* close #84 
* close #85

* close #82 
* 更新 Redis 单线程模型描述，读者可以参考《Redis 设计与实现》进行系统学习。
* See https://github.com/doocs/technical-books#database

close #80

* close #64
* update copyright

* close #75
* close #76

* close #73
* close #74

See https://github.com/doocs/advanced-java/blob/master/docs/from-readers/README.md

更新数据库中间件描述信息，详情请看：https://github.com/doocs/advanced-java/blob/master/docs/high-concurrency/database-shard.md

* fix typo in distributed-lock-redis-vs-zookeeper.md
* update redis-single-thread-model.md

更新 Redis 分布式锁相关描述
详细说明查看：https://github.com/doocs/advanced-java/blob/master/docs/distributed-system/distributed-lock-redis-vs-zookeeper.md

更新 Dubbo 集群容错策略相关描述
详细说明查看：https://github.com/doocs/advanced-java/blob/master/docs/distributed-system/dubbo-load-balancing.md

* fix typo and close #68
* thanks @dusked

fix #67, see https://github.com/doocs/advanced-java/blob/master/docs/high-concurrency/how-to-ensure-high-availability-of-message-queues.md

Add gitee for Chinese developers. See https://gitee.com/doocs/advanced-java

更新 Hystrix 多个文件描述信息

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* 新增维权行动
* 欢迎曝光抄袭者