Bucardo vs Google Cloud Datastream
Bucardo
bucardo.org
Google Cloud Datastream
cloud.google.comSide by side
| Figure | Bucardo | Google Cloud Datastream |
|---|---|---|
| Price from | Free | $0.40/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| macOS | Yes | — |
| Linux | Yes | — |
| API | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 3 |
| Spec score · Database Replication Software | 8.1 (#9) | 8.1 (#10) |
| Spec score · Data Replication Software | 8.1 (#10) | 8.0 (#13) |
| Purpose | Bucardo is an asynchronous PostgreSQL replication system for multi-source, multi-target operations. | Datastream is a serverless change data capture and replication service for synchronizing data with minimal latency. |
| Replication modes | It supports multi-source and multi-target replication, including one-direction master-standby replication. | A stream can capture ongoing changes and backfill historical data from its source. |
Plans
Google Cloud Datastream
- Datastream Free TierFree
- Datastream backfill$0.40 a month
- Datastream CDC$2 a month
In their own words
Bucardo
Bucardo is a free, open-source system for asynchronous PostgreSQL replication in multi-source and multi-target arrangements. It supports multi-way synchronization and one-direction master-standby replication. Users define named syncs that copy selected tables between a server and other servers. A Perl daemon listens for NOTIFY requests and connects to remote databases to copy data. Multi-source setups can use a standard conflict handler or a custom handler assigned per table. Configuration and replication databases require PostgreSQL 8.1 or later, while the configuration database also needs PL/pgSQL and PL/PerlU. The daemon needs a Unix-like operating system, is tested mainly on Linux and macOS, and does not run natively on Windows. Installation is available from source, RPM or Debian packages, and FreeBSD Ports. Bucardo does not replicate DDL or schema changes. The listed latest release is 5.6.0.
Google Cloud Datastream
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.