The Boundless open source project has been archived and is no longer maintained.

repo.boundlessgeo.com is unavailable?：https://support.planet.com/hc/en-us/community/posts/360009782998-repo-boundlessgeo-com-is-unavailable-

Answer：

The Boundless open source project has been archived and is no longer maintained. You can access the current open source project at http://geonode.org/.

http://geotoolsnews.blogspot.com/2020/04/change-to-maven-repositories.html

https://repo.osgeo.org/#browse/browse:Geoserver-releases:org%2Fgeoserver%2Fcommunity%2F2.9.0

2.19-SNAPSHOT

为什么version是SNAPSHOT？