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Merge branch 'jramsay-3953-fast-ssh-ce-docs' into 'master' 

Add release added and release backported to CE

See merge request gitlab-org/gitlab-ce!16553
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Marcia Ramos 2018-01-18 19:44:51 +00:00
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doc/administration/operations/fast_ssh_key_lookup.md
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# Fast lookup of authorized SSH keys in the database
> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/1631) in
> [GitLab Enterprise Edition Standard](https://about.gitlab.com/gitlab-ee) 9.3.
>
> [Available in](https://gitlab.com/gitlab-org/gitlab-ee/issues/3953) GitLab
> Community Edition 10.4.
Regular SSH operations become slow as the number of users grows because OpenSSH
searches for a key to authorize a user via a linear search. In the worst case,
such as when the user is not authorized to access GitLab, OpenSSH will scan the