Shaoyan Sun

Due to lack of state record of user query actions, the backend needs to perform ranking & re-ranking instead just re-ranking. This contributes to duplicate computations. Consider recording the result...

Since we use urllib to request image from image servers to the central server, sometimes the request fails and some exceptions are not handled. * Identify the exception * try...

Because currently we store user uploaded image and database image in different collections, too many codes heavily rely on condition statement as ``if from_db``. Current difficulty of unifying the two...