diff --git a/gunicorn.conf.py b/gunicorn.conf.py
index ef99279..0d44b3f 100644
--- a/gunicorn.conf.py
+++ b/gunicorn.conf.py
@@ -7,7 +7,6 @@ restart workers but keep the preloaded app object from the old master process.
 
 import os
 import sys
-import fcntl
 import threading
 
 from sqlalchemy.engine import Engine
@@ -94,23 +93,15 @@ def post_fork(server, worker):
 
 
 def post_worker_init(worker):
-    """Warm the expensive dashboard cache once per container start."""
+    """Load the shared dashboard cache in every worker before user traffic."""
     enabled = os.getenv("DASHBOARD_PREWARM_ON_WORKER_INIT", "1").lower()
     if enabled in {"0", "false", "no"}:
         return
 
     def _warm_dashboard_cache():
-        lock_path = os.getenv("DASHBOARD_PREWARM_LOCK_PATH", "/tmp/momo-dashboard-prewarm.lock")
         try:
-            with open(lock_path, "w", encoding="utf-8") as lock_file:
-                try:
-                    fcntl.flock(lock_file.fileno(), fcntl.LOCK_EX | fcntl.LOCK_NB)
-                except BlockingIOError:
-                    worker.log.info("Dashboard cache prewarm already running; worker %s skips", worker.pid)
-                    return
-
-                from routes.dashboard_routes import warm_full_dashboard_cache
-                warm_full_dashboard_cache(reason=f"gunicorn-worker-{worker.pid}")
+            from routes.dashboard_routes import warm_full_dashboard_cache
+            warm_full_dashboard_cache(reason=f"gunicorn-worker-{worker.pid}")
         except Exception as exc:
             worker.log.warning("Dashboard cache prewarm failed in worker %s: %s", worker.pid, exc)