feat: Use filter to add header "Cache-Control" into response instead of middleware

Author: drwatson1

ProjectTemplates/AspNetCore.WebApi/ReferenceProject/ReferenceProject/Filters/CacheControlFilter.cs

@@ -0,0 +1,21 @@
+using Microsoft.AspNetCore.Mvc.Filters;
+
+namespace ReferenceProject.Filters
+{
+    public class CacheControlFilter: IResultFilter
+    {
+        public void OnResultExecuted(ResultExecutedContext context)
+        {
+
+        }
+
+        public void OnResultExecuting(ResultExecutingContext context)
+        {
+            if( context.HttpContext.Request.Method == "GET" )
+            {
+                context.HttpContext.Response.Headers.Add(
+                    "Cache-Control", new string[] { "no-cache, no-store, must-revalidate" });
+            }
+        }
+    }
+}

ProjectTemplates/AspNetCore.WebApi/ReferenceProject/ReferenceProject/Middleware/PreventResponseCachingMiddleware.cs

@@ -66,6 +66,7 @@ public void ConfigureServices(IServiceCollection services)
                 .AddMvc(options =>
                 {
                     options.Filters.Add(new ValidateModelFilter());
+                    options.Filters.Add(new CacheControlFilter());
                 })
                 .AddJsonOptions(options =>
                 {
@@ -112,8 +113,6 @@ public void Configure(IApplicationBuilder app/*, IHostingEnvironment env*/)
             // Use our exception handler middleware before any other handlers
             app.UseExceptionHandler();
 
-            app.UseMiddleware<PreventResponseCachingMiddleware>();
-
             app.UseCors(builder => builder
                 .AllowAnyOrigin()
                 .AllowAnyMethod()