Bucardo vs Fivetran Database Replication

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.

Fivetran Database Replication copies data from databases into cloud data warehouses, databases, online data platforms, and data lakes. It is designed for large workloads and offers fully managed SaaS deployment or hybrid deployment, where selected pipelines run in the customer's secure environment under Fivetran's cloud control plane. Replication methods include log-based, timestamp-based, trigger-based, and log-free change data capture. Listed sources include Oracle, SQL Server, MongoDB, PostgreSQL, Db2 for i, MariaDB, MySQL, SAP ERP, and Cosmos DB. Updates are replicated incrementally in merge batches, with sync intervals configurable from every minute to every 24 hours. Users can exclude schemas or tables, and usage pricing counts inserted and updated rows but not unchanged rows or initial bulk loads. The free plan is listed at free, with limits for connection and activation rows and model runs. Database connectors include a 14-day trial with free historical sync. Enterprise connectors and hybrid deployment are limited to Enterprise and Business Critical plans.