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The difference between blocking and non-blocking lies in the first stage, that is, the data preparation stage. No matter whether it is blocked or not, the application is used to actively find the kernel for data, and the process of reading data is "blocked" until the data is read.她把茶几上的《武侠世界》推向陈启，同时郑重告诫道：你现在看到剧情似乎在往好的方向发展，但是要不了多久，不，应该紧接着就是一个彻彻底底的大悲剧。2017-07-18 14:31:11DDOS attacks mainly occur in the network layer. Its most obvious characteristic is to send a large number of attack packets, consume network bandwidth resources and affect normal users' access. At present, the detection and defense technology for DDOS attacks in the network layer is quite mature, and at the same time, some new attack methods-DDOS attacks in the application layer have emerged. Different from network layer DDOS attacks, application layer DDOS attacks mostly imitate the access behavior of legitimate users and will not generate a large number of attack data packets during data transmission, but they will consume server resources through a large number of database queries and other operations, which is more difficult to detect. According to the different attack modes, DDOS attacks include reflection amplification attacks in addition to ordinary flooding attacks. This type of attack often uses a legitimate server as a reflector, which sends a large number of data packets to the target, thus causing greater harm. At present, DDOS attacks against DNS servers are also common. Attackers often send fake domain names to DNS servers, consuming DNS server resources. At the same time, due to the recursive query mechanism in DNS servers, DDOS attacks against DNS servers have a large impact range.Jason偶然在当铺里面发现了一根神秘的金箍棒，竟然因此穿越“无门之门”来到了古代的中国！他发现自己已经置身于一个惊世预言中：一个使者要将传说中的武器交还给它的主人，从而解救被困在石头中五百年的齐天大圣。Jason在苦心领会中国功夫的同时还要面对内心的恐惧。到底Jason的这一趟旅程是因为太过着迷功夫所做的一场幻梦，还是真真切切的穿越时空去实现古老的预言？杨长帆看着这样的翘儿，忍不住又上前搂住她，柔声道：别说这话，咱们活的比谁都长，今后你看我的，咱们扬眉吐气活着，比谁都扬眉吐气