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# 架构实战方案
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## 业务特点
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- 消息收发的及时性
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- 消息收发的准确性
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- 消息记录的检索高效
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- 消息的收送高可靠
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- 方便进行演进扩展
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- 无感知停机上线
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## 成就点
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- 企业级 千万用户实时在线长连消息推送系统
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- 企业级 消息长链接 Sass 架构完美解决方案
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## 消息推送主要方案
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- 完美应用示例(十万级): 线程池异步业务 + (Linux 句柄) + 单机Netty + 日志
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- 异步化完美方案(百万级): 线程池异步业务 + (Linux 句柄) + HA高可用 + 日志
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- 多服务端解决方案(千万级): Disruptor异步业务 + (Linux 句柄) + HA高可用 + 日志
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## 消息增量同步方案
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- 数据增量同步方案 https://blog.csdn.net/godlovedaniel/article/details/120220878
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- 观察者模式 消息收发模型和同步方案的一些心得 https://www.imooc.com/article/19165
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## 数据架构存储方法
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- MYSQL数同步方案 https://www.jb51.net/article/230528.htm
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## 消息服务部署方案
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## 消息服务上线/更新方案
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