Shulou(Shulou.com)06/03 Report--

127threadLocal, which does not provide a place by itself, but provides an independent copy on each thread to ensure thread safety.

13Cool volitile usage scenario, ① has multithreading to manipulate the variable, ②, this variable is variable.

14. The atomic method is used without ensuring the atomicity of the method, only the consistency of the results is guaranteed.

15J atomicReferences class, pay attention to the operation of CAS, every time the value of the memory address is compared with the expected value, if the same, it is modified, this is to ensure the atomicity of CAS.

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