diff --git a/.env.example b/.env.example
index 4f52b7c..597eaf7 100644
--- a/.env.example
+++ b/.env.example
@@ -17,6 +17,7 @@ MAX_DELIVERY_ATTEMPTS=3
 RETRY_BACKOFF_SECONDS=60
 FEISHU_TIMEOUT_SECONDS=10
 DISPATCH_INLINE=false
+DISPATCH_WAKEUP_ON_RECEIVE=true
 DELIVERY_BATCH_SIZE=100
 DELIVERY_CONCURRENCY=5
-WORKER_INTERVAL_SECONDS=15
+WORKER_INTERVAL_SECONDS=2
diff --git a/app/config.py b/app/config.py
index fb8907f..441181d 100644
--- a/app/config.py
+++ b/app/config.py
@@ -20,9 +20,10 @@ class Settings:
     feishu_timeout_seconds: int = 10
     timezone: str = ""
     dispatch_inline: bool = False
+    dispatch_wakeup_on_receive: bool = True
     delivery_batch_size: int = 100
     delivery_concurrency: int = 5
-    worker_interval_seconds: int = 15
+    worker_interval_seconds: int = 2
 
 
 def get_settings() -> Settings:
@@ -40,7 +41,9 @@ def get_settings() -> Settings:
         feishu_timeout_seconds=int(os.getenv("FEISHU_TIMEOUT_SECONDS", "10")),
         timezone=os.getenv("APP_TIMEZONE") or os.getenv("TZ", ""),
         dispatch_inline=os.getenv("DISPATCH_INLINE", "").lower() in {"1", "true", "yes", "on"},
+        dispatch_wakeup_on_receive=os.getenv("DISPATCH_WAKEUP_ON_RECEIVE", "true").lower()
+        in {"1", "true", "yes", "on"},
         delivery_batch_size=int(os.getenv("DELIVERY_BATCH_SIZE", "100")),
         delivery_concurrency=int(os.getenv("DELIVERY_CONCURRENCY", "5")),
-        worker_interval_seconds=int(os.getenv("WORKER_INTERVAL_SECONDS", "15")),
+        worker_interval_seconds=int(os.getenv("WORKER_INTERVAL_SECONDS", "2")),
     )
diff --git a/app/server.py b/app/server.py
index 346e69a..b3aa452 100644
--- a/app/server.py
+++ b/app/server.py
@@ -4,6 +4,7 @@ import html
 import json
 import mimetypes
 import os
+import threading
 import urllib.error
 import urllib.request
 from datetime import datetime, timezone
@@ -29,6 +30,31 @@ class AppContext:
         self.db = Database(settings)
         self.db.migrate(settings)
         self.dispatcher = Dispatcher(self.db, settings)
+        self.dispatch_wakeup_lock = threading.Lock()
+        self.dispatch_wakeup_running = False
+
+    def wake_dispatcher(self) -> None:
+        if self.settings.dispatch_inline or not self.settings.dispatch_wakeup_on_receive:
+            return
+        with self.dispatch_wakeup_lock:
+            if self.dispatch_wakeup_running:
+                return
+            self.dispatch_wakeup_running = True
+        thread = threading.Thread(target=self._run_dispatch_wakeup, name="dispatch-wakeup", daemon=True)
+        thread.start()
+
+    def _run_dispatch_wakeup(self) -> None:
+        try:
+            while True:
+                processed = self.dispatcher.process_due_deliveries(
+                    limit=self.settings.delivery_batch_size,
+                    concurrency=self.settings.delivery_concurrency,
+                )
+                if processed < self.settings.delivery_batch_size:
+                    break
+        finally:
+            with self.dispatch_wakeup_lock:
+                self.dispatch_wakeup_running = False
 
 
 def json_response(handler: BaseHTTPRequestHandler, status: int, payload: dict[str, Any] | list[Any]) -> None:
@@ -488,6 +514,7 @@ class Handler(BaseHTTPRequestHandler):
                     "interval_seconds": self.context.settings.worker_interval_seconds,
                 },
                 "dispatch_inline": self.context.settings.dispatch_inline,
+                "dispatch_wakeup_on_receive": self.context.settings.dispatch_wakeup_on_receive,
             },
         )
 
@@ -501,6 +528,8 @@ class Handler(BaseHTTPRequestHandler):
         try:
             payload = parse_json_body(self)
             result = self.context.dispatcher.receive_alert(payload)
+            if result.get("delivery_ids"):
+                self.context.wake_dispatcher()
             json_response(self, 202, result)
         except ValidationError as exc:
             json_response(self, 400, {"error": str(exc)})
diff --git a/docker-compose.yml b/docker-compose.yml
index 09510ef..915da26 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -14,6 +14,7 @@ services:
       RETRY_BACKOFF_SECONDS: ${RETRY_BACKOFF_SECONDS:-60}
       FEISHU_TIMEOUT_SECONDS: ${FEISHU_TIMEOUT_SECONDS:-10}
       DISPATCH_INLINE: ${DISPATCH_INLINE:-false}
+      DISPATCH_WAKEUP_ON_RECEIVE: ${DISPATCH_WAKEUP_ON_RECEIVE:-true}
       DELIVERY_BATCH_SIZE: ${DELIVERY_BATCH_SIZE:-100}
       DELIVERY_CONCURRENCY: ${DELIVERY_CONCURRENCY:-5}
     volumes:
@@ -33,9 +34,10 @@ services:
       RETRY_BACKOFF_SECONDS: ${RETRY_BACKOFF_SECONDS:-60}
       FEISHU_TIMEOUT_SECONDS: ${FEISHU_TIMEOUT_SECONDS:-10}
       DISPATCH_INLINE: ${DISPATCH_INLINE:-false}
+      DISPATCH_WAKEUP_ON_RECEIVE: ${DISPATCH_WAKEUP_ON_RECEIVE:-true}
       DELIVERY_BATCH_SIZE: ${DELIVERY_BATCH_SIZE:-100}
       DELIVERY_CONCURRENCY: ${DELIVERY_CONCURRENCY:-5}
-      WORKER_INTERVAL_SECONDS: ${WORKER_INTERVAL_SECONDS:-15}
+      WORKER_INTERVAL_SECONDS: ${WORKER_INTERVAL_SECONDS:-2}
     volumes:
       - dispatcher-data:/data