Fix caching: Add no-cache headers and update README with cache-busting tips

Author: siiddhantt

README.md

@@ -20,12 +20,17 @@ Add to your GitHub profile README:
 
 Replace `your-username` with your GitHub username.
 
+**Note**: GitHub caches images. To see updated counts immediately, add a version parameter:
+```markdown
+![Profile Views](https://githitbox.duckdns.org/badge/your-username?v=2)
+```
+
 ### Live Examples:
 
-![Flat](https://githitbox.duckdns.org/badge/octocat?v=1)
-![Plastic](https://githitbox.duckdns.org/badge/octocat?style=plastic&v=1) 
-![Counter](https://githitbox.duckdns.org/badge/octocat?style=counter&v=1)
-![For-the-badge](https://githitbox.duckdns.org/badge/octocat?style=for-the-badge&v=1)
+![Flat](https://githitbox.duckdns.org/badge/octocat?v=2)
+![Plastic](https://githitbox.duckdns.org/badge/octocat?style=plastic&v=2) 
+![Counter](https://githitbox.duckdns.org/badge/octocat?style=counter&v=2)
+![For-the-badge](https://githitbox.duckdns.org/badge/octocat?style=for-the-badge&v=2)
 
 ## 🛠️ Local Development
 

main.py

@@ -238,7 +238,9 @@ async def get_profile_badge(
         io.BytesIO(img_bytes.read()),
         media_type="image/png",
         headers={
-            "Cache-Control": "public, max-age=60",
+            "Cache-Control": "no-cache, no-store, must-revalidate",
+            "Pragma": "no-cache",
+            "Expires": "0",
             "Content-Type": "image/png",
             "Access-Control-Allow-Origin": "*",
         },