feat: update

src/server.py

@@ -110,7 +110,7 @@ async def receive_heartbeat(ip: str):
 
 async def receive_heartbeat_internal():
     while 1:
-        timeout = 7
+        timeout = 70
         # 删除超时的节点
         cursor.execute("DELETE FROM nodes WHERE last_heartbeat < ?", (time.time() - timeout,))
         conn.commit()