Multi-threading

Why you need it

Long-running processes often need multiple durable branches in flight, not one linear script.

Code examples

Choose an SDK (preference is sticky in this browser; default Python).

# MovementOf / GoToMulti patterns — see parallel design pattern.

Schedule concurrent Step executions and coordinate with Channels.

How Dex implements it

Concurrent Steps are separate durable executions under one Flow run, coordinated by the interpreter.

Traditional workarounds

People fake this with multiple workflows + correlation IDs, or shared DB rows and locks.