July 2016
Intermediate to advanced
150 pages
4h 24m
English
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Storing Sessions in Memcached
Twitalytics needs to track how many posts users create between the time they log in and the time they log out. This count is stateful and must be carried across transactions, survive any restarts of the application process, and be accessible from multiple processes when the app is scaled out. For these reasons, the count must be stored in a user’s session.
Each time a user starts an interaction with a web page, a session is created. The session stores state that’s carried over from one request to another for the same user. It usually includes things like username, breadcrumbs to track where they’ve been in the app, and even security tokens.
The default session storage mechanism in Rails is cookie based, which ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.