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Some time we need solution for database synchronization/replication in application end.Databases itself provides database replication solution but it has limitation when some customization required.
Cases When This Type Of System Required
- It could be help when limited number of tables are need synchronization functionality.
- Offline/Online management for data synchronization.
- Replication support needed across different combination of supported databases.
- Replication needed on partial data (Tables, Rows and column can be customize).
- etc
Thanks to open source community for providing us solution for this specific problems too.I only mention two open source solutions which I explore little bit.
SymmetricDS
– SymmetricDS is a web based/Standalone service/Embedded application, database independent, data synchronization system. Beyond replicating tables between relational databases the software incorporates functionality to handle a large number of databases, manage low-bandwidth connections and work within periods of network outage. The system supports two way replication, guaranteed delivery and multiple active schemas.
Daffodil Replicator – Daffodil Replicator performs data replication based on the ‘Publish and Subscribe’ model. Replicator supports bi-directional data replication by either capturing a data source snapshot or synchronizing the changes. It monitors data changes, synchronizes all data changes on periodic basis or on-demand. Replicator can use pre-defined conflict resolution algorithms to resolve conflicts between data sources.
