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后端框架经典面试题

Spring

单例bean是线程安全的吗

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无状态的对象，即不可被修改的对象，是线程安全的

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AOP相关面试题

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事务失效的场景

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Spring事务只会对RuntimeError异常进行回滚

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bean的生命周期

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bean的循环依赖（循环引用）

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一级缓存作用：限制bean在beanFactory中只存一份，即实现singleton scope，解决不了循环依赖。

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一级和二级缓存可以解决一般的循环依赖，如果一个对象被增强，即代理对象，那么就需要三级缓存。

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三级缓存中的对象工厂可以帮助产生代理对象或者原始对象。

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SpringMVC

执行流程

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SpringBoot

自动配置原理

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Spring框架中常见的注解

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MyBatis

执行流程

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延迟加载使用及原理

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一级、二级缓存

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