hleb-kastseika / key-value-service

key-value-service

Standalone key-value REST service using Java, Spring Boot, Redis and Docker with Docker Compose. Due to dockerized Redis the data are persisted permanently. You can check it with next steps:

1. start up service with docker-compose up
2. save something using REST API
3. stop service using docker-compose
4. re-start service
5. try to get saved value using REST API

Requirements:

• Java 11 or higher
• Maven
• Docker
• Docker Compose

How to build and to run:

mvn clean package
docker-compose build
docker-compose up

How to test

After startup of both Docker containers you are able to call REST API. There are two available methods:

POST /{key}/{value}
GET /{key}

To put new value to the storage use POST method:

~$ curl -X POST 0.0.0.0:8080/newkey/testvalue

To retrieve the value from the storage use GET method:

~$ curl -i 0.0.0.0:8080/newkey
HTTP/1.1 200 OK
Date: Sat, 09 Apr 2022 17:32:34 GMT
Content-length: 6

newkey

If you try to get not existing value you will get 404 response:

~$ curl -i 0.0.0.0:8080/invalidkey
HTTP/1.1 404 Not Found
Date: Sat, 09 Apr 2022 17:36:12 GMT
Content-length: 6

{"timestamp":"2022-04-09T17:36:12.531+00:00","status":404,"error":"Not Found","path":"/invalidkey"}