Techniques for database replication between client devices

An apparatus, comprising:

• a processor circuit on a device;
• a local database management component operative on the processor circuit to send a collection subscription command from a client device to a database synchronization system, the collection subscription command specifying an object collection;
• and update a local database store for the object collection on the client device using a collection update;
• and
• a local queue component operative on the processor circuit to receive the collection update from the database synchronization system based on the collection subscription command, the collection update for the object collection, the collection update received as a push notification from the database synchronization system;
• and send an update acknowledgement in response to the collection update based on the updating of the local database store for the object collection.

At least one computer-readable storage medium comprising instructions that, when executed, cause a system to:

• send a collection subscription command from a client device to a database synchronization system, the collection subscription command specifying an object collection;
• receive a collection update from the database synchronization system based on the collection subscription command, the collection update for the object collection, the collection update received as a push notification from the database synchronization system;
• update a local database store for the object collection on the client device using the collection update;
• and
• send an update acknowledgement in response to the collection update based on the updating of the local database store for the object collection.