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Perlbal::Manual::FailOver(3) User Contributed Perl Documentation Perlbal::Manual::FailOver(3)

Perlbal::Manual::FailOver - Fail Over mechanism in Perlbal

Perlbal 1.78.

How Perlbal's Fail Over mechanism works.

Whenever Perlbal fails to open a connection to a machine, it assumes that machine is not available and spreads the load between the remaining servers. It keeps trying to open connections to that server according to "error_retry_schedule".

If there are no available servers, Perlbal will keep trying to open connections to the servers until "idle_timeout" is reached, upon which it will close the connection to the user. Clients interpret that closing differently: most will assume a 500 HTTP code, a few assume a 200 OK with empty content.

For more information on parameters "idle_timeout" and "error_retry_schedule" see Perlbal::Manual::ReverseProxy.

Perlbal::Manual::LoadBalancer, Perlbal::Manual::ReverseProxy.
2011-01-23 perl v5.32.1
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