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一图看懂ThreadLocal
2022-07-04 14:43:00 【Hide on jdk】

重要变量:thread , threadlocal ,threadlocalmap ,entries(注意这个是弱引用,遇见gc直接释放),最后要remove

通过threadlocal来解决

begin->connect->close autocommit->jdbc->commit



强软弱虚:
弱引用:遇见gc回收

key释放value不释放,内存泄漏

锁失效,i是变化的值
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