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补充线程池、Spring、RPC、深分页等内容 - #1462
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补充 ThreadPoolExecutor 的参数、提交任务时的处理顺序、拒绝策略和线程数的估算方法,以及多线程交替打印,并配图。
补充线上问题排查:内存溢出与内存泄漏、CPU 占用过高、死锁,附实际运行的输出。
补充 Explain 的 type 和 Extra 字段、慢查询日志,以及深分页的原因和优化方法,并配图。
补充协程,以及 Java 虚拟线程。
补充秒杀系统的设计:层层过滤请求、Redis Lua 预扣库存、异步下单和数据库兜底;补充海量数据处理:Top K、按哈希切分、位图和外部排序,并配图。
新增 Spring 笔记,包括 IoC 与 Bean 的生命周期、循环依赖、AOP 与自调用、事务的传播行为与失效原因、Spring Boot 自动配置,并配图。
补充 JWT 的组成、与 Session 的区别、失效与存储问题。
补充 RPC 的调用过程、服务发现、与 HTTP 的区别、超时与重试,并配图。
在 Java 分类下添加 Spring 笔记的链接。
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补充以下内容:
配 7 张示意图。