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1 #pragma once 2 3 #include <string> 4 #include <unordered_map> 5 #include <mutex> 6 #include <random> 7 #include <ctime> 8 9 #ifdef FI_FLAG 10 11 // 阅读全文
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C++ enum 转 string 阅读全文
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/* uint16_t xorsum(const char *buf, int len); */ .global xorsum .text xorsum: mov $0xffffffff,%eax mov %esi, %edx shr %edx jz loop_done mov %edx, %ecx 阅读全文
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1. SerializableSame results as if transactions executed one-by-one.Even though they may actually execute concurrently.r/w transactions are serializabl 阅读全文
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Linearizablity at a Single Site Note that: In (1)(2)(3) get()s and inc()s appear to be executed in sequential order (Edited on Mar. 15th, 2020) More p 阅读全文
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Comparisons between HDFS and GFS 阅读全文
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Typical Properties of Consensus Algorithms 1. safety: produce correct results under all non-Byzantine conditions include network delays/partitions, pa 阅读全文
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Zookeeper is a general-purpose coordination service. The ZooKeeper service comprises an ensemble of servers that use replication to achieve high avail 阅读全文
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1. Leaky Bucket (漏桶) 漏桶是一种常用的限流策略。NGINX 和 QEMU 中利用漏桶来实现限流。在漏桶模型中，桶的容量是固定的，当桶被流进的水填满时，多余的水就会溢出；虽然水可以以不同的速率流进桶中，但却必须以固定的速率从桶底部漏出。 可以将漏桶看成一个队列，队列有固定大小的容量 阅读全文
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pqsort implemented in java 阅读全文