What is caching and how to implement it?

Question

Sandeep Singh Shekhawat · Answer

Caching is the process of storing frequently used data on the server to fulfill subsequent requests. It uses to increases performance and scalability of site and mostly uses for static content or same data on site using many times. There are 3 types of caching- Output Caching / Page Caching Partial Page Caching Data Caching http://knowpacific.wordpress.com/2012/10/05/caching-application-pages-and-data/

Satyapriya Nayak · Answer

Hi Prabhakar Caching is a technique widely used in computing to increase performance by keeping frequently accessed or expensive data in memory. In context of web application caching is used to retain the pages or data across HTTP requests and reuse them without the expense of recreating them.ASP.NET has 3 kinds of caching strategies Output CachingFragment Caching Data Caching. Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Catching:- It is a performance improvement technique. 1.It handles storage of frequently accessed data in the memory of the system so that user can access data very quickly. 2.It is used to store recently visited webpage.suppose we are surfing the site and watching various pages. At the time we want to go back to the previous page it loads the page from the memory instead of the server. 3.It has a disadvantage too. Supose the website is continuously updated the user is not able to watch the changes. /* Style Definitions */ table.MsoNormalTable{mso-style-name:Table Normal;mso-tstyle-rowband-size:0;mso-tstyle-colband-size:0;mso-style-noshow:yes;mso-style-priority:99;mso-style-qformat:yes;mso-style-parent:;mso-padding-alt:0in 5.4pt 0in 5.4pt;mso-para-margin:0in;mso-para-margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:11.0pt;font-family:Calibrisans-serif;mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:Times New Roman;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:Times New Roman;mso-bidi-theme-font:minor-bidi;} CachingOutput Caching: Caches the dynamic output generated by a request. Some times it is useful to cache the output of a website even for a minute which will result in a better performance. For caching the whole page the page should have OutputCache directive. Fragment Caching: Caches the portion of the page generated by the request. Some times it is not practical to cache the entire page in such cases we can cache a portion of page Data Caching: Caches the objects programmatically. For data caching asp.net provides a cache object for eg: cache[States] = dsStates; Please refer the below links http://www.c-sharpcorner.com/UploadFile/vishnuprasad2005/ImplementingCachinginASP.NET11302005072210AM/ ImplementingCachinginASP.NET.aspx http://www.codeproject.com/Articles/6158/Caching-in-ASP-NET http://www.aspnet101.com/2010/07/asp-net-caching-tutorial-part-1/ Thanks