Data Sync Locally on Device
March 23, 2025
Description — Couchbase Lite Database Sync - Synchronize changes between databases on the same device
Description — Couchbase Lite Database Sync - Synchronize changes between databases on the same device
Related Content — Remote Sync Gateway | Peer-to-Peer Sync
Overview
Couchbase Lite supports replication between two local databases at the database, scope, or collection level. This allows a Couchbase Lite replicator to store data on secondary storage. It is useful in scenarios when a user’s device is damaged and its data is moved to a different device.
Example 1. Replication between Local Databases
CBLDatabaseEndpoint *targetDatabase = [[CBLDatabaseEndpoint alloc] initWithDatabase:self.otherDB];
CBLReplicatorConfiguration *replConfig = [[CBLReplicatorConfiguration alloc] initWithTarget:targetDatabase];
replConfig.replicatorType = kCBLReplicatorTypePush;
NSError* error = nil;
CBLCollection *collection = [database collectionWithName:@"collection1" scope:@"scope1" error:&error];
[replConfig addCollection:collection config:nil];
self.replicator = [[CBLReplicator alloc] initWithConfig:replConfig];
[self.replicator start];