> Or does every team doing microservices silently expect that one day a data team will start querying for a massive number of records-by-ID from every service,

> Or does every team doing microservices silently expect that one day a data team will start querying for a massive number of records-by-ID from every service, and the veterans in each team plan for this load pattern accordingly? What tends to be by far more common is that each team fails to envision that someone, somewhere, sometime in the not so distant future will want or be required to retrieve more than one "element" at a time via their APIs. And so panic ensues when "other entity" begins feeding 20 API retrievals per second at their "one-at-a-time API" and their performance goes off the cliff it was always sitting near.