Simple key value data store with CRD operations

Build a file-based key-value data store that supports the basic CRD (create, read, and delete) operations. This data store is meant to be used as a local storage for one single process on one laptop. The data store must be exposed as a library to clients that can instantiate a class and work with the data store.

Configuration

Configuring the data store file path
Edit the following file to set an custom file path

/src/main/resources/application.yaml
Example:

file-path: C:/custom-folder/

How to run this project

Note : Don't run this project with any IDE, either use Terminal or CMD because, the data will be moved into the datastore while stopping the application by utilizing JVM hooks. Due to the limitation that most of IDE's wont invoke JVM hooks, the application may fail to persist the data. So, execute this application in terminal.

Using docker

Pull the image from docker hub

$ docker pull nandakumar12/crd-app:latest

or Use docker to build an image

$ docker build -t crd-app .

$ docker run -p 8000:8000 --name crd crd-app

Using maven

Execute with maven directly

$ ./mvnw spring-boot:run

or Package it as an jar file then execute

$ ./mvnw package

$ java -jar CRD-0.0.1-SNAPSHOT.jar

How to run the Unit tests

All the Unit test cases are present in

/src/test/java/com/nandakumar12/crd/app

Using maven

$ ./mvnw test

REST Endpoints

Import the postman collection

crd-application.postman_collection.json file

or

Fire the below requests using any API Client

Create Data

POST /api/crd/data?key=123

request body

{
	"key1":"value",
	"timeToLive":"50"
}

Read Data

GET /api/crd/data?key=123

Delete Data

DELETE /api/crd/data?key=123