How to maintain a real-time sync?

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I’m working on an app, and I’ve got the database processed. But a question arose of how I can create a real-time synchronization system of the app’s local database with the remote server database.

If anyone knows how to explain or has a related tutorial I am grateful.

database ios objective-c synchronization
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    Here says something about this process.

  • Thanks @"Mechanic, for what I’ve seen is a backend service that offers the real-time sync tool, but their sample codido and explanation is good. Thank you.

  • Let’s imagine that you have a tablet with a BDD and a server with a BDD. If you want to synchronize the 2, for example every 2 hours, okay, that seems logical. But if you want to sync 'in real time', why have a "local" BDD??? You only need to send data from the tablet by the server and save the data in the server’s BDD. As in the web: a server with the BDD and several clients?

  • Yes I understood the logic you proposed. But since I’m talking about a structure where the bank communicates and sends to the client app that there is new data and sends it in an automated way.

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After some research on the internet, and thanks to my friend @Qmechanic73, I found that this is a widely used tool in NOSQL database. Which are storage systems that do not use SQL (or relationship systems by tables).

The link presented by @Mechanic73 leads to the Coachdb website where it has a tutorial explaining about the synchronization service and with an example of use.

Link Coachdb.

Thank you.

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