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# 一、对Kafka的认识
**1.Kafka的基本概念**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754630775641.jpg)
**2.安装与配置**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754633123518.jpg)
**3.生产与消费**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754635480063.jpg)
**4.服务端参数配置**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754638954047.jpg)
# 二、生产者
**1.客户端开发**
* 必要的参数配置
* 消息的发送
* 序列化
* 分区器
* 生产者拦截器
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754640130693.jpg)
**2.原理分析**
* 整体架构
* 元数据的更新
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754643448912.jpg)
**3.重要的生产者参数**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754645916366.jpg)
# 三、消费者
**1.消费者与消费组**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754648276354.jpg)
**2.客户端开发**
* 必要的参数配置
* 订阅主题与分区
* 反序列化
* 消息消费
* 位移提交
* 控制或关闭消费
* 指定位移消费
* 再均衡
* 消费者拦截器
* 多线程实现
* 重要的消费者参数
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754650284650.jpg)
# 四、主题与分区
**1.主题的管理**
* 创建主题
* 分区副本的分配
* 查看主题
* 修改主题
* 配置管理
* 主题端参数
* 删除主题
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754651345176.jpg)
**2.初识KafkaAdminCilent**
* 基本使用
* 主题合法性验证
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754654394115.jpg)
**3.分区的管理**
* 优先副本的选举
* 分区重分配
* 复制限流
* 修改副本因子
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754657395194.jpg)
**4.如何选择合适的分区数**
* 性能测试工具
* 分区数越多吞吐量就越高吗
* 分区数的上限
* 考量因素
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754660469790.jpg)
# 五、日志存储
**1.文件目录布局**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754664834959.jpg)
**2.日志格式的演变**
* v0版本
* v1版本
* 消息压缩
* 变长字段
* v2版本
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754667924602.jpg)
**3.日志索引**
* 偏移量索引
* 时间戳索引
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754669233226.jpg)
**4.日志清理**
* 日志删除
* 日志压缩
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754672876665.jpg)
**5.磁盘存储**
* 页缓存
* 磁盘I/O流程
* 零拷贝
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754673690252.jpg)
# 六、深入服务端
**1.协议设计**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754675218820.jpg)
**2.时间轮**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754676666450.jpg)
**3.延时操作**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754678142797.jpg)
**4.控制器**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754680989585.jpg)
**5.参数解密**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754682134209.jpg)
# 七、深入客户端
**1.分区分配策略**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754683319686.jpg)
**2.消费者协调器和组协调器**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754685617718.jpg)
**3._consumer_offsets剖析**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754687131448.jpg)
**4.事务**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754689683046.jpg)
# 八、可靠性探究
**1.副本剖析**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754690217222.jpg)
**2.日志同步机制**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754692316383.jpg)
**3.可靠性分析**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754694490547.jpg)
# 九、Kafka应用
**1.命令行工具**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754696168691.jpg)
**2.Kafka Connect**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754698537121.jpg)
**3.Kafka Mirror Maker**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754701282326.jpg)
**4.Kafka Streams**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754704216502.jpg)
# 十、Kafka监控
**1.监控数据的来源**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754706194578.jpg)
**2.消费滞后**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754712762009.jpg)
**3.同步失效分区**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754717964799.jpg)
**4.监控指标说明**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754718712567.jpg)
**5.监控模块**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754720818364.jpg)
# 十一、高级应用
**1.过期时间(TTL)**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754723146505.jpg)
**2.延时队列**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754725212394.jpg)
**3.死信队列和重试队列**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754727685846.jpg)
**4.消息路由**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754729373478.jpg)
**5.消息轨迹**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754731469373.jpg)
**6.消息审计**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754736310240.jpg)
**7.消息代理**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754738765840.jpg)
**8.消息中间件选型**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754740232376.jpg)
# 十二、Kafka与Spark的集成
**1.Spark的安装及简单应用**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754741847419.jpg)
**2.Spark编程模型**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754743687390.jpg)
**3.Spark的运行结构**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754744457430.jpg)
**4.Spark Streaming简介**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754745129296.jpg)
**5.Kafka与Spark Streaming的整合**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754748443144.jpg)
**6.Spark SQL**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754749191276.jpg)
**7.Structured Streaming**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754753842903.jpg)
**8.Kafka与Structured Streaming的整合**
![image](http://www.www.zyiz.net/i/li/?n=2&i=images/20210708/1625754756355381.jpg)
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