Shell Test
The product is a Graph QL server which receives logs of visits by captains to ports from an internal system and provides query functionality on this data.
Assumptions
- The server runs without stopping and therefore needs no file backup of its in-memory cache of logs.
- It is possible for the same captain to be the captain of different vessels over time: therefore it is necessary to specify the captain and the vessel when requesting a particular set of logs.
- Logs can arrive in non-chronogical order: if it was guaranteed they would arrive in chronological order the server could be simplified.
Checking behaviour
The server's behaviour can be tested by running the supplied tests. Also it runs graphiql in a browser which is navigated to http://localhost:3200/graphql
Architecture diagram
In the file arch-diagram.jpg in this repo.