Hello, I'm developed the Point of Sales (POS) application in Windows and iPad (iOS devices) app using local database such as MSSQL Server Express and Sqlite3. These applications work great and FAST in local network environment. For multi stations I used MSSSQL network server (TCP open port 1433). For SQLite system, I've wrote a complete WCF server/client then hosted on local network. Again, the systems work great and FAST. Now I want explore Web base application which mean that I must hosting web services on the WWW or Cloud services.
So, my question is what web service protocol should I use to maintaining the satisfactory POS performance (the applications still have run locally as native app). I have looks in to JSON, REST protocol but not sure will give the performance that I need because in POS world it is requires that fast and a lot database records to SELECT(GET), UPDATE(POST) and INSERT(PUT) in real-time or close manner.
I know that I can't get a real-time performance using web services but if I can get 80% plus performance that worth shooting for. Thanks...
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