On Thu, Aug 18, 2016 at 9:17 PM, Christopher Schultz < ch...@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > Gibu, > > On 8/18/16 10:55 AM, Gibu George wrote: > > I have setup a tomcat cluster that store the session information in > > a mysql dB. I also have a load balancer in front of this cluster. > > > > I have noticed a delay, in few seconds, before the session > > information is stored in the dB. Is there any way to reduce this > > delay and get tomcat to store the session information, in the dB, > > instantly? > > > > One of the threads in the tomcat archives talks about "synchronous > > session replication" ( ( > > https://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html#Cluster_Co > nfiguration_for_ReplicationTransmitter_(_synchronous_-_mode) > > > > > ) ) . Is this still a valid configuration for tomcat8.0 ? > > Are you wanting to speed-up replication across the cluster, or the > writes to the database-backed store? Or both? > Both, speed-up replication across the cluster and reduce the time to write to dB > > > My setup works fine when the load balancer is configured with > > sticky sessions. When sticky sessions are removed, i am facing > > issues in logging into the application thats hosted on my tomcat > > cluster. I believe this is due to the delay in storing the session > > information in dB. Is this right? > > Is there a problem using sticky sessions? Sticky sessions are pretty > much always a good idea since they solve many of these problems. Use > of sticky sessions does not preclude fail-over-without-re-login. > I am facing no major issue at this point with a sticky load balancer, though at times I see most of the requests going to just one machine and the other one almost at idle. Thought of better load distribution across the instances without a sticky load balancer. > > Can you post your existing configuration? > Setup in AWS, so static clustering server.xml : https://gist.github.com/141984/2c2d112afc8115de82c6f659df21cec6 context.xml: https://gist.github.com/141984/7d0b1bbb7acc3131236d981d0f737ded --gibu > > - -chris > -----BEGIN PGP SIGNATURE----- > Comment: GPGTools - http://gpgtools.org > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQIcBAEBCAAGBQJXtdiCAAoJEBzwKT+lPKRYkfEP/1KK1BNjDbE20L9pBS9i5NTV > B2A7IxN0F7D14QmBVgEe1RO3uB+e2XyS6up4S2VOW1g+YMUj2p2VoBjs6zfiIeQX > VlRkFbz9zyrHwhliR7BrM9fI510a9Tzq+upML1uwF23GUlPk1xKTo/fBI7CCs6He > j4SZTVSmK8Theo3m3HBR3AqHWyA7a8ehqijMDUza9OO/ED2gY29crV9gqm7nR/// > AaR4gNeEa+2I/ymyDyEJvQIDyWRpZFavkS2AXnu/IcHtxlJO96BIQsikdeNnI39E > P4slRzWSvpnmTNABbCecPPaLmZSkhZMJKwuHKo4YAQsVCBRjlj3DlE5zGAhRV4xj > jan4lhJjRDtvZHWXCOiGTxvnYtwl5uYjbef0XGeXz44AwoLWxxkRb1k7FmG2wJB+ > dNrRh8SXOy/FnWtFaQjapksfbO8szMohV7nVIHB+InmLSeab/Ifs+azDiuMwdWEl > 8iGkZPMn3AfbH593kD5oTy4qgBm+k+sUJ+/RmU7bLxu3JCDuuRce0U9cXHn7/12o > BnfspJY7vq6iSSD282RCknjcsS0uy2pQfeHED+S6KIS/bw4mGAQXTj2acp07MIol > pfes+scjVo+SJTRZiGLABpX+0VJgSaZI1OhWTVFWe8zQhCghXN+91/xT0XIQvNrH > p0MoP6H4qRrfhdHFdPEB > =ZLFO > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > -- --gibu
