agile microservices @scaibo
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The document discusses agile microservices and their advantages over monolithic architectures. It describes how to decompose a monolithic real estate management application into independent microservices for properties, facilities, and engineering. Microservices allow for improved independence, speed of development, automation, and use of different technologies. Inter-service communication can occur over REST, HTTP, or AMQP, while an API gateway pattern hides service complexity from clients. Cloud computing platforms like Docker and Convox can deploy and manage containerized microservices. The Internet of Things connects physical devices to these services over protocols like MQTT and WebSocket.
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agile microservices @scaibo
- 1. agile microservices @scaibo By Ciro Donato Caiazzo AL Lavoro International Milano, November 16, 2016
- 2. about me CIRO DONATO CAIAZZO CTO & Software Architect @SCAIBO SCAI Consulting s.r.l. ciro.caiazzo@scai-consulting.grupposcai.it cd.caiazzo@gmail.com @CyrusD87 https://www.linkedin.com/in/ciro-donato-caiazzo-35a38a32
- 3. in the next 40 minutes I will talk about... microservices @scaibo the sometimes (evil) monolith building microservices cloud computing solutions internet of things
- 5. the sometimes (evil) monolith
- 6. the sometimes (evil) monolith browser load balancer User interface Business logic Persistence database
- 7. the sometimes (evil) monolith : Features Simple to develop, test, deploy, scale… for small applications Application puts all its functionality into a single process Application scales by replicating the monolith on multiple servers if an application becomes large and complex?
- 8. the sometimes (evil) monolith browser load balancer User interface Business logic Persistence database User interface Business logic Persistence …
- 9. a real case: Real estate management platform (I) browser load balancer User interface property module Persistence database
- 10. a real case: Real estate management platform (II) browser load balancer User interface property module Persistence database facility module
- 11. a real case: Real estate management platform (III) browser load balancer User interface property module Persistence database facility module engineering module
- 12. a real case: Real estate management platform (then?) browser load balancer User interface property module Persistence database facility module engineering module
- 13. then? Problem! possible constraints on technology stack one change can affect the entire system one change in one component requires the deploy of the entire system difficult integration between cross-functional teams few release (more UI tests & QA work)
- 15. decomposing applications into services Divide an application in components Each component is built as a service Each service is a unit of software that is indipendently upgradable and deployable
- 16. a real case: Real estate management in microservices User interface property service facility service engineering service database database database
- 17. a real case: Real estate management in microservices property UI property service facility service engineering service database database database facility UI engineering UI
- 18. microservices: Rules a service should have a small set of responsibility SINGLE RESPONSIBILITY PRINCIPLE a service should be developed in small time (max 2 weeks) a service should be isolated from others (isolation for storage and deploy environment)
- 19. microservices: Rules a service should model a single and well defined part of the business domain DOMAIN DRIVEN DESIGN
- 20. microservices: Benefits Simplicity each service is relative small it is simple for a developer to understand the business logic a service can eventually be redesigned very quickly.
- 21. microservices: Benefits Independence each service can be released without affect the others problem on a service (like memory leak) does not affect the others Independent deploy
- 22. microservices: Benefits Speed release early & release often less coordination between developers cross-functional teams can work in parallel reducing the integration problems
- 23. microservices: Benefits o a service can be built with different technologies, in terms of platform & programming languages (.NET, Java, NodeJS, …) Database (Oracle, Sql Server, MongoDb, Cassandra, …) …but it is not true for the communication protocol : HTTP, AMQP, MQTT
- 24. microservices: Benefits Automation each service has a build on the Continuous integration server it is more simple to automate the continuous delivery & deploy blue green deploy for each service
- 25. a real case: Real estate management in microservices User interface property service facility service engineering service database database database
- 26. a real case: Real estate management in microservices User interface property service facility service engineering service database database databaseHow to manage interactions?
- 27. a real case: Real estate management in microservices User interface property service facility service engineering service database database database Between clients & services REST (HTTP) REST (HTTP) REST (HTTP)
- 28. a real case: Real estate management in microservices property service facility service engineering serviceBetween services REST (HTTP) REST (HTTP) REST (HTTP)
- 29. a real case: Real estate management in microservices property service facility service engineering serviceBetween services AMQP
- 30. microservices: a more complex scenario User interface facility service property service engineering service REST (HTTP) REST (HTTP) REST (HTTP) AMQP AMQP
- 31. microservices: a more complex scenario Granularity each client should know each service in details Localization each client should know the location of each service Complexity business logic to build and manage more complex objects at the client level
- 32. API Gateway pattern User interface facility service property service engineering service REST (HTTP) REST (HTTP) AMPQ AMQP AMQP API Gateway REST (HTTP) mobile interface MQTT AMQP
- 33. API Gateway Benefits hide to the clients how services are structured encapsulation of multiple requests for multiple services API optimization for each client Drawbacks increase in complexity require an additional network hop
- 35. cloud computing solutions Software as a Service (SAAS) Platform as a Service (PAAS) Infrastructure as a Service (IAAS) Container as a Service (CAAS)
- 36. cloud computing solutions Software as a Service (SAAS) Platform as a Service (PAAS) Infrastructure as a Service (IAAS) Container as a Service (CAAS)
- 37. cloud computing solutions Software as a Service (SAAS) Platform as a Service (PAAS) Infrastructure as a Service (IAAS) Container as a Service (CAAS)
- 38. cloud computing solutions Software as a Service (SAAS) Platform as a Service (PAAS) Infrastructure as a Service (IAAS) Container as a Service (CAAS)
- 39. cloud computing solutions Software as a Service (SAAS) Platform as a Service (PAAS) Infrastructure as a Service (IAAS) Container as a Service (CAAS)
- 40. docker: Build, Ship, Run A CAAS technology to build lightweight containers
- 41. how does Docker work? Server Host OS Hypervisor Guest OS Guest OS Middleware Middleware AppApp Server Host OS Docker engine Docker image Docker image Virtualization Container
- 42. how does Docker work? Build a container reading the instructions in Dockerfile Configure and orchestrate one or more containers in docker-compose
- 43. convox An open source tool to deploying, managing and monitoring applications in cloud infrastructure https://convox.com https://github.com/convox/rack https://convox-public.slack.com/
- 44. convox: Rack A rack is a structure to create and manage all the infrastructure needed to run and monitor your applications In a rack you can create and define each service to build your microservices using docker
- 47. IoT architecture IoT Gateway API Gateway property service facility service engineering service AMQP device device gateway MQTT HTTP AMQP WebSocket
- 48. Questions?