NGINX Plus: Server Slow-Start

[mpstefan]

Part of Upstream Settings

The server slow‑start feature prevents a recently recovered server from being overwhelmed by connections, which may time out and cause the server to be marked as failed again.

In NGINX Plus, slow‑start allows an upstream server to gradually recover its weight from 0 to its nominal value after it has been recovered or became available. This can be done with the slow_start parameter to the server directive.

Acceptance

• The Upstream Settings policy has a field to enable slow-start on an upstream for all servers for the given time period.
• Documentation is updated to explain that this is an NGINX Plus feature
• This feature is added to the list of NGINX Plus exclusive features
• When Server Slow-Start is enabled in a policy without NGINX Plus, that policy is rejected.