问题
How would you implement a data synchronization solution that ensures data on a mobile device and web server are in sync.
回答1:
Take a look to this tutorial (part one and part two), basically what they do is add a timestamp attribute storing the last modifications. It is developed to synchronize with the parse.com backend service but it is extendable to any backend.
回答2:
We use a Unix-Timestamp in our company for this. The Server is comunicating with us in json over tls and client is using AsyncSocket. For Web-Server (https) you can take for example a REST-service and ASIHTTP for client. But our solutions are used for client independent services, so if you have only access with IOS/OS X it's maybe easier to use other solutions for direct synchronization :)
来源：https://stackoverflow.com/questions/16193422/data-synchronization-between-mobile-and-webserver