DBOS is a Java library that enables durable workflows using Postgres to manage state and recover from failures. It allows developers to create reliable applications without needing separate services or complex setups. Features include asynchronous execution, durable queues, scheduling, and notifications.

Armin Ronacher discusses creating a lightweight SQL library called Absurd for building durable workflows using only Postgres. It enables reliable execution of tasks that can survive failures and restarts by storing state information in the database. The approach avoids the complexity of third-party services, allowing for self-hosted solutions.