How can I not get logged out with a CakePHP application running on Heroku?

How can I not get logged out with a CakePHP application running on Heroku?

References

Reference NO 1

http://stackoverflow.com/questions/15192565/how-can-i-not-get-logged-out-with-a-cakephp-application-running-on-heroku

Reference NO 2

http://stackoverflow.com/questions/14790217/heroku-php-app-failing-to-write-to-filesystem-on-cedar-stack

Reference NO 3

http://www.jisaacks.com/setup-cakephp-app-on-heroku

Reference NO 4

https://groups.google.com/d/topic/cake-php/9Gcibq-1EKQ

Reference NO 5

http://danrice.net/articles/deploy-cakephp-on-heroku

Reference NO 6

http://cakephp.1045679.n5.nabble.com/Cache-errors-on-Heroku-with-update-to-2-3-but-works-fine-on-local-td5713484.html

Reference NO 7

http://vipankumar1987.wordpress.com/tutorials/nodejs/getting-started-with-node-js-on-herokucedar/

Reference NO 8

http://gautamrege.wordpress.com/2009/11/20/migrating-an-existing-deployment-to-heroku/