. 57 Monolith Evolution Module Module Module Module Module Module Module Module Discovery & Configuration PlatformMicroservices Distributed Platform Fn Client Fn ? ? ? ? ? Event Bus External Apps Polyglot Cloud IoT HTTP
- 60. 60Cascading Calls Sales Warehouse Accounting Discounts
- 66. 66Service Discovery (client side) Sales Warehouse Discounts AccountingCB CB CB SDSDSD SD Service Registry
- 67. 67Load Balancing (client side) Sales Warehouse Discounts AccountingCB CB CB SDSDSD SD Service Registry LB LB
- 68. 68AuthN & AuthZ Sales Warehouse Discounts AccountingCB CB CB SDSDSD SD Service Registry LB LB Auth Server Au Au Au Au
- 69. 69Data Security Sales Warehouse Discounts AccountingCB CB CB SDSDSD SD Service Registry LB LB Auth Server Au Au Au Au TLS TLS TLS
- 70. Users Accounting Warehouse 70Microservices Sales Discounts Sales Warehouse Accounting Client API Gateway Service Registry CB CB CB CB Auth Server SD SD SD SD SD LB LB LB Au Au Au Au Au
- 71. 71Development Effort Au Sales Discounts Warehouse Accounting API Gateway Service Registry Auth Server CB LB SD TLS
- 72. 72Development + Infrastructure Au Sales Discounts Warehouse Accounting API Gateway Service Registry Auth Server CB LB SD TLS
- 73. Service Mesh
- 74. 74Service vs Template Sales Sales Instance 2 Sales Instance 1 Sales Instance N ...
- 78. 78Infrastructure Decoupling Sidecar Proxy Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Instance Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Registry Auth Server SD SD SD SD SD SD A A A A A A
- 79. 79Infrastructure Decoupling Sidecar Proxy Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Instance Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Registry Auth Server TLS SD SD SD SD SD SD A A A A A A
- 80. 80Infrastructure Decoupling Sidecar Proxy Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Instance Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Registry Auth Server TLS CB CB CB CB CB CB SD SD SD SD SD SD A A A A A A
- 81. 81Infrastructure Decoupling Sidecar Proxy Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Instance Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Instance Sidecar Proxy Service Registry Auth Server TLS CB CB CB CB CB CB LB LB LB LB LB LB A A A A A A SD SD SD SD SD SD
- 82. 82Service Mesh Service Instance Service Instance Service Instance Service Instance Service Instance Service Instance Service Registry Auth Server Service Mesh CBLBA SDT … Sidecar Proxy Sidecar Proxy Sidecar Proxy Sidecar Proxy Sidecar Proxy Sidecar Proxy
- 83. 83Service Mesh Service Instance Service Instance Service Instance Service Instance Service Instance Service Instance Service Registry Auth Server Service Mesh CBLBA SDT …
- 84. • Resiliency • Circuit Breaking • Retries • Timeouts • Fault Handling • Load Balancing • Failover 84Service Mesh
- 85. • Resiliency • Circuit Breaking • Retries • Timeouts • Fault Handling • Load Balancing • Failover • Service Discovery 85Service Mesh
- 86. • Resiliency • Circuit Breaking • Retries • Timeouts • Fault Handling • Load Balancing • Failover • Service Discovery • Routing 86Service Mesh
- 87. • Resiliency • Circuit Breaking • Retries • Timeouts • Fault Handling • Load Balancing • Failover • Service Discovery • Routing • Security & Access Control • TLS & key management • Whitelists & Blacklists 87Service Mesh
- 88. • Resiliency • Circuit Breaking • Retries • Timeouts • Fault Handling • Load Balancing • Failover • Service Discovery • Routing • Security & Access Control • TLS & key management • Whitelists & Blacklists 88Service Mesh • Observability • Metrics • Monitoring • Distributed Logging • Distributed Tracing
- 89. • Resiliency • Circuit Breaking • Retries • Timeouts • Fault Handling • Load Balancing • Failover • Service Discovery • Routing • Security & Access Control • TLS & key management • Whitelists & Blacklists 89Service Mesh • Observability • Metrics • Monitoring • Distributed Logging • Distributed Tracing • Deployment • Container Support
- 90. • Resiliency • Circuit Breaking • Retries • Timeouts • Fault Handling • Load Balancing • Failover • Service Discovery • Routing • Security & Access Control • TLS & key management • Whitelists & Blacklists 90Service Mesh • Observability • Metrics • Monitoring • Distributed Logging • Distributed Tracing • Deployment • Container Support • Communications • HTTP • WS • gRPC • TCP
- 91. Pros & Cons Service Mesh
- 92. 92Pros & Cons • Pros • Solve common infrastructure cases outside of the microservice code • distributed tracing • logging • etc.
- 93. 93Pros & Cons • Pros • Solve common infrastructure cases outside of the microservice code • distributed tracing • logging • etc. • Freedom of microservice tech stack • no need to watch for libraries required for distributed app development
- 94. 94Pros & Cons • Pros • Solve common infrastructure cases outside of the microservice code • distributed tracing • logging • etc. • Freedom of microservice tech stack • no need to watch for libraries required for distributed app development • Helps to focus on business logic
- 95. 95Pros & Cons • Pros • Solve common infrastructure cases outside of the microservice code • distributed tracing • logging • etc. • Freedom of microservice tech stack • no need to watch for libraries required for distributed app development • Helps to focus on business logic • Cons • Complexity & Extra Hops • more runtime instances • each service call has to go through sidecar
- 96. 96Pros & Cons • Pros • Solve common infrastructure cases outside of the microservice code • distributed tracing • logging • etc. • Freedom of microservice tech stack • no need to watch for libraries required for distributed app development • Helps to focus on business logic • Cons • Complexity & Extra Hops • more runtime instances • each service call has to go through sidecar • Address a subset of problems • still have to deal with complex cases like complex routing, transformation and type mapping, integration with other services and systems
- 97. 97Pros & Cons • Pros • Solve common infrastructure cases outside of the microservice code • distributed tracing • logging • etc. • Freedom of microservice tech stack • no need to watch for libraries required for distributed app development • Helps to focus on business logic • Cons • Complexity & Extra Hops • more runtime instances • each service call has to go through sidecar • Address a subset of problems • still have to deal with complex cases like complex routing, transformation and type mapping, integration with other services and systems • Does not solve business logic or service integration/composition related cases
- 98. 98https://kubedex.com/istio-vs-linkerd-vs-linkerd2-vs-consul/ Istio Linkerd Linkerd2 Consul Connect Model Sidecar Node Agent Sidecar Sidecar Platform Kubernetes Any Kubernetes Any language Go JVM Go / Rust Go Protocol HTTP1.1 / HTTP2 / gRPC / TCP HTTP1.1 / HTTP2 / gRPC HTTP1.1 / HTTP2 / gRPC / TCP TCP Default Data Plane Envoy (supports others) Native Native Native (or Envoy) Sidecar Injection Yes No Experimental No Encryption Yes Yes Experimental Yes Traffic Control label/content based routing, traffic shifting Dynamic request routing, traffic shifting, per request routing ? static upstream, prepared query, http api / dns with native integration Resilience timeouts, retries, connection pools, outlier detection timeouts, retries, deadlines, circuit breaking ? Pluggable Prometheus Integration Yes Yes Yes No Tracing Integration Jaeger Zipkin None Pluggable Host to Host auth Service Accounts TLS Mutual Auth Experimental Consul ACL Agent Caching Yes No No Yes Secure connection outside cluster No Yes No Yes Complexity High High Low Low Paid Support No Yes Yes Yes link https://istio.io/ https://linkerd.io/1/overview/ https://linkerd.io/2/overview/ https://www.consul.io/intro/getting- started/connect.html
- 102. 50% Dev Effort 102Service Mesh
- 103. 50% Dev Effort + 50% DevOps Effort 103Service Mesh
- 104. 50% Dev Effort + 50% DevOps Effort = 100% Distributed Effort 104Service Mesh