We used mod_jk for ages and have recently flipped back to mod_proxy for our java/tomcat apps, we found that we had connectivity issues with mod_jk - if the connection between apache/tomcat is severed then mod_jk did not always work cleanly - and subsequent requests would just hang. mod_proxy didn't have the problem.
The problem showed it self when we started segregating machines into virtual firewall zones - so traffic between machines was controlled.
It does mean that we don't have as easy a load-balanced setup - although we do send the requests back through our front-end load balancers and this seems effective.
James --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com --The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE.
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