• Nick Thomas's avatar
    Paginate the notes incremental fetch endpoint · 2066f29a
    Nick Thomas authored
    Returning an unlimited number of elements from any endpoint is a bad
    idea. For the notes endpoint specifically, we return all notes since
    a given `X-Last-Fetched-At` value. The backend specifies the new value
    to use for that item in the response, so if we return a limited set of
    notes and use an appropriate value, we get a rudimentary form of keyset
    pagination for free.
    
    The way the notes endpoint is used today, this is mostly a theoretical
    worry, and in practice, basically every response will fit within a
    single page anyway. However, we can use the `notes` endpoint *instead
    of* the `discussions` endpoint to fill a merge request discussion from
    the beginning of time. When we do this, large discussions are loaded in
    batches automatically, using pre-existing frontend code. So this change
    is best seen as preparatory work for removing `discussions` altogether.
    
    This commit also fixes a pre-existing problem with the endpoint, which
    is the fact that `updated_at` is stored with *microsecond* precision in
    the database. Converting the X-Last-Fetched-At value from integer to
    float allows us to avoid a range of boundary conditions that result.
    2066f29a
217673-keyset-paginate-notes-backend-only.yml 104 Bytes