- PolyServe is a vendor of Understudy, a high-availability webserver
- monitoring and failover utility for FreeBSD. Understudy resides on
- two or more webservers and monitors the health and responsiveness of
- websites. In the event that Understudy detects a failure, it
- fails-over requests for the failed website to a backup server. Thus,
- people browsing the website see no interruption or delay; from their
- standpoint the website keeps right on working. Understudy
- monitors IP services including HTTP, SMTP, TCP and FTP. Upon
- detection of a failure, Understudy removes the failed server from the
- cluster and fails-over to the secondary backup host. Understudy then
- generates a network-administrator notification via email and/or page
- so that whatever problem caused the failover can be remedied.
- For more information, visit www.polyserve.com.
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