{"id":9845,"date":"2023-11-28T21:16:13","date_gmt":"2023-11-28T13:16:13","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=9845"},"modified":"2023-11-28T21:16:24","modified_gmt":"2023-11-28T13:16:24","slug":"java-zhong-concurrenthashmap-yu-hashtable-dui-bi","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/java-zhong-concurrenthashmap-yu-hashtable-dui-bi\/","title":{"rendered":"Java \u4e2d ConcurrentHashMap \u4e0e HashTable \u5bf9\u6bd4\uff1f"},"content":{"rendered":"<p>ConcurrentHashMap\u4e0eHashTable\u90fd\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u4f46\u662f\u5176\u5b9e\u73b0\u673a\u5236\u6709\u6240\u4e0d\u540c\uff0c\u6548\u7387\u4e5f\u6709\u6240\u4e0d<br \/>\n\u540c\uff0c\u5176\u4e3b\u8981\u533a\u522b\u5982\u4e0b\uff1a\tConcurrentHashMap (JDK8 \u4e4b<br \/>\nHashTable\tConcurrentHashMap \u524d)<\/p>\n<p>\u628a\u6240\u6709\u7684get\u3001put\u65b9\u6cd5\u52a0\u4e0a\u9501\u628a\u6570\u636e\u5206\u6bb5\uff0c\u6bcf\u4e2a\u5206\u6bb5\u5206\u522b\u52a0<br \/>\n\u5b9e\u73b0\u540c\u6b65\t\u9501\uff0c\u5b9e\u73b0\u540c\u6b65\uff0c\u63d0\u9ad8\u6548\u7387\u91c6\u7528CAS\u7b97\u6cd5\u63d0\u9ad8\u6548\u7387<\/p>\n<p>CAS (Compare And Swap)\u7b97\u6cd5\uff0c\u6bd4\u8f83\u66ff\u6362\uff0c\u7528\u4e00\u4e2a\u671f\u671b\u503c\u4e0e\u5f53\u524d\u503c\u6bd4\u8f83\uff0c\u5982\u679c\u671f\u671b\u503c\u4e0e\u5f53\u524d \u503c\u76f8\u540c\u5219\u7528\u65b0\u503c\u66ff\u6362\u5f53\u524d\u503c\u3002\u8fd9\u4e2a\u662f\u5e76\u53d1\u573a\u666f\u4e2d\u4e50\u89c2\u9501\u5e38\u5e38\u4f7f\u7528\u7684\u7b97\u6cd5\u3002<br \/>\n\u4e3a\u4ec0\u4e48HashMap\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff1f<br \/>\nHashMap\u5728\u6269\u5bb9\u7684\u65f6\u5019\uff0c\u5143\u7d20\u4e3a\u91cd\u65b0\u6392\u5217(\u540c\u4e00\u4e2a\u6876\u91cc\u9762\u7684\u5143\u7d20\u91c6\u7528\u7684\u662f\u5934\u63d2\u5165\u6cd5\uff0c\u539f\u6765\u7684\u94fe \u8868\u987a\u5e8f\u4f1a\u88ab\u5012\u7f6e)\uff0c\u5e76\u53d1\u573a\u666f\u53ef\u80fd\u4f1a\u5f62\u6210\u5faa\u73af\u94fe\u8868\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ConcurrentHashMap\u4e0eHashTable\u90fd\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u4f46\u662f\u5176\u5b9e\u73b0\u673a\u5236\u6709\u6240\u4e0d\u540c\uff0c\u6548\u7387\u4e5f\u6709\u6240\u4e0d \u540c [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[118],"tags":[],"class_list":["post-9845","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=9845"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9845\/revisions"}],"predecessor-version":[{"id":9846,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9845\/revisions\/9846"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9845"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}