My solution for coding challenge described as follows.
We are adding a new bus provider to our system. In order to implement a very specific requirement of this bus provider our system needs to be able to filter direct connections. We have access to a weekly updated list of bus routes in form of a bus route data file. As this provider has a lot of long bus routes, we need to come up with a proper service to quickly answer if two given stations are connected by a bus route.
- routes can't have a loop (starting bus stop can't be the last one)
- service is prepared for provide new storage and import components - is easy to change memory storage to eg. elastic search or changing plain text file importer to eg. json/xml
- java 8 + gradle + spring boot
- spock unit tests and integration tests
- used findbugs and sonarqube plugin
- easy configuration based on application.yaml file
- additional REST API endpoints:
/api/imports(information about imports and changes) and/api/routes(my routes API design) - swagger support:
/swagger-ui.html(UI) - monitoring
/metrics(default instance metrics + custom ones, mainly for importing process)
- memory & performance should be improved
- add another storage type like elastic search