{"id":156315,"date":"2024-11-02T20:15:26","date_gmt":"2024-11-02T12:15:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/156315\/"},"modified":"2024-11-02T20:15:27","modified_gmt":"2024-11-02T12:15:27","slug":"%e5%88%86%e5%b8%83%e5%bc%8f%e5%94%af%e4%b8%80-id-%e7%9a%84%e5%b9%be%e7%a8%ae%e7%94%9f%e6%88%90%e6%96%b9%e6%a1%88%ef%bc%8c%e4%b8%80%e6%ac%a1%e6%80%a7%e5%85%a8%e6%8e%8c%e6%8f%a1%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/156315\/","title":{"rendered":"\u5206\u5e03\u5f0f\u552f\u4e00 ID \u7684\u5e7e\u7a2e\u751f\u6210\u65b9\u6848\uff0c\u4e00\u6b21\u6027\u5168\u638c\u63e1\uff01"},"content":{"rendered":"<h1 id=\"%e5%88%86%e5%b8%83%e5%bc%8f%e5%94%af%e4%b8%80-id-%e7%9a%84%e5%b9%be%e7%a8%ae%e7%94%9f%e6%88%90%e6%96%b9%e6%a1%88%ef%bc%8c%e4%b8%80%e6%ac%a1%e6%80%a7%e5%85%a8%e6%8e%8c%e6%8f%a1%ef%bc%81-VQICTuxZvt\">\u5206\u5e03\u5f0f\u552f\u4e00 ID \u7684\u5e7e\u7a2e\u751f\u6210\u65b9\u6848\uff0c\u4e00\u6b21\u6027\u5168\u638c\u63e1\uff01<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u552f\u4e00 ID \u7684\u751f\u6210\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f\u7528\u65bc\u6578\u64da\u5eab\u7684\u4e3b\u9375\u3001\u6d88\u606f\u968a\u5217\u7684\u6a19\u8b58\uff0c\u9084\u662f\u7528\u65bc\u7528\u6236\u6703\u8a71\u7684\u6a19\u8b58\u7b26\uff0c\u552f\u4e00 ID \u90fd\u9700\u8981\u5177\u5099\u9ad8\u6548\u6027\u3001\u53ef\u64f4\u5c55\u6027\u548c\u552f\u4e00\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u5e38\u898b\u7684\u5206\u5e03\u5f0f\u552f\u4e00 ID \u751f\u6210\u65b9\u6848\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u9078\u64c7\u6700\u9069\u5408\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"1-uuid%ef%bc%88%e9%80%9a%e7%94%a8%e5%94%af%e4%b8%80%e8%ad%98%e5%88%a5%e7%a2%bc%ef%bc%89-VQICTuxZvt\">1. UUID\uff08\u901a\u7528\u552f\u4e00\u8b58\u5225\u78bc\uff09<\/h2>\n<p>UUID \u662f\u4e00\u7a2e\u6a19\u6e96\u7684\u552f\u4e00\u8b58\u5225\u78bc\u683c\u5f0f\uff0c\u901a\u5e38\u7531 128 \u4f4d\u7d44\u6210\uff0c\u8868\u793a\u70ba 32 \u500b\u5341\u516d\u9032\u5236\u6578\u5b57\u3002UUID \u7684\u751f\u6210\u4e0d\u4f9d\u8cf4\u65bc\u4e2d\u5fc3\u5316\u7684\u670d\u52d9\u5668\uff0c\u56e0\u6b64\u975e\u5e38\u9069\u5408\u5206\u5e03\u5f0f\u7cfb\u7d71\u3002UUID \u7684\u4e3b\u8981\u512a\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u9ad8\u552f\u4e00\u6027\uff1aUUID \u7684\u751f\u6210\u7b97\u6cd5\u78ba\u4fdd\u4e86\u6975\u4f4e\u7684\u78b0\u649e\u6982\u7387\u3002<\/li>\n<li>\u7121\u9700\u4e2d\u592e\u7ba1\u7406\uff1a\u6bcf\u500b\u7bc0\u9ede\u90fd\u53ef\u4ee5\u7368\u7acb\u751f\u6210 UUID\u3002<\/li>\n<\/ul>\n<p>\u7136\u800c\uff0cUUID \u7684\u7f3a\u9ede\u5728\u65bc\u5176\u9577\u5ea6\u8f03\u9577\uff0c\u5c0d\u65bc\u67d0\u4e9b\u61c9\u7528\u4f86\u8aaa\uff0c\u5b58\u5132\u548c\u7d22\u5f15\u6548\u7387\u53ef\u80fd\u8f03\u4f4e\u3002\u4ee5\u4e0b\u662f\u751f\u6210 UUID \u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>import uuid\n\n# \u751f\u6210\u4e00\u500b UUID\nunique_id = uuid.uuid4()\nprint(unique_id)\n<\/code><\/pre>\n<h2 id=\"2-%e9%9b%aa%e8%8a%b1%e7%ae%97%e6%b3%95%ef%bc%88snowflake%ef%bc%89-VQICTuxZvt\">2. \u96ea\u82b1\u7b97\u6cd5\uff08Snowflake\uff09<\/h2>\n<p>\u96ea\u82b1\u7b97\u6cd5\u662f\u4e00\u7a2e\u7531 Twitter \u63d0\u51fa\u7684\u5206\u5e03\u5f0f\u552f\u4e00 ID \u751f\u6210\u65b9\u6848\u3002\u5b83\u751f\u6210\u7684 ID \u662f\u4e00\u500b 64 \u4f4d\u7684\u6574\u6578\uff0c\u901a\u5e38\u7531\u4ee5\u4e0b\u5e7e\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li>1 \u4f4d\u7684\u7b26\u865f\u4f4d<\/li>\n<li>41 \u4f4d\u7684\u6642\u9593\u6233\uff08\u6beb\u79d2\u7d1a\uff09<\/li>\n<li>10 \u4f4d\u7684\u5de5\u4f5c\u6a5f\u5668 ID<\/li>\n<li>12 \u4f4d\u7684\u5e8f\u5217\u865f<\/li>\n<\/ul>\n<p>\u96ea\u82b1\u7b97\u6cd5\u7684\u512a\u9ede\u5728\u65bc\u5176\u751f\u6210\u7684 ID \u662f\u6709\u5e8f\u7684\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u7d22\u5f15\u6027\u80fd\u6709\u5f88\u5927\u5e6b\u52a9\u3002\u4ee5\u4e0b\u662f\u96ea\u82b1\u7b97\u6cd5\u7684\u7c21\u55ae\u5be6\u73fe\uff1a<\/p>\n<pre><code>class Snowflake:\n    def __init__(self, worker_id):\n        self.worker_id = worker_id\n        self.sequence = 0\n        self.last_timestamp = -1\n\n    def _current_millis(self):\n        return int(time.time() * 1000)\n\n    def next_id(self):\n        timestamp = self._current_millis()\n        if timestamp == self.last_timestamp:\n            self.sequence = (self.sequence + 1) &amp; 0xFFF\n        else:\n            self.sequence = 0\n        self.last_timestamp = timestamp\n        return (timestamp &lt;&lt; 22) | (self.worker_id &lt;&lt; 12) | self.sequence\n<\/code><\/pre>\n<h2 id=\"3-%e5%9f%ba%e6%96%bc%e6%99%82%e9%96%93%e6%88%b3%e7%9a%84-id-%e7%94%9f%e6%88%90-VQICTuxZvt\">3. \u57fa\u65bc\u6642\u9593\u6233\u7684 ID \u751f\u6210<\/h2>\n<p>\u53e6\u4e00\u7a2e\u5e38\u898b\u7684\u65b9\u6848\u662f\u57fa\u65bc\u6642\u9593\u6233\u7684 ID \u751f\u6210\u3002\u9019\u7a2e\u65b9\u6cd5\u901a\u5e38\u5c07\u7576\u524d\u6642\u9593\u6233\u8207\u4e00\u500b\u81ea\u589e\u7684\u5e8f\u5217\u865f\u7d50\u5408\u8d77\u4f86\uff0c\u5f62\u6210\u552f\u4e00 ID\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u5728\u65bc\u7c21\u55ae\u6613\u7528\uff0c\u4e14\u751f\u6210\u7684 ID \u5177\u6709\u6642\u9593\u9806\u5e8f\u6027\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u65bc\u6642\u9593\u6233\u7684 ID \u751f\u6210\u793a\u4f8b\uff1a<\/p>\n<pre><code>import time\n\nclass TimestampIDGenerator:\n    def __init__(self):\n        self.sequence = 0\n\n    def next_id(self):\n        timestamp = int(time.time() * 1000)\n        unique_id = f\"{timestamp}-{self.sequence}\"\n        self.sequence += 1\n        return unique_id\n<\/code><\/pre>\n<h2 id=\"4-redis-%e8%87%aa%e5%a2%9e-id-VQICTuxZvt\">4. Redis \u81ea\u589e ID<\/h2>\n<p>\u4f7f\u7528 Redis \u7684\u81ea\u589e\u529f\u80fd\u4e5f\u662f\u4e00\u7a2e\u6d41\u884c\u7684\u751f\u6210\u552f\u4e00 ID \u7684\u65b9\u6cd5\u3002\u9019\u7a2e\u65b9\u6cd5\u4f9d\u8cf4\u65bc Redis \u7684\u539f\u5b50\u6027\u64cd\u4f5c\uff0c\u78ba\u4fdd\u6bcf\u6b21\u751f\u6210\u7684 ID \u90fd\u662f\u552f\u4e00\u7684\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u5728\u65bc\u7c21\u55ae\u4e14\u9ad8\u6548\uff0c\u7279\u5225\u9069\u5408\u9700\u8981\u9ad8\u4e26\u767c\u7684\u5834\u666f\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 Redis \u751f\u6210\u552f\u4e00 ID \u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import redis\n\nr = redis.Redis()\n\ndef generate_id():\n    return r.incr('unique_id')\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-VQICTuxZvt\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u9078\u64c7\u5206\u5e03\u5f0f\u552f\u4e00 ID \u751f\u6210\u65b9\u6848\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u9700\u6c42\u4f86\u9032\u884c\u9078\u64c7\u3002UUID \u63d0\u4f9b\u4e86\u9ad8\u552f\u4e00\u6027\uff0c\u4f46\u5728\u5b58\u5132\u4e0a\u53ef\u80fd\u4e0d\u5920\u9ad8\u6548\uff1b\u96ea\u82b1\u7b97\u6cd5\u5247\u5728\u6027\u80fd\u548c\u6709\u5e8f\u6027\u4e0a\u8868\u73fe\u512a\u7570\uff1b\u57fa\u65bc\u6642\u9593\u6233\u7684 ID \u751f\u6210\u65b9\u6cd5\u7c21\u55ae\u6613\u7528\uff1b\u800c Redis \u81ea\u589e ID \u5247\u9069\u5408\u9ad8\u4e26\u767c\u5834\u666f\u3002\u6839\u64da\u4e0d\u540c\u7684\u9700\u6c42\uff0c\u9078\u64c7\u5408\u9069\u7684\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u591a\u7a2e\u5206\u5e03\u5f0f\u552f\u4e00 ID \u751f\u6210\u65b9\u6848\uff0c\u5168\u9762\u638c\u63e1\u6280\u8853\u7d30\u7bc0\u8207\u61c9\u7528\uff0c\u63d0\u5347\u7cfb\u7d71\u6548\u7387\u8207\u53ef\u9760\u6027\uff01<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-156315","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156315","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=156315"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156315\/revisions"}],"predecessor-version":[{"id":156316,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156315\/revisions\/156316"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=156315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=156315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=156315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}