pg_durable: Microsoft open sources in-database durable execution

Microsoft has open-sourced pg_durable, a PostgreSQL extension that enables long-running, fault-tolerant SQL functions to execute workflows directly within the database with automatic checkpointing and crash recovery. The tool eliminates the need for external orchestration services like Airflow or separate job queues by allowing developers to define reliable background work in SQL, with execution resuming from the last checkpoint after failures or restarts. pg_durable is now integrated into Azure HorizonDB, Microsoft's new PostgreSQL cloud service.