feat: implement output caching policy for search results with dynamic filtering

Author: csharpfritz

Web/Pages/Tips/Index.cshtml.cs

@@ -6,7 +6,7 @@
 
 namespace Web.Pages.Tips;
 
-[OutputCache(Duration = 21600, Tags = new[] { "tips", "content" }, VaryByQueryKeys = new[] { "category", "tag", "search", "difficulty", "page" })]
+[OutputCache(PolicyName = "SearchResults")]
 public class IndexModel : BasePageModel
 {
     private readonly IContentService _contentService;
@@ -36,6 +36,14 @@ public IndexModel(IContentService contentService, ILogger<IndexModel> logger)
 
     public async Task<IActionResult> OnGetAsync()
     {
+        // For search results, prevent aggressive browser caching
+        if (!string.IsNullOrEmpty(Search) || !string.IsNullOrEmpty(Category) || 
+            !string.IsNullOrEmpty(Tag) || !string.IsNullOrEmpty(Difficulty) || PageNumber > 1)
+        {
+            Response.Headers.CacheControl = "no-cache, must-revalidate";
+            Response.Headers.Pragma = "no-cache";
+        }
+
         try
         {
             var request = new TipSearchRequest

Web/Program.cs

@@ -111,6 +111,14 @@
 						 .Expire(TimeSpan.FromDays(3))        // Cache tips for 3 days
 						 .Tag("outputcache", "tips", "content")); // Add tags for better organization
 
+	// Policy for search results - shorter cache for dynamic filtering
+	options.AddPolicy("SearchResults", builder =>
+			builder.Cache()
+						 .SetVaryByHost(true)
+						 .SetVaryByQuery("category", "tag", "search", "difficulty", "pageNumber")
+						 .Expire(TimeSpan.FromMinutes(5))     // Cache search results for 5 minutes
+						 .Tag("outputcache", "search", "tips")); // Add tags for better organization
+
 	// Policy for frequently updated content - extended to 6 hours minimum
 	options.AddPolicy("DynamicContent", builder =>
 			builder.Cache()