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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ### Java中的跳躍表 Java API中提供了支持并發操作的跳躍表ConcurrentSkipListSet和ConcurrentSkipListMap。 有序的情況下: 1. 在非多線程的情況下,應當盡量使用TreeMap(紅黑樹實現); 2. 對于并發性相對較低的并行程序可以使用Collections.synchronizedSortedMap將TreeMap進行包裝,也可以提供較好的效率。但是對于高并發程序,應當使用ConcurrentSkipListMap; 無序情況下: 1. 并發程度低,數據量大時,ConcurrentHashMap 存取遠大于ConcurrentSkipListMap; 2. 數據量一定并發程度高時,ConcurrentSkipListMap比ConcurrentHashMap效率更高
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