We need to limit the area that API can query by BBOX/Polygon

[danangmassandy]

We can use our staging server to test and get a good idea how large the area that the API can provide.

Note: when querying by list of points, I saw memory usage increase and it's not decreasing after the request is finished. I think this is from the mask numpy array that has been allocated/reserved. My guess is that NumPy allocates the array beforehand and tries to reuse the allocated space before deallocating the array. The memory increase happens 2-3times API calls only, after that it's not increasing anymore.