DBSync vs Google Cloud Datastream

DBSync automates data replication, consolidation, and capture of changes between systems. It supports real-time, two-way database synchronization through change data capture (CDC), and can replicate Salesforce, Dynamics 365, and Business Central data to databases, data lakes, and warehouses. Data Compare helps find mismatches between datasets for comparison and consolidation. Jobs can run on a schedule or in response to events; supported methods include CDC, ELT, ETL, and Reverse ETL. Deployment options include on-premise and cloud-hosted setups. Listed endpoints include SQL Server, SQLite, MySQL, PostgreSQL, Oracle, IBM Db2, MongoDB, Snowflake, AWS Redshift, AWS S3, Azure Synapse, Databricks, and MinIO. Documentation lists Batch API and J2EE Web Server modes, with EXE, Zip, Docker, and AWS Images deployments. A free Developer plan includes two connectors, up to 10,000 records, and up to three objects. A 14-day trial includes plan features and up to two standard connectors. Paid plans require an annual contract, and add-ons may cost extra.

Google Cloud Datastream is a serverless change data capture and replication service for synchronizing data. Streams can capture ongoing updates and backfill historical records, while the service scales automatically without resources for users to provision or manage. Supported destinations include BigQuery, Cloud Storage, and Apache Iceberg tables. Documented sources include Oracle, MySQL, PostgreSQL, AlloyDB, SQL Server, MongoDB, Spanner, Salesforce, ServiceNow, Workday, and Microsoft Dataverse; some sources are marked as preview. Datastream can work with Dataflow templates to load data from Cloud Storage into destinations including BigQuery, Cloud SQL, and Spanner. Connectivity options include IP allowlisting, a forward SSH tunnel, and private connectivity over VPC peering. Processing is charged, idle streams incur no cost, and other Google Cloud resources are billed separately. The free tier includes 100 GiB of eligible CDC data per month per billing account. Events are delivered at least once, but ordering is not guaranteed. Datastream is administered through the Google Cloud console, CLI, or REST API.