feat: Strongly cache Copilot files (#19766)

Speeds up every reload as there is no need to check if the files have changed
vaadin · Aug 15, 2024 · 8631c7d · 8631c7d
1 parent 21cd2fb
commit 8631c7d
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/vaadin-dev-server/src/main/java/com/vaadin/base/devserver/AbstractDevServerRunner.java b/vaadin-dev-server/src/main/java/com/vaadin/base/devserver/AbstractDevServerRunner.java
@@ -746,6 +746,11 @@ public boolean serveDevModeRequest(HttpServletRequest request,
             }
         });
 
+        if (requestFilename
+                .startsWith("/VAADIN/generated/jar-resources/copilot/")) {
+            // Cache copilot files as they have a generated hash at the end
+            response.setHeader("Cache-Control", "max-age=31536001,immutable");
+        }
         if (responseCode == HttpURLConnection.HTTP_OK) {
             // Copies response payload
             writeStream(response.getOutputStream(),