On-stage hacking: build 12-factor microservices
summary
Live coding that builds a 12‑factor microservice using MicroProfile 2.2 and Open Liberty: generates JAX‑RS services, injects config via MicroProfile Config, and calls a backend service with the MicroProfile REST Client. Faults are simulated (every third request throws) and made resilient with @Retry/@CircuitBreaker/@Timeout/@Fallback from MicroProfile Fault Tolerance. Packs as a tiny WAR, shows port changes, deploys to Minikube with Helm, scales to 5 replicas, and streams logs to stdout — demo works after adding the fault‑tolerance annotations.
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chapters (16)
- 0:00Start
- 0:37About Emily
- 1:33Factors in a nutshell
- 2:05Why 12 factor?
- 2:38What is a twelve-Factor App?
- 6:19MICROPROFILE
- 7:46Dependencies
- 9:26IV. Backing services
- 11:18VI. Processes
- 12:11VII. Port binding
- 12:51VIIL. Concurrency
- 18:57XII. Admin processes
- 19:36THE FACTORS
- 21:46Micro Profile Config
- 23:57Micro Profile Fault Tolerance
- 24:30How to get started?
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