Describe your change

Unmarshal QueryRes.Hits into a dedicated Hit struct that holds json.RawMessage (alias for []byte) and the bare minimum of object attributes. Implement custom UnmarshalJSON and MarshalJSON to handle this json optimization.

It should be a considered a breaking change because QueryRes.Hits was previously exported as []map[string]interface. However, not breaking for developers using QueryRes.UnmarshalHits.

What problem is this fixing?

During the unmarshalling of the QueryRes object, the existing implementation will completely unmarshal each hit object into json default types. As a result, the method QueryRes.UnmarshalHits remarshals the default types just to unmarshal again into the users's desired type. For large result sets and/or large objects, this can be wasteful.

Updated 2024-05-08:

The gap between the green http.request span and the UnmarshalHits span is where the Aloglia client unmarshals the response into the QueryRes struct and Hits map[string]interface{}. The UnmarshalHits span takes even longer than the gap because the client re-marshals the Hits just to unmarshal into the user's desired struct.