I have a SPA in Angular with which I need to show a collection of offices. Each row of the offices table has a tooltip showing a small list of employees and printers. How should I design the REST api (im using Spring)? I am in front of a crossroads:
1) use reference expansion:
/offices?expand=employees,printers
https://stripe.com/docs/api/expanding_objects https://opensource.zalando.com/restful-api-guidelines/#158
With this approach i will have to alter the database query (select * from offices + some left join for employees and printers). However if an user never hover its mouse on a offices row, I am serializing and transfering useless data.
2) dedicate endpoint
/offices/{id}/info
With this approach if an user never hover its mouse on a tooltip no request fires, otherwise I will have to use some caching mechanism to avoid too many requests to the server and manage the cache eviction on offices updates
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