Caching with ASP.NET

Question

I have form that displays several keywords (standard set of choice lists that changes rarely). There are about 4 such fields and each have about 20 choices or so.

I'm thinking if caching the keywords will be helpful for performance / best practice? Is there a strategy for determining when to cache?

Answer 1

Use a lazy initialized singeton with appropriate field to store your data. eg of this singleton at http://www.yoda.arachsys.com/csharp/singleton.html

You can have the property to be of type

"IDictionary<string, IList<string>"

if you want them organised by Category and iterable by keyword.

You can use

"IDIctionary<string, IDictionary<string, string>"

IDIctionary

if you want to be search able by category and keyword. If I read your question correctly, this would be an appropriate choice for you

Answer 2

You could use the ASP.NET Output Cache in your Page Directive.

 <%@ OutputCache Duration="60" VaryByParam="Keyword" %>

This will create a server-side cache of the page for each Keyword GET/POST request, and each cache will last 1 minute.

So if someone visits my-page.aspx?Keyword=Cards asp.net will render the page and save it in memory as HTML for 60 seconds. If someone visits my-page.aspx?Keyword=Books it will create a separate version of the page in HTML and cache it as well.