Serial and parallel workflow demo

Based on Learn DBOS Java Tutorial.

Set up

If using nix flakes and direnv:

cp .envrc-example .envrc
$EDITOR .envrc
direnv allow

Otherwise install dependencies as described in dev-deps.txt

Run Postgres:

docker run -it --rm \
  --name dbos-postgres \
  -e POSTGRES_PASSWORD=dbos \
  -p 5432:5432 \
  postgres:17

Run app

gradle run

When the server is running, http://localhost:9000/serial and http://localhost:9000/parallel endpoints can be used to start workflows.