Postgres based message queue with task and workflow runner.

Acknowledgments

SQL code is mostly taken or adapted from the excellent pgmq and pgflow projects.

TODO

• worker concurrency
• hide message for as long as task is running?
• GetFlowInfo / RunFlowWait
• RunTaskWait / RunFlowWait long polling
• add task and flow description fields
• add queue created_at field
• fair queueing? https://docs.hatchet.run/blog/multi-tenant-queues
• finish dashboard
• type safe task/flow input/output
• split tasks into standalone tasks and step tasks?
• use split tables for task runs like queues?
• put logger in Context?
• pause flows - wait for for signal