[消息队列](Linux%E5%AE%9D%E5%A1%94.md) [长连接](Linux%E5%AE%9D%E5%A1%94%E5%BC%80%E5%90%AF%E9%95%BF%E8%BF%9E%E6%8E%A5.md) [定时任务](%E5%AE%9D%E5%A1%94%E5%AE%9A%E6%97%B6%E4%BB%BB%E5%8A%A1.md)