ES4X application should create a
es4x-launcher during the install phase of
npm. If the launcher isn't present,
npm install # OR yarn
The launcher should be created in
Running the application is now as simple as::
npm start # OR yarn start
This command replaces the default
npm operation by running the application on the JVM runtime and using the Hello
World project the following output should be visible:
Server listening at: http://localhost:8080/ Succeeded in deploying verticle
You can now interact with the application with a browser or a http client:
> curl localhost:8080 Hello from Vert.x Web!
# Running without npm/yarn
When deploying applications to production it might feel natural not to bundle a package manager with your
application. For this case running the application shall not use
yarn. Running the application becomes:
It is possible to customize the startup of the application, do check:
# Scaling the number of verticles
Scaling the number of verticles (which is some cases increases the performance) can be done as:
# number of verticles to use: N=2 \ ./node_modules/.bin/es4x-launcher -instances $N
Usually increasing the number of verticles up to twice the number of cores gives the best performance.
Same as with the number of verticles, an ES4X application can be clustered as simple as:
To know more about clustering please read the official vert.x (opens new window) documentation.