Ruby on Rails Caching And JavaScript Techniques
Cross posted from darthsid
While implementing caching in a recent rails project I came across some typical caching issues. In a lot of pages the content is same for all users but certain components in them have user specific actions. As an example, I have a page listing all public messages that users have posted(similar to the public timeline in twitter) but actions on those messages are user specific(eg: only owner or admin can delete a message). Also, most of these actions use ajax and the rails authenticity token in them also gets cached resulting in subsequent failures if the session changes. Another issue was that the timestamps in most pages is fuzzy and they become irrelevant if a page gets cached for too long. I could have created separate caches for each user but if the user base really grows managing the caches would become a nightmare and that would still not solve the authenticity token and the timestamp problem. The simplest solution was to use JavaScript, more specifically jQuery.
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