Table reconciliation in PostgreSQL: Are special utilities necessary?

The article addresses the pressing issue of data synchronization in distributed PostgreSQL systems. The author examines the necessity of using specialized tools like pg_comparator, pgCompare, or ACE to verify table consistency across different instances and data centers. With increasing infrastructure complexity and the adoption of robust failover mechanisms, data integrity verification has become critical. The author proposes an alternative approach based on simple transactions and custom Go scripts that execute SQL queries against both instances. The piece discusses the feasibility of developing a custom solution versus implementing third-party software, weighing efficiency and development effort. The article encourages readers to consider whether it is worth complicating the architecture with additional utilities if the task can be solved using simpler, more transparent methods that provide sufficient control over database states.