I'm using the google maps distance matrix javascript API to query the travel time from one point to about 50 destinations. in order to do this, I need to break my query up into multiple chunks, since the google maps API allows only a maximum of 25 destinations per request.
the problem that I'm having is the synchronization of the request and the result. other APIs offer the option to include a key that lets the developer match a request and an asynchronous result. however, since such a parameter is missing from the request specification, I have no idea how to make sure that I'm matching the right data to my incoming results.
I would be glad for a "clean" workaround - currently the only idea that I'm having is to have a unique number of destinations for each request, for instance the first with 25, the next with 24 destinations and so on. but I would not consider this a satisfactory approach. thank you