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　　一场火灾发生，所有人都会设法逃离火场；一班勇士，他们忘我地千方百计进入火海。为的不是探险、也不是挑战人体极限，而是舍身相救被困于水深火热的市民。这班勇士就是「消防员」。然而消防员并非孤军作战，与他们并肩拼搏的，是一班临危不乱的救护员。他们为痛得呼天抢地的伤者进行急救、为吓至惊魂未定的市民伸出救援之手。勇气不是上天赋予，处变不惊的能力也不是一朝一夕而来的。尹旭沉吟片刻，说道：丞相，寡人想要送韩信一件礼物，你觉得如何？礼物？陈平有些诧异，眼神之中带着些许的疑惑。Resource isolation can be regarded as a protective shield for user services. This protective system has extremely powerful data and traffic processing capabilities to filter abnormal traffic and requests for users. For example, for Syn Flood, the shield will respond to Syn Cookie or Syn Reset authentication, filter forged source data packets or attacks of power generation through authentication of data sources, and protect the server from malicious connection erosion. The resource isolation system mainly protects the third and fourth layers of ISO model. The schematic diagram of resource isolation is as follows:青鸾公主听了也十分满意，微微低头。--------------------------------Synchronous Event Demultiplexer: It is itself a system call that waits for one or more events to occur. The caller will be blocked when calling it until an event is generated on the synchronous event separator. For Linux, synchronous event splitter refers to common I/O multiplexing mechanisms, such as select, poll, epoll, etc. In the Java NIO domain, the corresponding component of the synchronous event separator is the Selector; The corresponding blocking method is the select method.(1) When the server program starts, ChannelPipeline will be configured. ChannelPipeline is a ChannelHandler chain. When all events occur, a method in ChannelHandler will be triggered. This event will propagate in the ChannelHandler chain in ChannelPipeline. Then, get a NioEventLoop from the bossGroup event loop pool to realize the operation of the server-side program binding the local port, register the corresponding ServerSocketChannel on the Selector in the NioEventLoop, and register the ACCEPT event as the event of interest to the ServerSocketChannel.