Optimization, Performance, and Tuning
When considering upgrade time and speed, take into account all enabled features on your Nexus Repository Manager 2 instance that you may not need. You can optimize the performance of your upgrade by disabling specific features. As discussed in this article about performance and tuning, identify and then reduce your list of used features to improve the performance of your repository manager. See some highlights, below:
If your organization does not rely on system feeds, often used for team communication, learn how to disable them.
Repair index tasks
These tasks support searching components within the user interface, and do not need to be rebuilt that often, consider disabling them across all repositories.
Snapshot removal tasks
Enable both Remove Snapshots from Repository and Remove Unused Snapshots From Repository, which deletes old component versions no longer needed.
Repositories no longer supported
Remove any deprecated repositories. For example, any Maven 2 proxy repositories with the domain name "codehaus.org" should be deleted.
Rebuild Maven Metadata Files
This scheduled task should only be run if you need to repair a corrupted Maven repository storage on disk.
If you are a Nexus Repository Manager Pro user that uses the application for staging releases, redefine or reduce the number of configured staging rules and staging profiles.
Scheduled tasks for releases
If you find empty Use Index checkboxes under Task Settings, use the opportunity to disable or remove those specific tasks for releases.
To help you decide how to reduce scheduled tasks, improving the performance of your upgrade, review the knowledge base article.