{"id":3975,"date":"2019-03-09T21:08:34","date_gmt":"2019-03-09T13:08:34","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=3975"},"modified":"2019-07-24T11:01:17","modified_gmt":"2019-07-24T03:01:17","slug":"5-%e5%a4%a7%e5%88%86%e5%b8%83%e5%bc%8f-id-%e7%94%9f%e6%88%90%e5%99%a8%e4%bc%98%e7%bc%ba%e7%82%b9%e7%ae%80%e5%8d%95%e5%af%b9%e6%af%94","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=3975","title":{"rendered":"5 \u5927\u5206\u5e03\u5f0f ID \u751f\u6210\u5668\u4f18\u7f3a\u70b9\u7b80\u5355\u5bf9\u6bd4"},"content":{"rendered":"<p>\u9996\u9009\uff0c\u4e0d\u7ba1\u662f\u4e0d\u662f\u5206\u5e03\u5f0f\u7cfb\u7edf\uff0c\u90fd\u6709 ID \u552f\u4e00\u7684\u4f7f\u7528\u573a\u666f\u3002\u800c\u5728\u5206\u5e03\u5f0f\u573a\u666f\u4e0b\uff0c\u5bf9 ID \u7684\u552f\u4e00\u6027\u8981\u6c42\u66f4\u4e25\u683c\uff01<\/p>\n<p>\u5e38\u89c1\u7684\uff0c\u6211\u4eec\u4e0a\u6dd8\u5b9d\u4e70\u4e1c\u897f\u7684\u8ba2\u5355 ID\uff0c\u5c31\u662f\u4e00\u79cd\u5206\u5e03\u5f0f ID\u3002\u6dd8\u5b9d\uff0c\u524d\u671f\u7684\u8ba2\u5355 id \u597d\u50cf\u662f 14 \u4f4d\uff0c\u73b0\u5728\u597d\u50cf\u5df2\u7ecf\u662f 16 \u4f4d\uff0c\u6216\u8005 18 \u4f4d\u4e86\u5427\u3002<\/p>\n<p><img decoding=\"async\" style=\"width: 1458px;height: 1079px\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcgy1g0wurc93ctj214i0tz76a.jpg\" alt=\"\u5e38\u89c1\u7684\u5206\u5e03\u5f0fID\u751f\u6210\u65b9\u6848\"><\/p>\n<p>\u4ee5\u6211\u4eec\u516c\u53f8\u7684\u8ba2\u5355 ID \u4e3a\u4f8b\uff0c\u5b83\u6709\u8fd9\u51e0\u4e2a\u7279\u70b9\u3002<\/p>\n<ol>\n<li>ID \u5168\u5c40\u552f\u4e00\uff0c\u4e0d\u4f1a\u91cd\u590d<\/li>\n<li>ID \u7684\u589e\u957f\u652f\u6301\u5206\u5e03\u5f0f\u4f7f\u7528<\/li>\n<li>ID \u8981\u65b9\u4fbf\u597d\u8bb0\uff0c\u5e76\u4e14\u901a\u8fc7 ID \u80fd\u5927\u6982\u770b\u51fa\u662f\u4ec0\u4e48\u65f6\u95f4\u521b\u5efa\u7684\u8ba2\u5355<\/li>\n<li>\u8ba2\u5355 ID \u6700\u597d\u8fd8\u80fd\u8ffd\u8e2a\u5230\u9500\u552e\u5458\uff0c\u6216\u4e0b\u5355\u7528\u6237\u7684 ID \u7b49<\/li>\n<li>\u589e\u957f\u7684\u8ba2\u5355 ID \u8fd8\u4e0d\u80fd\u8ba9\u7ade\u4e89\u5bf9\u624b\u53d1\u73b0\u4f60\u6bcf\u5929\u7684\u4e1a\u52a1\u91cf<\/li>\n<\/ol>\n<p>\u9488\u5bf9\u7b2c\u4e94\u9879\uff0c\u6d45\u663e\u7684\u95ee\u9898\u5c31\u662f\u4e0d\u80fd\u8ba9\u975e\u6838\u5fc3\u8fd0\u8425\u8005\u77e5\u9053\u6bcf\u5929\u7684\u8ba2\u5355\u91cf\u7b49\u4fe1\u606f\u3002\u5982\u679c ID \u662f\u8fde\u7eed\u7684\uff0c\u6076\u610f\u7528\u6237\u7684\u6252\u53d6\u5de5\u4f5c\u5c31\u975e\u5e38\u5bb9\u6613\u505a\u4e86\uff0c\u76f4\u63a5\u6309\u7167\u987a\u5e8f\u4e0b\u8f7d\u6307\u5b9a URL \u5373\u53ef\uff1b\u5982\u679c\u662f\u8ba2\u5355\u53f7\u5c31\u66f4\u5371\u9669\u4e86\uff0c\u7ade\u5bf9\u53ef\u4ee5\u76f4\u63a5\u77e5\u9053\u6211\u4eec\u4e00\u5929\u7684\u8ba2\u5355\u91cf\u3002\u6240\u4ee5\u5728\u4e00\u4e9b\u5e94\u7528\u573a\u666f\u4e0b\uff0c\u4f1a\u9700\u8981 ID \u65e0\u89c4\u5219\u3001\u4e0d\u89c4\u5219\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u8bbe\u8ba1\u4e00\u4e2a\u597d\u7684\u5206\u5e03\u5f0f ID \u751f\u6210\u5668\u5e76\u4e0d\u662f\u90a3\u4e48\u5bb9\u6613\u7684\u3002\u4e8e\u662f\u7f51\u4e0a\u4e5f\u6709\u5f88\u591a\u5927\u516c\u53f8\u5f00\u6e90\u8fd9\u7c7b\u5206\u5e03\u5f0f ID \u751f\u6210\u5668\u3002\u6211\u4eca\u5929\u5c31\u62bd\u4e2a\u65f6\u95f4\uff0c\u626f\u4e00\u626f\u5b83\u4eec\u4e4b\u95f4\u7684\u4e0d\u540c\u70b9\u5427\u3002<\/p>\n<p><img decoding=\"async\" style=\"width: 362px;height: 348px\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcgy1g0wuo3mwduj20a209ognx.jpg\" alt=\"\u5206\u5e03\u5f0f ID \u7684\u7279\u70b9\"><\/p>\n<p>\u8bf4\u5230\uff0c\u5206\u5e03\u5f0f ID\uff0c\u6211\u4eec\u9996\u9009\u60f3\u5230\u7684\u53ef\u80fd\u5c31\u662f UUID \u4e86\u3002<\/p>\n<p>UUID (Universally Unique Identifier) \u7684\u6807\u51c6\u578b\u5f0f\u5305\u542b 32 \u4e2a 16 \u8fdb\u5236\u6570\u5b57\uff0c\u4ee5\u8fde\u5b57\u53f7\u5206\u4e3a\u4e94\u6bb5\uff0c\u5f62\u5f0f\u4e3a 8-4-4-4-12 \u7684 36 \u4e2a\u5b57\u7b26\uff0c\u793a\u4f8b\uff1a550e8400-e29b-41d4-a716-446655440000\uff0c\u5230\u76ee\u524d\u4e3a\u6b62\u4e1a\u754c\u4e00\u5171\u6709 5 \u79cd\u65b9\u5f0f\u751f\u6210 UUID\u3002<\/p>\n<p>UUID \u7684\u4f18\u70b9\uff1a\u6027\u80fd\u975e\u5e38\u9ad8\uff1a\u672c\u5730\u751f\u6210\uff0c\u6ca1\u6709\u7f51\u7edc\u6d88\u8017\u3002<\/p>\n<p>UUID \u7684\u7f3a\u70b9\uff1a<\/p>\n<ol>\n<li>\u4e0d\u6613\u4e8e\u5b58\u50a8\uff1aUUID \u592a\u957f\uff0c16 \u5b57\u8282 128 \u4f4d\uff0c\u901a\u5e38\u4ee5 36 \u957f\u5ea6\u7684\u5b57\u7b26\u4e32\u8868\u793a\uff0c\u5f88\u591a\u573a\u666f\u4e0d\u9002\u7528\u3002<\/li>\n<li>\u4fe1\u606f\u4e0d\u5b89\u5168\uff1a\u57fa\u4e8e MAC \u5730\u5740\u751f\u6210 UUID \u7684\u7b97\u6cd5\u53ef\u80fd\u4f1a\u9020\u6210 MAC \u5730\u5740\u6cc4\u9732\uff0c\u8fd9\u4e2a\u6f0f\u6d1e\u66fe\u88ab\u7528\u4e8e\u5bfb\u627e\u6885\u4e3d\u838e\u75c5\u6bd2\u7684\u5236\u4f5c\u8005\u4f4d\u7f6e\u3002<\/li>\n<li>ID \u4f5c\u4e3a\u4e3b\u952e\u65f6\u5728\u7279\u5b9a\u7684\u73af\u5883\u4f1a\u5b58\u5728\u4e00\u4e9b\u95ee\u9898\uff0c\u6bd4\u5982\u505a DB \u4e3b\u952e\u7684\u573a\u666f\u4e0b\uff0cUUID \u5c31\u975e\u5e38\u4e0d\u9002\u7528\u3002MySQL \u5b98\u65b9\u6709\u660e\u786e\u7684\u5efa\u8bae\u4e3b\u952e\u8981\u5c3d\u91cf\u8d8a\u77ed\u8d8a\u597d\uff0c36 \u4e2a\u5b57\u7b26\u957f\u5ea6\u7684 UUID \u4e0d\u7b26\u5408\u8981\u6c42\uff1bUUID \u8fd8\u5bf9 MySQL \u7d22\u5f15\u4e0d\u5229\uff0c\u5982\u679c\u4f5c\u4e3a\u6570\u636e\u5e93\u4e3b\u952e\uff0c\u5728 InnoDB \u5f15\u64ce\u4e0b\uff0cUUID \u7684\u65e0\u5e8f\u6027\u53ef\u80fd\u4f1a\u5f15\u8d77\u6570\u636e\u4f4d\u7f6e\u9891\u7e41\u53d8\u52a8\uff0c\u4e25\u91cd\u5f71\u54cd\u6027\u80fd\u3002<\/li>\n<\/ol>\n<p>snowflake<\/p>\n<p>snowflake \u6211\u5c31\u4e0d\u5728\u4ecb\u7ecd\u4e86\uff0c\u6211\u76f4\u63a5\u8bf4\u5b83\u7684\u4f18\u70b9\uff1a<\/p>\n<ul>\n<li>\u6beb\u79d2\u6570\u5728\u9ad8\u4f4d\uff0c\u81ea\u589e\u5e8f\u5217\u5728\u4f4e\u4f4d\uff0c\u6574\u4e2aID\u90fd\u662f\u8d8b\u52bf\u9012\u589e\u7684\u3002<\/li>\n<li>\u4e0d\u4f9d\u8d56\u6570\u636e\u5e93\u7b49\u7b2c\u4e09\u65b9\u7cfb\u7edf\uff0c\u4ee5\u670d\u52a1\u7684\u65b9\u5f0f\u90e8\u7f72\uff0c\u7a33\u5b9a\u6027\u66f4\u9ad8\uff0c\u751f\u6210ID\u7684\u6027\u80fd\u4e5f\u662f\u975e\u5e38\u9ad8\u7684\u3002<\/li>\n<li>\u53ef\u4ee5\u6839\u636e\u81ea\u8eab\u4e1a\u52a1\u7279\u6027\u5206\u914dbit\u4f4d\uff0c\u975e\u5e38\u7075\u6d3b\u3002<\/li>\n<\/ul>\n<p>\u7f3a\u70b9\uff1a<\/p>\n<ul>\n<li>\u5f3a\u4f9d\u8d56\u673a\u5668\u65f6\u949f\uff0c\u5982\u679c\u673a\u5668\u4e0a\u65f6\u949f\u56de\u62e8\uff0c\u4f1a\u5bfc\u81f4\u53d1\u53f7\u91cd\u590d\u6216\u8005\u670d\u52a1\u4f1a\u5904\u4e8e\u4e0d\u53ef\u7528\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p>MongDB \u7684 ObjectID \u53ef\u4ee5\u7b97\u4f5c\u662f\u548csnowflake\u7c7b\u4f3c\u65b9\u6cd5\uff0c\u901a\u8fc7\u201c\u65f6\u95f4+\u673a\u5668\u7801+pid+inc\u201d\u517112\u4e2a\u5b57\u8282\uff0c\u901a\u8fc74+3+2+3\u7684\u65b9\u5f0f\u6700\u7ec8\u6807\u8bc6\u6210\u4e00\u4e2a24\u957f\u5ea6\u7684\u5341\u516d\u8fdb\u5236\u5b57\u7b26\u3002<\/p>\n<p>\u7f8e\u56e2\u5f00\u6e90\u7684Leaf<\/p>\n<p>\u652f\u6301\u591a\u79cd\u4e0d\u540c\u6a21\u5f0f\u7684\u751f\u6210\u7b56\u7565<\/p>\n<p>\u53f7\u6bb5\u6a21\u5f0f\uff1a\u8be5\u6a21\u5f0f\u9700\u8981\u5efa DB \u8868, \u9700\u8981\u6709\u4e13\u95e8\u7684\u670d\u52a1\u6765\u63d0\u4f9b\u83b7\u53d6 id \u7684\u63a5\u53e3, \u5b58\u5728\u7f51\u7edc\u5ef6\u8fdf<br \/>\nSnowflake \u6a21\u5f0f\uff1a\u4e3a\u4e86\u8ffd\u6c42\u66f4\u9ad8\u7684\u6027\u80fd\uff0c\u9700\u8981\u901a\u8fc7 RPC Server \u6765\u90e8\u7f72 Leaf \u670d\u52a1\uff0c\u90a3\u4ec5\u9700\u8981\u5f15\u5165 leaf-core \u7684\u5305\uff0c\u628a\u751f\u6210 ID \u7684 API \u5c01\u88c5\u5230\u6307\u5b9a\u7684 RPC \u6846\u67b6\u4e2d\u5373\u53ef<\/p>\n<p>\u7f3a\u70b9\uff0c\u53ef\u80fd\u5c31\u662f\u76f8\u5bf9\u6765\u8bf4\u6bd4\u8f83\u590d\u6742\u3002<\/p>\n<p>sharding-jdbc<\/p>\n<p>sharding-jdbc \u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u4e3b\u952e\u751f\u6210\u7ec4\u4ef6\u3002\u5b83\u7684\u7279\u70b9\u662f\u7b80\u5355\u6613\u7528\uff0c\u53ef\u4ee5\u6307\u5b9a workerId \u6216\u8005\u4e0d\u6307\u5b9a, \u76f4\u63a5\u901a\u8fc7 jar \u7684\u65b9\u5f0f\u5f15\u5165\u5373\u53ef\u3002\u770b\u5b83\u7684\u540d\u5b57\u5c31\u77e5\u9053\uff0c\u5b83\u9700\u8981 DB \u652f\u6301\u3002<\/p>\n<p>uid-generator<\/p>\n<p>uid-generator \u662f\u767e\u5ea6\u5f00\u6e90\u7684\u4e00\u4e2a\u5206\u5e03\u5f0f ID \u751f\u6210\u5668\u3002\u9700\u8981\u5efa DB \u8868, \u9700\u8981\u6709\u4e13\u95e8\u7684\u670d\u52a1\u6765\u63d0\u4f9b\u83b7\u53d6 id \u7684\u63a5\u53e3, \u5b58\u5728\u7f51\u7edc\u5ef6\u8fdf\u3002<\/p>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=3975\">5 \u5927\u5206\u5e03\u5f0f ID \u751f\u6210\u5668\u4f18\u7f3a\u70b9\u7b80\u5355\u5bf9\u6bd4<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u9996\u9009\uff0c\u4e0d\u7ba1\u662f\u4e0d\u662f\u5206\u5e03\u5f0f\u7cfb\u7edf\uff0c\u90fd\u6709 ID \u552f\u4e00\u7684\u4f7f\u7528\u573a\u666f\u3002\u800c\u5728\u5206\u5e03\u5f0f\u573a\u666f\u4e0b\uff0c\u5bf9 ID \u7684\u552f\u4e00\u6027\u8981\u6c42\u66f4\u4e25\u683c\uff01 \u5e38\u89c1 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[481,1726,1410,762,216],"class_list":["post-3975","post","type-post","status-publish","format-standard","hentry","category-java","tag-fastdfs","tag-uidgenerator","tag-uuid","tag-762","tag-216"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3975"}],"version-history":[{"count":3,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3975\/revisions"}],"predecessor-version":[{"id":4439,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3975\/revisions\/4439"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}