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Knowledge Base : JKOptions + DisableReuse benefits over standard connection pool mechanism
posted by SpringSource on October 27, 2009 02:36 PM
Alternative to mod_jk connecting to a Tomcat connection pool
The DisableReuse + JKOption is recommended because of how mod_jk handles connections. Typically the DisableReuse option is recommended when there are issues with keeping a connection alive.
mod_jk has built in health checks:
connect_timeout prepost_timeout
Both of them do the same thing. They send a PING to Tomcat. Tomcat responds with a PONG. And only then the connection is used as it is considered healthy.
Knowledge Base : Understanding the Apache Tomcat blocking IO connector
posted by SpringSource on October 27, 2009 02:24 PM
Why active threads remain high after load decreases using the Blocking IO connector
There are a number of different http connectors that can be used with Tomcat. They are:
• Blocking IO
• Non-blocking IO
• Native/Apache Portable Runtime (APR)
The blocking IO connector is the default http connector. With this connector each request is handled by a dedicated thread (obtained from a pool) until the request is complete at which point the thread is returned to the pool to be re-used by another request.
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