diff --git a/appPublic/README.md b/appPublic/README.md
new file mode 100644
index 0000000..e4c8dfb
--- /dev/null
+++ b/appPublic/README.md
@@ -0,0 +1,58 @@
+# EventDispatcher
+
+生产级异步事件调度器。
+
+## 特性
+
+- 支持普通函数
+- 支持 async 协程
+- 支持实例方法
+- 弱引用自动GC
+- 异常隔离
+- 超时控制
+- 自定义错误处理
+
+---
+
+# 使用示例
+
+```python
+import asyncio
+
+from event_dispatcher import EventDispatcher
+
+
+def on_login(data):
+    print(data)
+
+
+async def main():
+
+    dispatcher = EventDispatcher()
+
+    dispatcher.bind(
+        "login",
+        on_login
+    )
+
+    await dispatcher.dispatch(
+        "login",
+        {
+            "user": "张三"
+        }
+    )
+
+
+asyncio.run(main())
+```
+
+---
+
+# 项目结构
+
+```text
+event_dispatcher_project/
+├── event_dispatcher.py
+└── README.md
+```
+
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diff --git a/appPublic/k b/appPublic/k
new file mode 100644
index 0000000..764a070
--- /dev/null
+++ b/appPublic/k
@@ -0,0 +1,289 @@
+#!/usr/bin/env bash
+
+set -e
+
+PROJECT_DIR="event_dispatcher_project"
+
+mkdir -p "${PROJECT_DIR}"
+
+BT='```'
+
+# =========================================================
+# event_dispatcher.py
+# =========================================================
+
+cat > "${PROJECT_DIR}/event_dispatcher.py" <<'PYEOF'
+import asyncio
+import inspect
+import traceback
+import weakref
+from typing import Callable, Any
+
+
+class WeakCallback:
+
+    def __init__(self, func: Callable):
+
+        self._is_coroutine = inspect.iscoroutinefunction(func)
+
+        if inspect.ismethod(func):
+            self._ref = weakref.WeakMethod(func)
+        else:
+            self._ref = weakref.ref(func)
+
+        self._hash = hash(func)
+
+    @property
+    def is_coroutine(self):
+        return self._is_coroutine
+
+    def get(self):
+        return self._ref()
+
+    def __eq__(self, other):
+        return isinstance(other, WeakCallback) and self._hash == other._hash
+
+    def __hash__(self):
+        return self._hash
+
+
+class EventDispatcher:
+
+    def __init__(
+        self,
+        *,
+        continue_on_error=True,
+        log_traceback=True,
+        handler_timeout=None,
+        error_handler=None,
+    ):
+
+        self._events = {}
+
+        self.continue_on_error = continue_on_error
+        self.log_traceback = log_traceback
+        self.handler_timeout = handler_timeout
+        self.error_handler = error_handler
+
+    def bind(self, event_name: str, func: Callable):
+
+        if event_name not in self._events:
+            self._events[event_name] = set()
+
+        self._events[event_name].add(WeakCallback(func))
+
+    def unbind(self, event_name: str, func: Callable):
+
+        if event_name not in self._events:
+            return
+
+        target = WeakCallback(func)
+
+        self._events[event_name] = {
+            cb for cb in self._events[event_name]
+            if cb != target
+        }
+
+        if not self._events[event_name]:
+            del self._events[event_name]
+
+    async def _run_error_handler(
+        self,
+        event_name,
+        func,
+        exc,
+    ):
+
+        if not self.error_handler:
+            return
+
+        try:
+
+            if inspect.iscoroutinefunction(self.error_handler):
+                await self.error_handler(
+                    event_name,
+                    func,
+                    exc,
+                )
+            else:
+                self.error_handler(
+                    event_name,
+                    func,
+                    exc,
+                )
+
+        except Exception as e:
+            print(f"[EventDispatcher] error_handler failed: {e}")
+
+    async def _execute_handler(
+        self,
+        cb,
+        event_name,
+        data,
+    ):
+
+        func = cb.get()
+
+        if func is None:
+            return False
+
+        try:
+
+            if cb.is_coroutine:
+
+                coro = func(data)
+
+                if self.handler_timeout:
+                    await asyncio.wait_for(
+                        coro,
+                        timeout=self.handler_timeout,
+                    )
+                else:
+                    await coro
+
+            else:
+
+                if self.handler_timeout:
+
+                    await asyncio.wait_for(
+                        asyncio.to_thread(func, data),
+                        timeout=self.handler_timeout,
+                    )
+
+                else:
+                    func(data)
+
+            return True
+
+        except Exception as e:
+
+            print(
+                f"[EventDispatcher] "
+                f"handler failed: "
+                f"event={event_name}, "
+                f"handler={func}"
+            )
+
+            if self.log_traceback:
+                traceback.print_exc()
+
+            await self._run_error_handler(
+                event_name,
+                func,
+                e,
+            )
+
+            if not self.continue_on_error:
+                raise
+
+            return True
+
+    async def dispatch(
+        self,
+        event_name: str,
+        data: Any = None,
+    ):
+
+        if event_name not in self._events:
+            return
+
+        dead_callbacks = []
+
+        for cb in list(self._events[event_name]):
+
+            func = cb.get()
+
+            if func is None:
+                dead_callbacks.append(cb)
+                continue
+
+            await self._execute_handler(
+                cb,
+                event_name,
+                data,
+            )
+
+        for cb in dead_callbacks:
+            self._events[event_name].discard(cb)
+
+        if (
+            event_name in self._events
+            and not self._events[event_name]
+        ):
+            del self._events[event_name]
+PYEOF
+
+# =========================================================
+# README.md
+# =========================================================
+
+cat > "${PROJECT_DIR}/README.md" <<EOF
+# EventDispatcher
+
+生产级异步事件调度器。
+
+## 特性
+
+- 支持普通函数
+- 支持 async 协程
+- 支持实例方法
+- 弱引用自动GC
+- 异常隔离
+- 超时控制
+- 自定义错误处理
+
+---
+
+# 使用示例
+
+${BT}python
+import asyncio
+
+from event_dispatcher import EventDispatcher
+
+
+def on_login(data):
+    print(data)
+
+
+async def main():
+
+    dispatcher = EventDispatcher()
+
+    dispatcher.bind(
+        "login",
+        on_login
+    )
+
+    await dispatcher.dispatch(
+        "login",
+        {
+            "user": "张三"
+        }
+    )
+
+
+asyncio.run(main())
+${BT}
+
+---
+
+# 项目结构
+
+${BT}text
+event_dispatcher_project/
+├── event_dispatcher.py
+└── README.md
+${BT}
+
+EOF
+
+echo "================================================="
+echo "生成完成:"
+echo "  ${PROJECT_DIR}"
+echo "================================================="
+echo
+echo "查看:"
+echo
+echo "  cat ${PROJECT_DIR}/README.md"
+echo
diff --git a/appPublic/log.py b/appPublic/log.py
index 48db812..ae96fd2 100644
--- a/appPublic/log.py
+++ b/appPublic/log.py
@@ -1,5 +1,7 @@
 import sys
 import codecs
+import threading
+import queue
 from traceback import format_exc
 from appPublic.timeUtils import timestampstr
 from appPublic.Singleton import SingletonDecorator
@@ -10,7 +12,6 @@ def my_function():
     caller_frame = frame_info.f_back
     file_name = inspect.getframeinfo(caller_frame).filename
     line_number = inspect.getframeinfo(caller_frame).lineno
-    # print(f"Called from file: {file_name}, line: {line_number}")
 
 
 @SingletonDecorator
@@ -30,41 +31,80 @@ class MyLogger:
 		self.levelname = levelname
 		self.level = self.levels.get(levelname)
 		self.logfile = logfile
-	
-	def open_logger(self):
+		self.logger = None
+		# Async write queue + background thread
+		self._q = queue.Queue(maxsize=10000)
+		self._worker = threading.Thread(target=self._write_loop, daemon=True)
+		self._worker.start()
+
+	def _get_logger(self):
+		"""Lazy open file handle, keep it open."""
+		if self.logger is not None:
+			return self.logger
 		if self.logfile:
 			self.logger = codecs.open(self.logfile, 'a', 'utf-8')
 		else:
 			self.logger = sys.stdout
-	
-	def close_logger(self):
-		if self.logfile:
-			self.logger.close();
-			self.logger = None
-		self.logger = None
-	
+		return self.logger
+
+	def _write_loop(self):
+		"""Background thread: drain queue and write to file."""
+		fh = None
+		while True:
+			try:
+				item = self._q.get(timeout=1.0)
+				if item is None:
+					# Poison pill: shut down
+					if fh is not None:
+						try:
+							fh.flush()
+							if fh is not sys.stdout:
+								fh.close()
+						except Exception:
+							pass
+					break
+				if fh is None:
+					fh = self._get_logger()
+				fh.write(item)
+				# Only flush on critical/exception to avoid blocking on slow disks
+				if item.find('[exception]') >= 0 or item.find('[critical]') >= 0:
+					fh.flush()
+			except queue.Empty:
+				# Periodic flush to prevent data loss on crash
+				if fh is not None:
+					try:
+						fh.flush()
+					except Exception:
+						pass
+			except Exception:
+				pass
+
 	def log(self, levelname, message, frame_info):
 		caller_frame = frame_info.f_back
 		filename = inspect.getframeinfo(caller_frame).filename
 		lineno = inspect.getframeinfo(caller_frame).lineno
 		level = self.levels.get(levelname)
 		if level > self.level:
-			# print(f'{level=},{self.level=}')
 			return
 		data = {
-			'timestamp':timestampstr(),
-			'name':self.name,
-			'levelname':levelname,
-			'message':message,
-			'filename':filename,
-			'lineno':lineno
+			'timestamp': timestampstr(),
+			'name': self.name,
+			'levelname': levelname,
+			'message': message,
+			'filename': filename,
+			'lineno': lineno
 		}
-		self.open_logger()
 		s = self.formater % data
-		self.logger.write(s)
-		self.logger.flush()
-		self.close_logger()
-	
+		try:
+			self._q.put_nowait(s)
+		except queue.Full:
+			# Queue full: drop oldest (non-blocking, never stall the event loop)
+			try:
+				self._q.get_nowait()
+				self._q.put_nowait(s)
+			except Exception:
+				pass
+
 def clientinfo(message):
 	frame_info = inspect.currentframe()
 	logger = MyLogger('Test')
@@ -97,8 +137,7 @@ def critical(message):
 
 def exception(message):
 	frame_info = inspect.currentframe()
-	tb_msg =  format_exc()
+	tb_msg = format_exc()
 	msg = f'{message}\n{tb_msg}'
 	logger = MyLogger('exception')
 	logger.log('exception', msg, frame_info)
-