Deploy and Host your Javelit App (standalone mode) on Railway

Javelit is a Java lightning fast data app development framework. Write your webapp as a simple Java class and deploy it in a minute with this railway template!
Learn more on GitHub.

About Hosting Javelit App

This app uses the jbang docker image to launch Javelit, pointing to the app you provide via the APP_URL variable. Your webapp is then deployed and available on the web with fully secured https and wss (secured websocket).

This app can automatically refresh if the code at the URL is changed. Enable this feature by passing a refresh interval in the SOURCE_REFRESH_INTERVAL variable.

Common Use Cases

Everything Java that needs a frontend!

demo app
analytics dashboard
interactive data app
ML/AI app
admin app
notebooks
devrel presentations

Dependencies for Javelit Hosting

Java 21
jbang
Javelit
add dependencies using JBang-style //DEPS comments at the top of your file.

Deployment Dependencies

Implementation Details

Once the app is deployed, enable serverless to make the Javelit app scale to zero when it's not used.
Make sure to set the RAM and CPU according to your app requirements. The trial plan of railway may not be able to support ML/AI use cases.
If you tune the RAM and CPU, make sure to update the JBANG_JAVA_OPTIONS variable that contains the JVM options. The default values are tuned for the Railway free trial.

Why Deploy Javelit App on Railway?

Railway is a singular platform to deploy your infrastructure stack. Railway will host your infrastructure so you don't have to deal with configuration, while allowing you to vertically and horizontally scale it.

By deploying Javelit App on Railway, you are one step closer to supporting a complete full-stack application with minimal burden. Host your servers, databases, AI agents, and more on Railway.