Railway-hosted Chainlit app w/ memory 💾

1. 💻 run locally

1. install chainlit from my minimal-change fork

pip install git+https://github.com/guyvandam/chainlit.git#subdirectory=backend/

(might need to install pnpm)

2. run

chainlit create-secret to generate a JWT secret key

3. run the demo app locally

chainlit run app.py

or add this snippet to app.py and run 'as usual'

if __name__ == "__main__":
    from chainlit.cli import run_chainlit
    run_chainlit(__file__)

2. 🚄 deploy w/ memory

1. create a new railway project w/ a postgres DB service
2. create the DB table by setting

DATABASE_URL=postgresql://postgres:Uhx...

which you can find on the railway variables tab and run

npx prisma migrate deploy

to create the tables needed for chainlit.

note: run it locally again, your db should be connected

3. deploy to railway w/ the modified Dockerfile from this template. The modification is for installing chainlit from my minimal-change fork.
4. add the env variables - make sure to create a reference env variable DATABASE_URL from the DB service DATABASE_PUBLIC_URL