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In GraphOS, a launch represents the complete process of making a set of updates to a supergraph, usually initiated by changes to one of its subgraphs.

These updates might include:

  • Adding, removing, or modifying types and fields in a subgraph schema
  • Adding or removing entire subgraphs
  • Migrating types or fields between subgraphs

In some cases, a launch might consist entirely of changes that don't affect your supergraph's public API (such as migrating fields between subgraphs).

Launch status

Your supergraph's Launches page in Apollo Studio enables you to observe and monitor the schema delivery process for both in-progress and past launches:

The green PUBLISHED badge indicates which launch corresponds to your graph's current published schema.

Selecting a launch provides a breakdown of its individual steps and any errors or warnings that occurred during it:

From this detail view, you can view the timestamp and other details for each step in the launch process, including any schema checks that failed. You can also view the launch's associated supergraph schema (or any build errors if composition failed).

What's in a launch?

A launch encapsulates the following steps for a supergraph:

The steps of a launch
If composition succeeds...
If composition fails,
the launch fails
Apollo performs supergraph schema
composition with latest subgraph schemas
You publish a subgraph
schema update to Apollo
Apollo runs schema checks if enabled
Updated supergraph schema is
made available via Apollo Uplink
Studio updates UI and sends
build status webhook notifications
to reflect new published schema
Your router begins using
the new published schema
Launch complete
Edit on GitHub
Configuring schema checks