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Q: 

should apache load balancer should handle 503 if there is a node available in cluster?

I have 2 tomcat (TomcatA, TomcatB) servers behind apache httpd(P). Am using mod_proxy with sticky session load balancing options.

If Request1 was always going to TomcatA and suddenly TomcatA goes down, shouldn't the proxy send the Request1 to TomcatB.

I am noticing that client browser gets a 503 error and then a request is automatically sent to TomcatB. Shouldn't the client be agnostic to all the server redirects IF the node in a cluster fails? Is there any setting in apache https to suppress the 503 from going to the client if there is some other node available? ailable in cluster?

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