There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
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这是最隐蔽的坑!因为多个虚拟线程会共享同一个载体线程,而 ThreadLocal 的数据是绑定到线程本身的(即载体线程)。如果在虚拟线程里用 ThreadLocal 存数据(比如当前登录用户),可能出现 A 虚拟线程存的数据被 B 虚拟线程读走的情况。。爱思助手下载最新版本对此有专业解读
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