[ASP.NET Core] Response caching

 ASP.NET Core   Response Caching 

▌Introduction

---

In HTTP 1.1, we can use Cache-Control header to define the response caching strategy.

We will learn how to use it thru the following common cache directives.

1.  no-cache

2.  public
Specify that the response is cacheable by clients and shared (proxy) caches.

3.  private
specify that the response is cacheable only on the client and not by shared (proxy server) caches.

See more information about the difference between private and public Cache-Control.

▌Environment

---

▋.NET Core 2.0.0 preview 1

▌Implement

---

▋Register service

▋Startup.cs

public void ConfigureServices(IServiceCollection services) {      services.AddResponseCaching(); }

▋No-Cache

[ResponseCache(Location = ResponseCacheLocation.None)]  [Route("[action]/{name}")] public IActionResult Index(string name) {      ViewBag.CurrentDatetime = $"Hello, {name}, it's {DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss")} now";      LogUtility.Logger.Debug($"Create Index response...");      return View(); }

We can set NoStore to true for preventing caching on some browser’s behavior.

[ResponseCache(Location = ResponseCacheLocation.None, NoStore = true)]

▋Result

▋Public Cache

[ResponseCache(Duration = 120)]//Cache-Control:public [Route("[action]")] public IActionResult Help() {     LogUtility.Logger.Debug($"Create Help response...");     return View(); }

▋Result

▋Demo

▋Private Cache

[ResponseCache (Duration = 120, Location = ResponseCacheLocation.Client)] [Route("[action]/{name}")] public IActionResult Index(string name)

▋Result

▋Demo

▋Cache Profiles

We can also set cache profiles in ConfigureServices for reusing the settings.

▋Startup.cs

public void ConfigureServices(IServiceCollection services) {        services.AddMvc((options) =>                 options.CacheProfiles.Add("default", new CacheProfile()                 {                     Duration = 60,                     Location = ResponseCacheLocation.Client                 })             );             services.AddResponseCaching(); }

▋Use it with ResponseCache

[ResponseCache(CacheProfileName = "default")]  //Using CacheProfileName [Route("[action]/{name}")] public IActionResult Index(string name)

▌Reference

---

▋Response Caching