feat: add max-age setting to http response

README.md

@@ -7,6 +7,7 @@ The tool is build to integrate with **static page** by default, specifically Git
 ## Features
 + Aggregate page view count (include redirect URL)
 + Cache page view count with Redis to prevent API rate limit
+    + The http response is also cached to prevent unnecessary API call, default to `1 day`(since the view count is not updated frequently by the Google Analytics)
 + Easy deployment with Kubernetes(Helm Chart), Docker-Compose, or standalone
 
 ## Prerequisites

src/controller/controller.ts

@@ -40,6 +40,7 @@ class ViewController {
 
     this.logger.info("Views found in cache", { key, views });
 
+    res.setHeader("Cache-Control", "public, max-age=86400");
     res.json({ views: parseInt(views) });
   }