[aerogear-dev] Feedback for aerogear-unifiedpush-server - personalized push notifications case

I received some feedback for the aerogear-unifiedpush-server. The case is: Company X would like to create a personalized push notifications campaign for Y hundred thousands customers/clients. Personalized means that each client/device should receive a unique message. The messages are automatically produced from rules defined in a CRM system, but this is something which doesn't affect our implementation. Currently, our selective send method is able to send one message to a selected list of clients. In cases like the above one, this translates into Y hundred thousands calls of the aerogear-unifiedpush-server selective send method. The question is whether we could change the signature of the selective send method and allow to pass an array of messages or not. In my understanding, the advantages/disadvantages of a such change are similar to the advantages/disadvantages of a service according its level of granularity. Fine Grained + simplicity and less business logic on server side + less amount of data exchanged between client/server - a lot of interactions between client/server - more interactions = more network overhead - complex client side Coarse Grained + less interactions between client/server + less network overhead & possibility of re-using the same network connection to send messages to the Push Networks (at least for APN) + simple client side - much data exchanged in each interaction between client/server - complex server side