Develop an application Golem

Developing an application on golem consists of two major steps:

• Writing one or more Golem components in one of the supported programming languages.
• Defining external HTTP endpoints

This page summarizes the workflow of developing an application on Golem, with links to more specific guides for each step.

Creating an application

The primary tool for developing an application on Golem is the Golem CLI.

To create a new application, use the golem app new command, passing the name of the application and it's default programming language (note: it is possible to add components using different languages later).

golem app new my-app rust

Writing the code

The application is just a project directory that can contain multiple components. To learn how to add a new component and implement it, check the language specific guides linked below.

Guidelines per language

Experimentally supported languages

Iterations

During development the whole application can be built using

golem app build

and every component can be deployed using

golem app deploy

This is going to create a new version of each component. If there are workers created already, those are not going to be updated automatically to these new versions. Check the workers page for more information about updating workers.

Defining APIs

Most applications require a public HTTP API (but this is not mandatory - you can always use Golem's invocation API to directly communicate with your Golem application).

Guidelines

Check the defining custom APIs page as a starting point for learning how to define custom APIs.

The recommended way to manage these custom APIs is to create a single API definition YAML in the application's root directory. Future Golem versions will integrate API definitions into the application manifest itself.

Iterations

Use the golem api commands to iterate on your APIs.

golem api definition update api.yaml

golem api deployment delete my-definition/0.0.1

golem api deployment deploy my-definition/0.0.2