What are the different types of caching?Caching is a technique to improves the access time when multiple users access a web site simultaneously, or a single user accesses a web site multiple times. It decreases server round trips for fetching data from database by persisting data in the memory.
ASP.NET supports three types of caching:
- Page Output Caching [Output caching]
- Page Fragment Caching [Output caching]
- Data Caching
Page Output CachingPage Output Caching is used to fetch information or data at page level . For output caching, an OutputCache directive can be added at the top of the .aspx page , specifying the duration (in seconds) that the page should be cached.
< %@OutputCache Duration= "60" VaryByParam= "DepartmentId"% >All the attributes that we specify in an OutputCache directive are used to populate an instance of the System.Web.HttpCachePolicy class. Moreover, It is good if the website is fairly static.
Page Fragment CachingASP.NET provides a mechanism for caching portions of pages, called page fragment caching . For example: user control. To cache a portion of a page, you must first encapsulate the portion of the page you want to cache into a user control . In the user control source file, add an OutputCache directive specifying the Duration and VaryByParam attributes. When that user control is loaded into a page at runtime , it is cached, and all subsequent pages that reference that same user control will retrieve it from the cache.
Data CachingData Caching is used to fetch the information of an application quickly based on the requirements. Cache object is just like application object which can be access anywhere in the application. The lifetime of the cache is equivalent to the lifetime of the application. Caching data can dramatically improve the performance of an application by reducing database contention and round-trips .
- Asp.Net Interview Questions (Part-1)
- Asp.Net Interview Questions (Part-2)
- Advantages of ASP.NET Web Development
- What is IIS - Internet Information Server
- What is Virtual Directory
- What is HttpHandler
- Page Directives in Asp.Net
- What is a postback
- What is IsPostBack
- What is global.asax
- Difference between Machine.config and web.config
- Difference between HTML control and Web Server control
- What is Query String
- Difference between Authentication and Authorization
- How to secure Connection Strings
- What is ASP.Net tracing
- Passing values between Asp.Net pages
- Differentiate between client side validation and server side validation
- How to Get host domain from URL
- Adding a Favicon To Your Website
- AutoEventWireup attribute in ASP.NET
- Can I use multiple programming languages in a ASP.net Web Application?
- Difference: Response.Write and Response.Output.Write
- How many web.config files can I have in an application?
- What is Protected Configuration in asp.net?
- Static variables, what is their life span?
- Difference between ASP Session and ASP.NET Session?
- What does mean Stateless?
- What is the Difference between session and caching?
- Which method is used to remove the cache object?
- How many types of Cookies are available in ASP.NET?
- What is Page Life Cycle in ASP.net?
- What is the code behind and Inline Code in Asp.Net?
- What is master page in ASP.NET?
- Can you change a Master Page dynamically at runtime?
- What is cross-page posting in ASP.NET?
- How to redirect a page in asp.net without performing a round trip ?
- How to register custom server control on ASP.NET page?
- How do you validate Input data in Asp.Net?
- What's the difference between ViewData and ViewBag?
- Difference between Response.Redirect and Server.Transfer
- What is the function of the CustomValidator control?
- Define RequiredFieldValidator?
- Difference between custom control and user control
- Difference between Label and Literal control in ASP.Net
- What are the major events in Global.Asax file?
- What is Event Bubbling in asp.net ?
- What is Delay signing?
- What is the difference between in-proc and out-of-proc?
- What is the difference between POST and GET?
- A potentially dangerous Request.Form value was detected from the client