Running Durable Workflows from Postgres UDFs
Blog post from DBOS
Postgres, known for its extensive ecosystem, is more than just a popular database; it can handle data processing with triggers, schedule tasks, and integrate external data sources. A new PostgreSQL workflows client has been introduced, enabling direct workflow enqueueing from Postgres using SQL functions. This feature allows workflows to be initiated from database triggers, ensuring that each new table row can be processed individually, or as part of a transactional outbox pattern within a larger database transaction. The process utilizes a user-defined function in the system database to enqueue workflows by inserting a new row into the workflow_status table, which is then available for execution by a server. Additionally, workflows can receive messages through another function that inserts messages into a notifications table. For further exploration, resources such as documentation, a GitHub repository, and a Discord community are available to assist users in managing durable workflows with Postgres.
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