Deploying and Managing Supabase Functions

Once you've written your Supabase Functions, the next crucial step is to deploy them to your Supabase project. This makes them accessible via HTTP requests and allows your frontend applications to interact with your backend logic. Supabase provides a streamlined process for deploying functions, typically involving the Supabase CLI.

The primary command for deploying your functions is supabase functions deploy. This command reads the functions defined in your project (usually found in a supabase/functions directory) and uploads them to your Supabase project's serverless environment.

Before deploying, ensure you've logged into your Supabase account using the CLI with supabase login and that your local project is linked to your Supabase project via supabase link. The CLI will then handle the uploading and activation of your functions.

You can also deploy specific functions by providing their name as an argument to the deploy command. This is useful for updating individual functions without redeploying the entire set, saving time and resources.

After deployment, your functions become available via a unique HTTP endpoint. The base URL for your functions will be YOUR_SUPABASE_URL/functions/v1/. Appending your function's name to this URL will give you the specific endpoint for that function. For example, if you deployed a function named hello-world, its endpoint would be https://your-project-ref.supabase.co/functions/v1/hello-world.

graph TD
    A[Local Machine with Supabase CLI] --> B{supabase functions deploy};
    B --> C[Supabase Project Cloud Infrastructure];
    C --> D[Deployed Supabase Function];

Managing your functions involves keeping them up-to-date. When you make changes to your function code, you'll simply run supabase functions deploy again to push the latest version to Supabase. The CLI handles overwriting previous versions.