Strategies for Caching on the Web? [closed]

Question

What concerns, processes, and questions do you take into account when deciding when and how to cache. Is it always a no win situation?

This presupposes you are stuck with a code base that has been optimized.

Answer 1

I have been working with DotNetNuke most recently for web applications and there are a number of things that I consider each time I implement caching solutions.

• Do all users need to see cached content?
• How often does each bit of content change?
• Can I cache the entire page?
• Do I need a manual way to purge the cache?
• Can I use a single cache mechanism for the entire site, or do I need multiple solutions?
• What impacts occur if informaiton is somehow out of date?

Answer 2

I would look at each feature of your website/application a decided for each feature:

• Should it be cached?
• How long should it be cached for?
• When should the cache be expunged?

I would personally go against caching whole pages in favour of caching sections of the website/application.