{"id":38708,"date":"2023-12-11T14:45:16","date_gmt":"2023-12-11T06:45:16","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=38708"},"modified":"2023-12-11T14:45:16","modified_gmt":"2023-12-11T06:45:16","slug":"%e8%af%b7%e4%bd%a0%e4%bb%8b%e7%bb%8d%e4%b8%80%e4%b8%8b%ef%bc%8c%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b9%90%e8%a7%82%e9%94%81%e5%92%8c%e6%82%b2%e8%a7%82%e9%94%81","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e8%af%b7%e4%bd%a0%e4%bb%8b%e7%bb%8d%e4%b8%80%e4%b8%8b%ef%bc%8c%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b9%90%e8%a7%82%e9%94%81%e5%92%8c%e6%82%b2%e8%a7%82%e9%94%81\/","title":{"rendered":"\u8bf7\u4f60\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u6570\u636e\u5e93\u4e50\u89c2\u9501\u548c\u60b2\u89c2\u9501"},"content":{"rendered":"

“`” \u8003\u5bdf\u70b9\uff1a\u6570\u636e\u5e93<\/p>\n

\u00a0<\/p>\n

\u60b2\u89c2\u9501<\/p>\n

\u60b2\u89c2\u9501\uff08Pessimistic Lock\uff09\uff0c\u987e\u540d\u601d\u4e49\uff0c\u5c31\u662f\u5f88\u60b2\u89c2\uff0c\u6bcf\u6b21\u53bb\u62ff\u6570\u636e\u7684\u65f6\u5019\u90fd\u8ba4\u4e3a\u522b\u4eba\u4f1a\u4fee\u6539\uff0c\u6240\u4ee5\u6bcf\u6b21\u5728\u62ff\u6570\u636e\u7684\u65f6\u5019\u90fd\u4f1a\u4e0a\u9501\uff0c\u8fd9\u6837\u522b\u4eba\u60f3\u62ff\u8fd9\u4e2a\u6570\u636e\u5c31\u4f1ablock\u76f4\u5230\u5b83\u62ff\u5230\u9501\u3002\u60b2\u89c2\u9501\uff1a\u5047\u5b9a\u4f1a\u53d1\u751f\u5e76\u53d1\u51b2\u7a81\uff0c\u5c4f\u853d\u4e00\u5207\u53ef\u80fd\u8fdd\u53cd\u6570\u636e\u5b8c\u6574\u6027\u7684\u64cd\u4f5c\u3002<\/p>\n

Java synchronized \u5c31\u5c5e\u4e8e\u60b2\u89c2\u9501\u7684\u4e00\u79cd\u5b9e\u73b0\uff0c\u6bcf\u6b21\u7ebf\u7a0b\u8981\u4fee\u6539\u6570\u636e\u65f6\u90fd\u5148\u83b7\u5f97\u9501\uff0c\u4fdd\u8bc1\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u80fd\u64cd\u4f5c\u6570\u636e\uff0c\u5176\u4ed6\u7ebf\u7a0b\u5219\u4f1a\u88abblock\u3002<\/p>\n

\u4e50\u89c2\u9501<\/p>\n

\u4e50\u89c2\u9501\uff08Optimistic Lock\uff09\uff0c\u987e\u540d\u601d\u4e49\uff0c\u5c31\u662f\u5f88\u4e50\u89c2\uff0c\u6bcf\u6b21\u53bb\u62ff\u6570\u636e\u7684\u65f6\u5019\u90fd\u8ba4\u4e3a\u522b\u4eba\u4e0d\u4f1a\u4fee\u6539\uff0c\u6240\u4ee5\u4e0d\u4f1a\u4e0a\u9501\uff0c\u4f46\u662f\u5728\u63d0\u4ea4\u66f4\u65b0\u7684\u65f6\u5019\u4f1a\u5224\u65ad\u4e00\u4e0b\u5728\u6b64\u671f\u95f4\u522b\u4eba\u6709\u6ca1\u6709\u53bb\u66f4\u65b0\u8fd9\u4e2a\u6570\u636e\u3002\u4e50\u89c2\u9501\u9002\u7528\u4e8e\u8bfb\u591a\u5199\u5c11\u7684\u5e94\u7528\u573a\u666f\uff0c\u8fd9\u6837\u53ef\u4ee5\u63d0\u9ad8\u541e\u5410\u91cf\u3002<\/p>\n

\u4e50\u89c2\u9501\uff1a\u5047\u8bbe\u4e0d\u4f1a\u53d1\u751f\u5e76\u53d1\u51b2\u7a81\uff0c\u53ea\u5728\u63d0\u4ea4\u64cd\u4f5c\u65f6\u68c0\u67e5\u662f\u5426\u8fdd\u53cd\u6570\u636e\u5b8c\u6574\u6027\u3002<\/p>\n

\u4e50\u89c2\u9501\u4e00\u822c\u6765\u8bf4\u6709\u4ee5\u4e0b2\u79cd\u65b9\u5f0f\uff1a<\/p>\n

\u4f7f\u7528\u6570\u636e\u7248\u672c\uff08Version\uff09\u8bb0\u5f55\u673a\u5236\u5b9e\u73b0\uff0c\u8fd9\u662f\u4e50\u89c2\u9501\u6700\u5e38\u7528\u7684\u4e00\u79cd\u5b9e\u73b0\u65b9\u5f0f\u3002\u4f55\u8c13\u6570\u636e\u7248\u672c\uff1f\u5373\u4e3a\u6570\u636e\u589e\u52a0\u4e00\u4e2a\u7248\u672c\u6807\u8bc6\uff0c\u4e00\u822c\u662f\u901a\u8fc7\u4e3a\u6570\u636e\u5e93\u8868\u589e\u52a0\u4e00\u4e2a\u6570\u5b57\u7c7b\u578b\u7684 \u201cversion\u201d \u5b57\u6bb5\u6765\u5b9e\u73b0\u3002\u5f53\u8bfb\u53d6\u6570\u636e\u65f6\uff0c\u5c06version\u5b57\u6bb5\u7684\u503c\u4e00\u540c\u8bfb\u51fa\uff0c\u6570\u636e\u6bcf\u66f4\u65b0\u4e00\u6b21\uff0c\u5bf9\u6b64version\u503c\u52a0\u4e00\u3002\u5f53\u6211\u4eec\u63d0\u4ea4\u66f4\u65b0\u7684\u65f6\u5019\uff0c\u5224\u65ad\u6570\u636e\u5e93\u8868\u5bf9\u5e94\u8bb0\u5f55\u7684\u5f53\u524d\u7248\u672c\u4fe1\u606f\u4e0e\u7b2c\u4e00\u6b21\u53d6\u51fa\u6765\u7684version\u503c\u8fdb\u884c\u6bd4\u5bf9\uff0c\u5982\u679c\u6570\u636e\u5e93\u8868\u5f53\u524d\u7248\u672c\u53f7\u4e0e\u7b2c\u4e00\u6b21\u53d6\u51fa\u6765\u7684version\u503c\u76f8\u7b49\uff0c\u5219\u4e88\u4ee5\u66f4\u65b0\uff0c\u5426\u5219\u8ba4\u4e3a\u662f\u8fc7\u671f\u6570\u636e\u3002<\/p>\n

\u4f7f\u7528\u65f6\u95f4\u6233\uff08timestamp\uff09\u3002\u4e50\u89c2\u9501\u5b9a\u7684\u7b2c\u4e8c\u79cd\u5b9e\u73b0\u65b9\u5f0f\u548c\u7b2c\u4e00\u79cd\u5dee\u4e0d\u591a\uff0c\u540c\u6837\u662f\u5728\u9700\u8981\u4e50\u89c2\u9501\u63a7\u5236\u7684table\u4e2d\u589e\u52a0\u4e00\u4e2a\u5b57\u6bb5\uff0c\u540d\u79f0\u65e0\u6240\u8c13\uff0c\u5b57\u6bb5\u7c7b\u578b\u4f7f\u7528\u65f6\u95f4\u6233\uff08timestamp\uff09, \u548c\u4e0a\u9762\u7684version\u7c7b\u4f3c\uff0c\u4e5f\u662f\u5728\u66f4\u65b0\u63d0\u4ea4\u7684\u65f6\u5019\u68c0\u67e5\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u6570\u636e\u7684\u65f6\u95f4\u6233\u548c\u81ea\u5df1\u66f4\u65b0\u524d\u53d6\u5230\u7684\u65f6\u95f4\u6233\u8fdb\u884c\u5bf9\u6bd4\uff0c\u5982\u679c\u4e00\u81f4\u5219OK\uff0c\u5426\u5219\u5c31\u662f\u7248\u672c\u51b2\u7a81\u3002<\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” \u8003\u5bdf\u70b9\uff1a\u6570\u636e\u5e93 \u00a0 \u60b2\u89c2\u9501 \u60b2\u89c2\u9501\uff08Pessimistic Lock\uff09\uff0c\u987e\u540d\u601d […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-38708","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/38708","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=38708"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/38708\/revisions"}],"predecessor-version":[{"id":38709,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/38708\/revisions\/38709"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=38708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=38708"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=38708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}