Microservices

Learn about microservices

dev and deployment of monolithic apps 1

divide the app into classes, functions and namespaces

dev and deployment of monolithic apps 2

handling a request runs in a single process

dev and deployment of monolithic apps 3

run and test the app on a laptop

dev and deployment of monolithic apps 4

use a deployment pipeline to ensure that changes are properly tested and deployed into production

componentisation via services axes

x - horizontal duplication, y - functional decomposition, z - data partitioning

microservices

a small application that can be deployed, scaled, and tested independently, and that has a single responsibility

essential trait of an individual microservice 1

isolation

essential trait of an individual microservice 2

autonomicity

essential trait of an individual microservice 3

single responsibility - do one thing well, have only one reason to change

essential trait of an individual microservice 4

exclusive state

essential trait of an individual microservice 5

mobility

decomposition into services 1

decompose by business capability

decomposition into services 2

decompose by domain driven design subdomain

decomposition into services 3

decompose by verb or use case

decomposition into services 4

decompose by nouns or resources

events first domain driven design

shift focus from domain objects to events in the domain to understand the essence of the domain from a data flow and communications perspective