Hello World

Using your favorite language (Go, Python, Java, Scala, Bash, etc.), create a hello world web application API that listens on port 8080 and greets a user with Hello! and exposes a health status endpoint.

1. Application url should return a greeting such as Hello! as json or plain text (ex: when you open a browser and navigate to http://localhost:8080, it should return Hello! plain text.)
2. Application should provide a health endpoint (http://localhost:8080/healthz) that returns HTTP status (200 OK) which indicates health of the application and returns a valid json with the following information:
   • status: status of the app: online, success, OK, error, etc.
   • version: running application version (ex: 0.0.1)
   • uptime: time duration or time stamp since the app is running (ex: running since YYYY-MM-DD hh:mm:ss) Example: When you open a browser and navigate to http://localhost:8080/healthz it should return:

{
  "status": "OK",
  "version": "0.0.1",
  "uptime": "up since 2020-08-04 08:00:05"
}

3. What other information would you add to health endpoint json object in step 2? Explain what would be the use case for that extra information?

4. Create a docker file to build, package, deploy, and run this application locally with Docker.

5. How would you automate the build/test/deploy process for this application? (a verbal answer is enough. installation of CICD is bonus, not required)

   • What branching strategy would you use for development?
   • What CICD tool/service would you use?
   • What stages would you have in the CICD pipeline?
   • What would be the purpose of each stage in CICD pipeline

6. Your solution should include a README explaining how to build and run the application with Docker. We will follow the steps you provide in readme file and execute it to verify.

NOTE: Please submit github repository url for your solution.