# Accelerating graph development with subgraph mirroring in the Rover CLI

DevFeed: [Accelerating graph development with subgraph mirroring in the Rover CLI](<https://devfeed.tech/articles/accelerating-graph-development-with-subgraph-mirroring-in-the-rover-cli-23122.md>)

Original publisher: [Read original article](<https://www.apollographql.com/blog/accelerating-graph-development-with-subgraph-mirroring-in-the-rover-cli>)

Author: Jack Sellwood

Published: 2024-07-29T09:45:00Z

Content type: release

Language: en

Sources: [Apollo Blog](<https://devfeed.tech/sources/apollo-blog.md>)

Topics: [Development](<https://devfeed.tech/topics/development.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>), [Testing](<https://devfeed.tech/topics/testing.md>), [Tooling](<https://devfeed.tech/topics/tooling.md>)

Tags: [announcement](<https://devfeed.tech/tags/announcement.md>), [cli](<https://devfeed.tech/tags/cli.md>), [development](<https://devfeed.tech/tags/development.md>), [graphos](<https://devfeed.tech/tags/graphos.md>), [improvements](<https://devfeed.tech/tags/improvements.md>), [local](<https://devfeed.tech/tags/local.md>), [release](<https://devfeed.tech/tags/release.md>), [routing](<https://devfeed.tech/tags/routing.md>), [testing](<https://devfeed.tech/tags/testing.md>)

## AI overview

Apollo announces improvements to GraphOS local development through subgraph mirroring in the Rover CLI. Developers can bootstrap a local supergraph from a GraphOS Studio variant, test subgraph changes locally, and override selected subgraphs with a simpler configuration.

## Source excerpt

Today, we're excited to announce improvements to the GraphOS local development experience. These improvements make it faster for developers to contribute to the supergraph using the Rover CLI. Rover provides all the functionality you need to compose schemas, test changes locally, and publish schemas to the GraphOS schema registry. And with today's release, testing changes locally gets even faster.