Zero to Microservices

Transcript

1. Zero To Micro Services
2. Overview • Martin Fowler Micro Services • Application is a suite of small services • communicate with lightweight mechanisms, often REST
3. 12 Factor Apps • Store config in the environment • Treat backing services as attached resources • Execute the app as one or more stateless processes
4. Functional Detail • Routing • Validation • Persistance • Authentication • Testing
5. Where do we start? • From the API end • Build the API you want to talk too • Use the API as the basis for your service • Re use the API as the interface to your Datastore
6. Do we need to build all this? • Locate similar open source projects • Review Licence • Build on their foundation • Read a lot of Code • Start small and work your way up
7. Code • Lets look under the bonnet of a service that uses this structure.
8. Implementation: DRY’er • No frameworks • Use interfaces • High quality API Client as a side affect • Sharing parameter structs between layers
9. In Review • Learnt a ton building both the buildkite and assembly prototype • Need to replace the http.Handler routines with negoni + middleware + authentication anyone?! • Lots of things to rejig around that (delete some code). • Move some of the test helpers out into a library
10. Questions?
11. Links • 12 Factor Applications • assembly - REST API based on this talk • go-buildkite - Client API build using a similar model • thesrc - A bigger example by sourcegraph • go-sourcegraph - Client API also using this model