--- title: "Caching concept In ASP.NET MVC" description: "The caching is used for improving the performance in ASP.NET MVC. The caching is a technique which stores something in memory" author: "Anonymous User" published: 2019-07-05 updated: 2019-12-26 canonical: https://www.mindstick.com/articles/126234/caching-concept-in-asp-dot-net-mvc category: "asp.net mvc" tags: ["mvc", "mvc3", "mvc2", "mvc4", "mvc5"] reading_time: 4 minutes --- # Caching concept In ASP.NET MVC ### Use of Caching The caching is used for improving the performance in ASP.NET MVC. The caching is a technique that stores something in memory that is being used frequently to provide [better performance](https://answers.mindstick.com/qa/111685/how-do-i-optimize-my-code-for-better-performance). Into the MVC, the [OutputCache attribute](https://www.mindstick.com/forum/156059/what-is-outputcache-attribute-in-asp-dot-net-mvc) is used for applying Caching. OutputCheching will store the output of a [**Controller in memory**](https://www.mindstick.com/articles/13132/how-can-export-data-from-webgrid-to-excel-in-mvc) and if any other request comes for the same, it will return it from the cached result. ![Caching concept In ASP.NET MVC](https://www.mindstick.com/mindstickarticle/84b8933e-a0a5-45c2-b6ba-f01f54cb73d2/images/b460dda0-d629-4be5-bb9a-0a2f5870e29d.png)\ But unfortunately, there are only very few websites that take the minimum time to open and the reasons behind this are as following. - Huge content - Large and multiple images - [Complex business](https://www.mindstick.com/forum/161972/is-sql-more-vital-for-solving-complex-business-problems-or-power-bi-tableau-for-insights) logic - Too much server requests - Poor connection - Data Access Layer etc. So, there are several reasons for the slowness of a website. OutputCache attribute can have a parameter. ### Duration It describes the time in seconds. The example of duration is given below. The example of duration is given below. ``` [OutputCache(Duration = 60)] public ActionResult Index() {     var std = from e in db.Student     orderby e.ID     select e;     return View(std); } ``` ![Caching concept In ASP.NET MVC](https://www.mindstick.com/mindstickarticle/84b8933e-a0a5-45c2-b6ba-f01f54cb73d2/images/854424a1-1a97-4e9a-969d-83e09306e5f9.png) ### VaryByParam This describes cache will be stored on the basis of a parameter. The cache will be stored on the basis of the list of semicolon-separated by a string. An example of VaryByParam is given below. ``` [OutputCache(Duration = 60, VaryByParam = "Id")] public ActionResult Index(int Id) {     var std = from e in db.Student where e.DeptID = Id     orderby e.ID     select e;     return View(std); } ``` ![Caching concept In ASP.NET MVC](https://www.mindstick.com/mindstickarticle/84b8933e-a0a5-45c2-b6ba-f01f54cb73d2/images/98874097-7f2e-4bf7-9959-70843d576cf1.png) ### Location This specifies where the cache is stored. Here some [options are available](https://answers.mindstick.com/qa/112073/what-financial-aid-options-are-available-for-students-at-universities) for places(Location). - Any (Default)- Content is cached in three locations- the **Web Server**, any **Proxy Servers** and the **Web Browser**. - Client- Content is cached on the Web Browser. - Server- Content is cached on the Web Server. - ServerAndClient- Content is cached on the Web Server and the Web Browser. - None- Content is not cached anywhere. Now, the example of Location is given below. ``` [OutputCache(Duration = 60, VaryByParam = "Id", , Location = OutputCacheLocation.Client)] public ActionResult Index(int Id) {     var std = from e in db.Student where e.DeptID = Id     orderby e.ID     select e;     return View(std); } ``` **CacheProfile** maintains via the web.config file CacheProfile is another way to [handle cache](https://www.mindstick.com/interview/34005/how-can-you-handle-cache-consistency-issues). You can create profiles in **web.config**. An example is given below. ### In web.config ```                                                     ``` ### In Controller ``` [OutputCache(CacheProfile = "Long")] public ActionResult Index(int Id) {     var std = from e in db.Student where e.DeptID = Id     orderby e.ID     select e;     return View(std); } ``` ### Features of caching If we define the advantage of caching in one word, that will be “Performance”; and it can be achieved to minimize the following things. - Reduce the Server round trips [Hosting Server or Database Server or Any Other Server] - Reduce the Network Traffic [Http Call to Server] - Avoid repeating the same [data binding](https://www.mindstick.com/forum/161355/how-does-data-binding-work-in-wpf) logic ### Tips and Tricks when using ASP.NET MVC caching - We should not use caching with the data which changes frequently. - We should not use caching with Authentication logic. - We should not use caching with the data which is unique for the individual user. - We should not use caching with data which use very rare like the [privacy policy](https://www.mindstick.com/news/1303/whatsapp-privacy-policy-receives-ultimatum-until-end-of-february-says-eu) page. - We should not use caching for an Error page. Use caching with data which is used very frequently and the same data can be used by all user. - Always use caching with images or media files. Generally, we can cache our data using 3 ways in ASP.NET MVC. - Caching [Static Content](https://www.mindstick.com/interview/34346/how-to-enable-cache-for-static-content-in-asp-dot-net-web-development) - Caching whole or partial page response using OutputCache Attribute - Caching shared data ![Caching concept In ASP.NET MVC](https://www.mindstick.com/mindstickarticle/84b8933e-a0a5-45c2-b6ba-f01f54cb73d2/images/c4e10f3e-2907-433c-aa69-438bd9d7b02b.png) If you want to know more about it then you should follow this link : [https://www.mindstick.com/forum/55142/how-can-use-server-side-caching-in-mvc](https://www.mindstick.com/forum/55142/how-can-use-server-side-caching-in-mvc) --- Original Source: https://www.mindstick.com/articles/126234/caching-concept-in-asp-dot-net-mvc Copyright © MindStick Software Pvt. Ltd. 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