{"id":10631,"date":"2023-11-28T21:40:24","date_gmt":"2023-11-28T13:40:24","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10631"},"modified":"2023-11-28T21:40:27","modified_gmt":"2023-11-28T13:40:27","slug":"java-zhongsynchronizedmap-heconcurrenthashmap-you","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/java-zhongsynchronizedmap-heconcurrenthashmap-you\/","title":{"rendered":"Java\u4e2dSynchronizedMap\u548cConcurrentHashMap\u6709\u4ec0\u4e48\u533a\u522b?"},"content":{"rendered":"<p>SynchronizedMap \u4e00\u6b21\u9501\u4f4f\u6574\u5f20\u8868\u6765\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168\uff0c\u6240\u4ee5\u6bcf\u6b21\u53ea\u80fd\u6709\u4e00\u4e2a\u7ebf\u7a0b\u6765\u8bbf\u95ee map\u3002<br \/>\n1\u3001 ConcurrentHashMap \u4f7f\u7528\u5206\u6bb5\u9501\u6765\u4fdd\u8bc1\u5728\u591a\u7ebf\u7a0b\u4e0b\u7684\u6027\u80fd\u3002<br \/>\nConcurrentHashMap \u4e2d\u5219\u662f\u4e00\u6b21\u9501\u4f4f\u4e00\u4e2a\u6876\u3002ConcurrentHashMap \u9ed8\u8ba4\u5c06 hash\u8868\u5206\u4e3a 16 \u4e2a\u6876\uff0c\u8bf8\u5982 get\uff0cput\uff0cremove \u7b49\u5e38\u7528\u64cd\u4f5c\u53ea\u9501\u5f53\u524d\u9700\u8981\u7528\u5230\u7684\u6876\u3002\u8fd9\u6837\uff0c\u539f\u6765\u53ea\u80fd\u4e00\u4e2a\u7ebf\u7a0b\u8fdb\u5165\uff0c\u73b0\u5728\u5374\u80fd\u540c\u65f6\u6709 16 \u4e2a\u5199\u7ebf\u7a0b\u6267\u884c\uff0c\u5e76\u53d1\u6027\u80fd\u7684\u63d0\u5347\u662f\u663e\u800c\u6613\u89c1\u7684\u3002<br \/>\n2\u3001\u53e6\u5916 ConcurrentHashMap \u4f7f\u7528\u4e86\u4e00\u79cd\u4e0d\u540c\u7684\u8fed\u4ee3\u65b9\u5f0f\u3002\u5728\u8fd9\u79cd\u8fed\u4ee3\u65b9\u5f0f\u4e2d,\u5f53 iterator \u88ab\u521b\u5efa\u540e\u96c6\u5408\u518d\u53d1\u751f\u6539\u53d8\u5c31\u4e0d\u518d\u662f\u629b\u51faConcurrentModificationException\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u5728\u6539\u53d8\u65f6 new \u65b0\u7684\u6570\u636e\u4ece\u800c\u4e0d\u5f71\u54cd\u539f\u6709\u7684\u6570\u636e\uff0citerator \u5b8c\u6210\u540e\u518d\u5c06\u5934\u6307\u9488\u66ff\u6362\u4e3a\u65b0\u7684\u6570\u636e\uff0c\u8fd9\u6837iterator \u7ebf\u7a0b\u53ef\u4ee5\u4f7f\u7528\u539f\u6765\u8001\u7684\u6570\u636e\uff0c\u800c\u5199\u7ebf\u7a0b\u4e5f\u53ef\u4ee5\u5e76\u53d1\u7684\u5b8c\u6210\u6539\u53d8\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SynchronizedMap \u4e00\u6b21\u9501\u4f4f\u6574\u5f20\u8868\u6765\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168\uff0c\u6240\u4ee5\u6bcf\u6b21\u53ea\u80fd\u6709\u4e00\u4e2a\u7ebf\u7a0b\u6765\u8bbf\u95ee map\u3002 1\u3001 C [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[99],"tags":[],"class_list":["post-10631","post","type-post","status-publish","format-standard","hentry","category-javabase"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10631","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\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=10631"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10631\/revisions"}],"predecessor-version":[{"id":10632,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10631\/revisions\/10632"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10631"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}