What are the 2 required attributes of the @OutputCache directive?
Here, in that statement Duration and VarByParam are the two attributes of the OutputCache directive.
What is VaryByParam OutputCache?
The VaryByParam is a semicolon-delimited set of parameters used to vary the cached output. It allows varying the cached output by GET query string or form POST parameters. It can result in cache overflow or a denial of service attack on the Web server.
What is the importance of @output cache directive?
The output cache enables you to cache the content returned by a controller action. That way, the same content does not need to be generated each and every time the same controller action is invoked.
What is the use of VaryByParam attribute in OutputCache directive?
ANSWER: The VaryByParam attribute determines which versions of the page output are actually cached.
What is cache in C#?
Caching is a technique of storing frequently used data/information in memory, so that, when the same data/information is needed next time, it could be directly retrieved from the memory instead of being generated by the application. The ASP.NET runtime includes a key-value map of CLR objects called cache.
What is OutputCache MVC?
The output cache enables you to cache the content returned by a controller action. Output caching basically allows you to store the output of a particular controller in the memory. Hence, any future request coming for the same action in that controller will be returned from the cached result.
Which parameters does OutputCache support?
Types of parameter supported by OutputCache – Caching pages and data. Q.
What is the difference between ASP.NET and MVC?
ASP.NET is a web platform. It provides a layer that sits on top of IIS (the web server) which facilitates the creation of web applications and web services. ASP.NET MVC is a framework specifically for building web applications. It sits ontop of ASP.NET and uses APIs provided by ASP.NET.
How many filters are there in MVC?
The ASP.NET MVC framework supports four different types of filters: Authorization filters – Implements the IAuthorizationFilter attribute. Action filters – Implements the IActionFilter attribute. Result filters – Implements the IResultFilter attribute.
Why Redis is better than memcache?
Redis is surely more flexible and powerful, but Memcached does serve some purposes very well and in some cases achieves better performance. Redis supports data operations thanks to its data types, which can speed up case scenarios by reducing the network I/O counts and data sizes.
Is MemoryCache a singleton?
Note that the MemoryCache is a singleton, but within the process. It is not (yet) a DistributedCache. Also note that Caching is Complex(tm) and that thousands of pages have been written about caching by smart people.
Which is the HTTP header used for caching?
The primary HTTP header used for caching is Cache-Control, which is used to specify cache directives. The directives control caching behavior as requests make their way from clients to servers and as responses make their way from servers back to clients.
How is varybyquerykeys set in response caching middleware?
VaryByQueryKeys varies the stored response by the values of the given list of query keys. When a single value of * is provided, the middleware varies responses by all request query string parameters. Response Caching Middleware must be enabled to set the VaryByQueryKeys property.
Is there support for output caching in ASP.NET Core?
Support for output caching to better control server load is a design proposal for a future release of ASP.NET Core. For more information, see Add support for Output Caching (dotnet/aspnetcore #27387). In-memory caching uses server memory to store cached data.
How does response caching work on a web server?
Response caching reduces the number of requests a client or proxy makes to a web server. Response caching also reduces the amount of work the web server performs to generate a response. Response caching is controlled by headers that specify how you want client, proxy, and middleware to cache responses.