On Tue, Dec 6, 2011 at 1:30 PM, mpindyala <[email protected]> wrote: >> Yes , its just a thread . We did this to save 10-30ms for each http >> request that application does to back end providers. It seems connection >> manager takes 10-30ms just to close idle and expired connections before >> they can be reused. Please let us know if there are any pitfalls of doing >> this.
I don't know if this makes sense... if the connection is idle it can be re-used for another request, why would you close it? You can however set the max amount of time the ThreadSafeClientConnManager will keep a connection open for: http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/impl/conn/tsccm/ThreadSafeClientConnManager.html#ThreadSafeClientConnManager(org.apache.http.conn.scheme.SchemeRegistry, long, java.util.concurrent.TimeUnit) >> The reason we set those numbers high as a protection, our third responds >> within 500ms most of the time. >> It is just when there is something going on between hops , the delay is >> seem. >> So one questions which still needs clarification is >> httpclient.defaultMaxPerRoute = 10000 >> httpclient.maxTotalConnections = 20000 >> >> is defaultMaxPerRoute is per third party service we are calling ? if yes >> then >> if there are 4 services we have to call then settings should be >> httpclient.defaultMaxPerRoute = 10000 >> httpclient.maxTotalConnections = 40000 >> Each route getting 10000 , is that assumption correct ? I would need Oleg to verify (or spend more time than I want checking the source), but these are different things. From the docs for ConnPoolByRoute (http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/impl/conn/tsccm/ConnPoolByRoute.html), "connections are re-used only for the exact same route" & "connection limits are enforced per route rather than per host". So as I understand it a route and a host/connection are NOT the same thing. So you could have 4 as your MaxPerRoute and 1 as your maxTotalConnections... I don't think maxPerRoute > maxTotalConnections. >> we want to support upto 4M per hour Depending upon a lot of factors 4M per hour should be doable... I've been able to get 65K per sec. Bill- --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
