spring-redis-cache

Demo application using distributed cache with Redis and Spring Boot

How to run the application

Just start the containers by running the following command:

docker compose up

Application Endpoints

The application exposes only 2 endpoints: a GET endpoint to retrieve a user by ID and a POST endpoint to change the user's name.

Curl commands to access these endpoints are showing bellow.

Example to get a user with id 1:

curl -X GET http://localhost:8080/users/1

Example to change the name of user with id 1:

curl -i -X PUT http://localhost:8080/users/1 -H 'Content-Type: application/json' -d $'{ "name": "New Name" }'

Application's Behavior

You can watch the log of application's container to see it's behavior on each endpoint call (there's a message on each repository method call to represent an access to the database when the information is not cached yet).

Example of message outputted when repository method is called: Called getUser()...

Run the following command to watch container's log:

docker logs spring-redis-cache -f

The application cache is configured to live for 20 seconds. After that, the application will call the repository again and a message will be outputted. If the PUT endpoint is called, that user information will be removed from cache.