-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Alec,
On 7/24/13 4:38 PM, Tomcat Random wrote: > So set the LB stickiness to the same > <session-timeout>n</session-timeout> number as in web.xml. That's what I'd do, if... >> "Assuming that the lb is updating the last-touch time for every >> request mentioning the session" > > Could you explain this a little further. How would the LB be > monitoring requests mentioning the session. Would that be a request > that had *JSessionID *in it? Correct. The lb needs to know that a particular user should be sent to a specific application server. Usually, that's done by sniffing the JSESSIONID cookie, or by reading the "jsessionid" path parameter from the URL. In either case, the lb needs to either keep a lookup table of session ids and backend servers to which they are bound (I believe this is how most lbs work) or be clever enough to know that Tomcat can give it a hint as to the server's identity -- this is what mod_jk does. mod_jk does not maintain a huge registry of session->server mappings. Instead, the session id has the backend-server's identity embedded in it (it comes from the "jvmRoute" attribute of the <Engine> element in server.xml) and knows which jvmRoute maps to which app server (you have to configure this yourself). I suppose a non-mod_jk lb could be taught to do this kind of thing. I've never used one, so I can't give you any specific advice. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJR8FDHAAoJEBzwKT+lPKRYt4MP/2DKgn+cAOZNSBpyttRf4gKe ols2Y7yG15w04A+ymMaBc+vLNKAlafQMTrwkfCbfKsOP652ASs4JYIz/zXy0d5GT IP0K2CWfhLnpoXcPxw9at7KagX8JBn+4qoQQyeZExda4x+2tnbPN1hOE1a2Aez5Y a4NgQvggMN2azF43aJa3jlbO9jLRQDEWYXfgw9rtDALWMv+yS+c+a+wS2Fv2Nniz I+w/yrTYFsR4IRF/upw2iHKG8SXlaJ/Q2rf3lAIP4yZtUyQPrbchs5bfnC8efpJC CpKqmXeoQX2NH0zdOQsSIvRmmKEiKJJR6lnCoxq/ssQq16zbQG8Tb1c0GDdX4FzJ LbMlO0XYGGnd5+X+CT4XtRxDoL8MCZf+qvYikSEO5LvTuuMdtO00JzDVvGb6qcsN sFm28S4vN0z8P+bk9ioob5N76zWNoQAchxQtqTKJg/JI9KM/lKkQ1fw/NfcrW8Sc AO3TrGPK2Bw0j7Q76hSDtvjiof9fk+6VgD40SEi09aneOo7a67wxq/2aPG8PchMO eMFtICuDMX1qgDBM0mBU+ed0V1quWor1ax/20CXQYyY2BjfniEDlGz9aAn4JMz3b OVwkHyPYmi6/FftgK4xAZM4AFlP7uRwxrYRqPuKRXu4R9wIxJwauYEoZ0p6n3Fax jbGeRC/lwRjECS+djhEd =8uP2 -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
