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In an application which embeds SQLite3 and uses an in-memory database, is it possible to replicate the database between two running instances of the application? I could do this by hand with a homebrew protocol duplicating all my DB accesses, but it seems like something that should be done inside the DB layer.
Brute force approach: Send it the “.dump” command to create a text representation of the data. Read that data in into the second database. Not sure you can use that.
If you need a fine grained update (sending a copy of each upto the other copy), have a look at
sqlite3_update_hookBut how do you plan to handle errors? For example, what happens when the copy of the DB in app2 can’t make an update for some reason?
To solve this, move the database to a server process and have the two apps talk to it.