rob05c commented on issue #4007: Server Capability get by name - returns blank response array when the requested item doesn't exist URL: https://github.com/apache/trafficcontrol/issues/4007#issuecomment-545077220 I don't think this is a bug, it's a fundamental change to the API. For a 404 vs an empty array for objects that don't exist, I don't think either is the "right" solution. A 404 is probably more expected. But to say "the API returns an array of objects, and if your filter didn't have any, you get a successful empty array" is not a violation of HTTP. Moreover, the TO API has returned 200 [] for ages. It isn't documented behavior, but it's most certainly a specific behavior, that clients almost certainly rely on in places. Even if it doesn't violate the SemVer API Promise, we can't reasonably change this without breaking tons of people. Likewise, IMO we should continue to make new endpoints follow the same pattern as everything else. It wouldn't be a bad idea to do this in the next major version of the API (2.0), but we simply can't safely do it to 1.x.
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