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java - Why can the get() method in ConcurrentHashMap not be locked?
2017-05-17 10:00:31 0 1 810
2017-06-28 09:23:10 0 4 1149
Course Introduction:This article mainly introduces the relevant information about java using ConcurrentHashMap and counters to implement locks. Friends who need it can refer to java. Using ConcurrentHashMap and counters to implement locks. In some scenarios, we want threads to be queued according to certain business data. Simple code As follows: import java.util.ArrayList; import java.util.HashMap; import ja...
2017-06-10 comment 0 1887
Course Introduction:concurrenthashmap is thread-safe because the core expansion logic of ConcurrentHashMap is to allocate different array subscripts to different threads, and each thread processes nodes in their own table range; it is also because the thread safety of node insertion and expansion is mainly ensured through synchronized and .
2020-03-30 comment 0 7890