DOT NET Interview Questions - DotNetSpider

(A) What is scavenging ?
When server running your ASP.NET application runs low on memory resources , items
are removed from cache depending on cache item priority.cache item priority is set when
you add item to cache.BY setting the cache item priority controls which items scavenging
is removed first.
(B) What are different types of caching using cache object of ASP.NET?
You can use two types of output caching to cache information that is to be transmitted to
and displayed in a Web browser:
√
Page Output Caching
Page output caching adds the response of page to cache object.Later when
page is requested page is displayed from cache rather than creating the
page object and displaying it.Page output caching is good if the site is
fairly static.
√
Page Fragment Caching
If parts of the page are changing, you can wrap the static sections as user
controls and cache the user controls using pagefragment caching.
(B) How can you cache different version of same page using ASP.NET
cache object ?
Output cache functionality is achieved by using “OutputCache” attribute on ASP.NET
page header.Below is the syntax
√
√
VaryByParam :- Caches different version depending on input parameters send
through HTTP POST/GET.
VaryByHeader:- Caches different version depending on the contents of the
page header.
90