If I have more time

1. Create Swagger API Doc (OpenAPI).
2. Use logger instead of builtin log.
3. Add more unit tests (Cover HTTP handlers, storage, etc).
4. Add more logs for future investigation?
5. Add bonus task with CDT\CST

How to run and test API

1. Clone repo.
2. Put dataset.json file into project directory.
3. docker compose up -d - this command builds container with API and run it using port 8585 (can be changed in compose.yaml)
4. open api.http file and send requests from there with rest client (I used VSCode rest client)

How to run unit tests

1. go test ./...