{"id":1994,"date":"2023-04-01T11:27:49","date_gmt":"2023-04-01T03:27:49","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1994"},"modified":"2023-04-22T07:40:40","modified_gmt":"2023-04-21T23:40:40","slug":"playing-redis-how-to-realize-jd-sign-in-and-get-jingdou","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/04\/01\/playing-redis-how-to-realize-jd-sign-in-and-get-jingdou\/","title":{"rendered":"\u73a9\u8f6cRedis &#8211; \u4eac\u4e1c\u7b7e\u5230\u9886\u4eac\u8c46\u5982\u4f55\u5b9e\u73b0"},"content":{"rendered":"<h2>\u4eac\u4e1c\u7b7e\u5230\u65e5\u5386\u7684\u4ea7\u54c1\u903b\u8f91<\/h2>\n<ul>\n<li>\u7b7e\u5230\u65e5\u5386\u4ec5\u5c55\u793a\u5f53\u6708\u7b7e\u5230\u6570\u636e<\/li>\n<li>\u7b7e\u5230\u65e5\u5386\u9700\u5c55\u793a\u6700\u8fd1\u8fde\u7eed\u7b7e\u5230\u5929\u6570<\/li>\n<li>\n<ul>\n<li>\u5047\u8bbe\u5f53\u524d\u65e5\u671f\u662f20200618\uff0c\u4e1420200616\u672a\u7b7e\u5230<\/li>\n<\/ul>\n<\/li>\n<li>\n<ul>\n<li>\u82e520200617\u5df2\u7b7e\u5230\u4e140618\u672a\u7b7e\u5230\uff0c\u5219\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u4e3a1<\/li>\n<\/ul>\n<\/li>\n<li>\n<ul>\n<li>\u82e520200617\u5df2\u7b7e\u5230\u4e140618\u5df2\u7b7e\u5230\uff0c\u5219\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u4e3a2<\/li>\n<\/ul>\n<\/li>\n<li>\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u8d8a\u591a\uff0c\u5956\u52b1\u8d8a\u5927<\/li>\n<li>\u6240\u6709\u7528\u6237\u5747\u53ef\u7b7e\u5230<\/li>\n<li>\n<ul>\n<li>\u622a\u81f32020\u5e743\u670831\u65e5\u768412\u4e2a\u6708\uff0c\u4eac\u4e1c\u5e74\u5ea6\u6d3b\u8dc3\u7528\u6237\u65703.87\u4ebf\uff0c\u540c\u6bd4\u589e\u957f24.8%\uff0c\u73af\u6bd4\u589e\u957f\u8d852500\u4e07\uff0c\u6b64\u5916\uff0c2020\u5e743\u6708\u79fb\u52a8\u7aef\u65e5\u5747\u6d3b\u8dc3\u7528\u6237\u6570\u540c\u6bd4\u589e\u957f46%<\/li>\n<\/ul>\n<\/li>\n<li>\n<ul>\n<li>\u5047\u8bbe10%\u5de6\u53f3\u7684\u7528\u6237\u53c2\u4e0e\u7b7e\u5230\uff0c\u7b7e\u5230\u7528\u6237\u4e5f\u9ad8\u8fbe3\u5343\u4e07<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><!-- more --><\/p>\n<h2>\u4f20\u7edf\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e0b\u7684\u5b9e\u73b0\u65b9\u6848<\/h2>\n<h3>MySQL\u8868\u8bbe\u8ba1<\/h3>\n<h4>\u8868\u8bbe\u8ba1\u521d\u7ea7\u73a9\u6cd5\uff0880%\u7684\u4eba\u53ea\u4f1a\u8fd9\u4e48\u73a9\uff09<\/h4>\n<p>\u65b0\u5efa\u4e00\u5f20\u201c\u7528\u6237\u7b7e\u5230\u8bb0\u5f55\u8868\uff08user_sign\uff09\u201d\uff0c\u6838\u5fc3\u5b57\u6bb5\u5982\u4e0b\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">\u5b57\u6bb5\u82f1\u6587\u540d<\/th>\n<th style=\"text-align: left;\">\u5b57\u6bb5\u4e2d\u6587\u540d<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\">keyid<\/td>\n<td style=\"text-align: left;\">\u6570\u636e\u8868\u4e3b\u952e\uff08AUTO_INCREMENT\uff09<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">user_key<\/td>\n<td style=\"text-align: left;\">\u4eac\u4e1c\u7528\u6237ID\uff08\u5168\u5c40\u552f\u4e00\uff09<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">sign_date<\/td>\n<td style=\"text-align: left;\">\u7b7e\u5230\u65e5\u671f\uff08\u598220200618\uff09<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">sign_count<\/td>\n<td style=\"text-align: left;\">\u8fde\u7eed\u7b7e\u5230\u5929\u6570<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li>\u7528\u6237\u7b7e\u5230\uff1a\u5f80\u6b64\u8868\u63d2\u5165\u4e00\u6761\u6570\u636e\uff0c\u5e76\u66f4\u65b0\u8fde\u7eed\u7b7e\u5230\u5929\u6570<\/li>\n<li>\u5f53\u65e5\u91cd\u590d\u7b7e\u5230\uff1a\u6570\u636e\u4e0d\u65b0\u589e<\/li>\n<li>\u67e5\u8be2\u5f53\u6708\u7b7e\u5230\u60c5\u51b5\uff1a\u67e5\u8be21\u53f7\u81f3\u4eca\u5929\u7684\u7b7e\u5230\u6570\u636e<\/li>\n<li>\u67e5\u8be2\u8fde\u7eed\u7b7e\u5230\u5929\u6570\uff1a\u67e5\u8be2\u201csign_date=\u4eca\u5929\u201d\u7684\u6570\u636e\uff0c\u4eca\u5929\u65e0\u6570\u636e\u5219\u67e5\u8be2\u201csign_date=\u6628\u5929\u201d\u7684\u6570\u636e<\/li>\n<\/ul>\n<pre><code class=\"language-sql\"># \u67e5\u8be2\u7528\u6237\u5c0f\u4e1c\uff08user_key=&quot;20200618-xxxx-xxxx-xxxx-xxxxxxxxxxxx&quot;\uff09\u7684\u8fde\u7eed\u7b7e\u5230\u5929\u6570\n# \u6ce8\u610f\uff1asign_date BETWEEN &#039;2020-06-17&#039; AND &#039;2020-06-18&#039; \u5173\u8054\u7684\u65f6\u95f4\u70b9\u662f0\u65f60\u52060\u79d2\n# \u6240\u4ee5\u6b64\u5904SQL\u7684\u65f6\u95f4\u70b9\u5fc5\u987b\u5e26\u4e0a\u65f6\u5206\u79d2\n\nSELECT\n    sign_count\nFROM\n    user_sign\nWHERE\n    user_key = &#039;20200618-xxxx-xxxx-xxxx-xxxxxxxxxxxx&#039;\n    AND sign_date BETWEEN &#039;2020-06-17 00:00:00&#039;\n    AND &#039;2020-06-18 23:59:59&#039;\nORDER BY\n    sign_date DESC\n    LIMIT 1;<\/code><\/pre>\n<p>\u7b7e\u5230\u7528\u6237\u91cf\u8f83\u5c0f\u65f6\u8fd9\u4e48\u8bbe\u8ba1\u6216\u8bb8\u52c9\u5f3a\u80fd\u884c\uff0c\u4f46\u4eac\u4e1c\u8fd9\u4e2a\u4f53\u91cf\u7684\u7528\u6237\uff08\u4f30\u7b973KW\u7b7e\u5230\u7528\u6237\uff0c\u4e00\u5929\u4e00\u6761\u6570\u636e\uff0c\u4e00\u4e2a\u6708\u5c31\u662f9\u4ebf\u6570\u636e\uff09\uff0c\u5373\u4f7f\u6570\u636e\u8868\u6309\u7167\u6708\u4efd\u5206\u8868\uff0c\u540c\u65f6\u6309\u7167\u201c\u7528\u6237ID\u201d\u8fdb\u884chash\u5206\u8868\uff08\u6570\u636e\u8868\u793a\u4f8b\u4e3a<code>user_sign_202006_0<\/code>\uff09\uff0c\u6570\u636e\u5b58\u50a8\u4e5f\u662f\u5de8\u5927\u7684\u6311\u6218\u3002\u5173\u952e\u662f\u6295\u5165\u4ea7\u51fa\u6bd4\u592a\u4f4e\uff0c\u8fd9\u79cd\u65b9\u5f0f\u8fd8\u662fsay goodbye\u5427\u3002<\/p>\n<h4>\u8868\u8bbe\u8ba1\u8fdb\u9636\u73a9\u6cd5\uff08\u6309\u4f4d\u5b58\u50a8\uff0c\u9ad8\u7ea7\u7a0b\u5e8f\u5458\u624d\u4f1a\u7684\u73a9\u6cd5\uff09<\/h4>\n<p>\u521d\u7ea7\u73a9\u6cd5\u4e00\u6761\u7b7e\u5230\u6570\u636e\u4e00\u6761\u8bb0\u5f55\uff0c\u5360\u7528\u4e86\u5927\u91cf\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u6211\u4eec\u53ef\u4ee5\u4ece\u8fd9\u91cc\u4f18\u5316\u4e00\u4e0b\u3002<\/p>\n<ul>\n<li>int\u7c7b\u578b\u536032\u4f4d\uff0c\u8db3\u591f\u5b58\u50a8\u4e00\u4e2a\u6708\u7684\u7b7e\u5230\u8bb0\u5f55<\/li>\n<li>\u5df2\u7b7e\u5230\u5219\u5bf9\u5e94\u4f4d\u5b581\uff0c\u672a\u7b7e\u5230\u5b580<\/li>\n<li>\n<ul>\n<li>\uff08\u6b64\u5904\u7701\u756526\u4e2a0\uff09000101\uff1a\u8868\u793a1\u53f7\u548c3\u53f7\u5df2\u7b7e\u5230<\/li>\n<\/ul>\n<\/li>\n<li>\u4e00\u6761\u6570\u636e\u76f4\u63a5\u5b58\u50a8\u4e00\u4e2a\u6708\u7684\u7b7e\u5230\u8bb0\u5f55\uff0c\u4e0d\u518d\u662f\u5b58\u50a8\u4e00\u5929\u7684\u7b7e\u5230\u8bb0\u5f55<\/li>\n<li>\u8868\u8bbe\u8ba1\u6309\u7528\u6237ID hash\u5206\u8868\uff0c\u65e0\u9700\u6309\u7167\u6708\u4efd\u5206\u8868<\/li>\n<li>\u4f18\u5316\u540e\u7684\u8868\u8bbe\u8ba1\u6838\u5fc3\u5b57\u6bb5\u5982\u4e0b\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-sql\"># \u7528\u6237\u7b7e\u5230\u8bb0\u5f55\u8868user_sign_{h}\n# \u6309\u7167\u7528\u6237ID hash\u5206\u8868\uff0ch\u662fhash\u503c\nCREATE TABLE `user_sign_h` (\n  `keyid` char(42) NOT NULL DEFAULT &#039;&#039; COMMENT &#039;\u4e3b\u952e\uff08\u7b7e\u5230\u6708\u4efd+\u7528\u6237ID\uff09&#039;,\n  `user_key` char(36) NOT NULL DEFAULT &#039;&#039; COMMENT &#039;\u7528\u6237ID&#039;,\n  `sign_month` char(6) NOT NULL DEFAULT &#039;190001&#039; COMMENT &#039;\u7b7e\u5230\u6708\u4efd&#039;,\n  `sign_record` int unsigned NOT NULL DEFAULT &#039;0&#039; COMMENT &#039;\u7b7e\u5230\u8bb0\u5f55&#039;,\n  `sign_count` int unsigned NOT NULL DEFAULT &#039;0&#039; COMMENT &#039;\u8fde\u7eed\u7b7e\u5230\u5929\u6570&#039;,\n  `last_sign_date` char(8) NOT NULL DEFAULT &#039;&#039; COMMENT &#039;\u4e0a\u6b21\u7b7e\u5230\u65e5\u671f&#039;,\n  PRIMARY KEY (`keyid`),\n  KEY `index_user_id` (`user_key`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;<\/code><\/pre>\n<p>\u8868\u8bbe\u8ba1\u6216\u8bb8\u4f60\u6709\u4ee5\u4e0b\u7591\u95ee\uff0c\u5148\u601d\u8003\u4e00\u4e0b\u5427\uff0c\u89e3\u6790\u89c1\u6587\u672bTips\uff1f<\/p>\n<ul>\n<li>\u7528\u6237ID\u4e3a\u4ec0\u4e48\u662f36\u4f4d\u7684UUID\uff0c\u5373\u4f7f\u767e\u4ebf\u7528\u6237\u4e5f\u4ec5\u9700\u898111\u4f4d\u5c31\u591f\u4e86\uff1f<\/li>\n<li>keyid\u4e3a\u4ec0\u4e48\u4e0d\u4f7f\u7528<code>auto_increment<\/code>\u81ea\u589e\uff1f<\/li>\n<\/ul>\n<h3>\u67e5\u8be2\u7b7e\u5230\u60c5\u51b5\u53ca\u7b7e\u5230\u7684\u6280\u672f\u5b9e\u73b0<\/h3>\n<p>\u4ee5\u4e0b\u6280\u672f\u5b9e\u73b0\u57fa\u4e8e\u201c\u8868\u8bbe\u8ba1\u8fdb\u9636\u73a9\u6cd5\uff08\u6309\u4f4d\u5b58\u50a8\uff09\u201d<\/p>\n<blockquote>\n<p>keyid\uff1a\u7531\u7b7e\u5230\u6708\u4efd+\u7528\u6237ID\u751f\u6210\u3002\u5982\u7528\u6237\u5c0f\u4e1c\uff08user_key=&quot;19980618-xxxx-xxxx-xxxx-xxxxxxxxxxxx&quot;\uff09\uff0c\u51762020\u5e746\u6708\u4efd\u7684\u7b7e\u5230\u8bb0\u5f55keyid\u503c\u662f&quot;20200619980618-xxxx-xxxx-xxxx-xxxxxxxxxxxx&quot;\uff0c\u524d6\u4f4d\u662f\u5e74\u6708YYYYMM\uff0c\u540e\u976236\u4f4d\u662f\u7528\u6237ID<\/p>\n<\/blockquote>\n<h4>\u67e5\u8be2\u7528\u6237\u5f53\u6708\u7b7e\u5230\u6570\u636e<\/h4>\n<ul>\n<li>\u7531\u4e8e\u8868\u8bbe\u8ba1\u65f6keyid\u4e3a\u6708\u4efd+\u7528\u6237ID\uff0c\u6545\u53ef\u76f4\u63a5\u6839\u636ekeyid\u67e5\u8be2\u6307\u5b9a\u7528\u6237\u6307\u5b9a\u6708\u4efd\u7684\u7b7e\u5230\u6570\u636e<\/li>\n<li>keyid\u4e0d\u4f7f\u7528<code>auto_increment<\/code>\u81ea\u589e\u7684\u539f\u56e0\u4f60GET\u5230\u4e86\u5417<\/li>\n<\/ul>\n<pre><code class=\"language-sql\"># \u67e5\u8be2\u7528\u6237\u5f53\u6708\u7b7e\u5230\u6570\u636e\nSELECT\n    sign_record\nFROM\n    user_sign_h \nWHERE\n    keyid = &#039;xxxx&#039;;<\/code><\/pre>\n<h4>\u67e5\u8be2\u7528\u6237\u8fde\u7eed\u7b7e\u5230\u5929\u6570<\/h4>\n<ul>\n<li>\u7531\u4e8e\u8868\u8bbe\u8ba1\u6709\u4e13\u95e8\u5b58\u50a8\u8fde\u7eed\u7b7e\u5230\u6570\u91cf\u7684\u5b57\u6bb5\uff0c\u6545\u76f4\u63a5\u67e5\u8be2\u8be5\u7528\u6237\u5f53\u6708\u7684\u201c\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u201d\u5373\u53ef<\/li>\n<li>\u6ce8\u610f\uff1a\u5982\u679c\u670d\u52a1\u5668\u65f6\u95f4\u662f\u5f53\u6708\u7b2c\u4e00\u5929\uff0c\u5219\u9700\u8981\u67e5\u8be2\u5f53\u6708\u4ee5\u53ca\u4e0a\u4e2a\u6708\u7684\u201c\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u201d\u3002\u82e5\u5f53\u6708\u7684\u201c\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u201d\u4e3a0 \uff0c\u5219\u53d6\u4e0a\u4e2a\u6708\u7684\u201c\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u201d<\/li>\n<\/ul>\n<pre><code class=\"language-sql\"># \u67e5\u8be2\u7528\u6237\u8fde\u7eed\u7b7e\u5230\u5929\u6570\uff08\u670d\u52a1\u5668\u65f6\u95f4\u4e0d\u662f\u5f53\u6708\u7b2c\u4e00\u5929\uff09\n\nSELECT\n    sign_count\nFROM user_sign_h \nWHERE keyid = &#039;\u5f53\u6708xxxx&#039;;<\/code><\/pre>\n<pre><code class=\"language-sql\"># \u67e5\u8be2\u7528\u6237\u8fde\u7eed\u7b7e\u5230\u5929\u6570\uff08\u670d\u52a1\u5668\u65f6\u95f4\u662f\u5f53\u6708\u7b2c\u4e00\u5929\uff09\n\nSELECT\n    sign_month,    sign_count \nFROM user_sign_h \nWHERE keyid in (&#039;\u5f53\u6708keyid&#039;, &#039;\u4e0a\u6708keyid&#039;);<\/code><\/pre>\n<h4>\u7b7e\u5230<\/h4>\n<ul>\n<li>\u7b7e\u5230\u5148\u786e\u8ba4\u672c\u6708\u662f\u5426\u5df2\u7b7e\u5230\uff1a<\/li>\n<li>\n<ul>\n<li>\u672c\u6708\u672a\u7b7e\u5230\uff0c\u5219\u65b0\u589e\u7b7e\u5230\u6570\u636e<\/li>\n<\/ul>\n<\/li>\n<li>\n<ul>\n<li>\u672c\u6708\u5df2\u7b7e\u5230\uff0c\u5219\u66f4\u65b0\u7b7e\u5230\u8bb0\u5f55<\/li>\n<\/ul>\n<\/li>\n<li>\u7b7e\u5230\uff1a\u5c06\u5f53\u524d\u65e5\u671f\u7b7e\u5230\u72b6\u6001\u7f6e\u4e3a\u201c\u5df2\u7b7e\u5230\u201d\uff08\u5bf9\u5e94\u4f4d\u7f6e\u4e3a1\uff09<\/li>\n<li>\u7b7e\u5230\u65f6\u9700\u66f4\u65b0\u8fde\u7eed\u7b7e\u5230\u5929\u6570\uff1a<\/li>\n<li>\n<ul>\n<li>\u82e5\u6628\u5929\u5df2\u7b7e\u5230\uff0c\u5219\u201c\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u201d\u4e3a\u201c\u5f53\u524d\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u201d+1<\/li>\n<\/ul>\n<\/li>\n<li>\n<ul>\n<li>\u82e5\u6628\u5929\u672a\u7b7e\u5230\uff0c\u5219\u201c\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u201d\u7f6e\u4e3a1\u5373\u53ef<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<pre><code class=\"language-sql\"># \u672c\u6708\u7b2c\u4e00\u5929\u7b7e\u5230SQL\n# \u65b0\u589e\u4e00\u6761\u7b7e\u5230\u6570\u636e\uff0c\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u9700\u5224\u65ad\u4e0a\u6708\u7b7e\u5230\u8bb0\u5f55\u7684\u6700\u540e\u4e00\u6b21\u7b7e\u5230\u65e5\u671f\n# \u82e5\u4e0a\u6708\u6700\u540e\u4e00\u6b21\u7b7e\u5230\u662f\u6708\u672b\uff0c\u5219\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u5728\u4e0a\u6708\u57fa\u7840\u4e0a\u52a01\n# \u82e5\u4e0a\u6708\u6700\u540e\u4e00\u6b21\u7b7e\u5230\u4e0d\u662f\u6708\u672b\uff0c\u5219\u5c06\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u76f4\u63a5\u7f6e\u4e3a1\n\nINSERT INTO user_sign_h ( `keyid`, `user_key`, `sign_month`, `sign_record`, `sign_count`, `last_sign_date` )\nVALUES\n    ( &#039;\u672c\u6708keyid&#039;, &#039;\u7528\u6237id&#039;, &#039;202006&#039;, 1 &lt;&lt; 1, \u4e1a\u52a1\u65b9\u8ba1\u7b97\u597d\u7684\u8fde\u7eed\u7b7e\u5230\u5929\u6570 , &#039;20200601&#039; );<\/code><\/pre>\n<pre><code class=\"language-sql\"># \u672c\u6708\u975e\u7b2c\u4e00\u6b21\u7b7e\u5230SQL\n# \u672c\u6708\u7b2cx\u5929\u7b7e\u5230\uff0c\u5219 sign_record = sign_record | (1 &lt;&lt; x)\n# 1 &lt;&lt; x \u8868\u793a\uff1a1\u5411\u5de6\u79fb\u52a8x\u4f4d\n# \u5047\u8bbe\u4eca\u65e5\u662f 20200602\uff0c\u5219\u6628\u5929\u662f 20200601\n\nUPDATE user_sign_h \nSET sign_record = sign_record | ( 1 &lt;&lt; 2 ),\nsign_count = ( CASE last_sign_date WHEN &#039;20200602&#039; THEN sign_count WHEN &#039;20200601&#039; THEN ( sign_count + 1 ) ELSE 1 END ),\nlast_sign_date = &#039;20200602&#039; \nWHERE\n    keyid = &#039;\u672c\u6708keyid&#039; \n    AND sign_month = &#039;202006&#039;;<\/code><\/pre>\n<ul>\n<li>\u5173\u4e8e\u8865\u7b7e<\/li>\n<\/ul>\n<p>\u8865\u7b7e\u9700\u8981\u66f4\u65b0\u5bf9\u5e94\u65e5\u671f\u7684\u7b7e\u5230\u8bb0\u5f55\uff0c\u8ba1\u7b97\u5e76\u66f4\u65b0\u8fde\u7eed\u7b7e\u5230\u5929\u6570\uff1b\u4e0d\u662f\u672c\u6587\u91cd\u70b9\u5177\u4f53\u7684\u6280\u672f\u903b\u8f91\u5c31\u4e0d\u8d58\u8ff0\u4e86\u3002<\/p>\n<h3>MySQL\u7b7e\u5230\u89e3\u51b3\u65b9\u6848\u7684\u6ce8\u610f\u4e8b\u9879<\/h3>\n<h4>\u5e76\u53d1\u7b7e\u5230\u5982\u4f55\u5904\u7406\uff1f<\/h4>\n<ul>\n<li>\u4ece\u4ee5\u4e0aSQL\u53ef\u4ee5\u770b\u51fa\uff0c\u82e5\u672c\u6708\u5df2\u7b7e\u5230\uff0c\u5373\u4f7f\u91cd\u590d\u7b7e\u5230\uff0c\u4e5f\u4e0d\u4f1a\u5f71\u54cd\u6700\u7ec8\u7684\u6570\u636e<\/li>\n<li>\u6ce8\u610f\uff1aSQL\u4e2d\u7684<code>last_sign_date = xxx<\/code>\u5fc5\u987b\u5728<code>sign_count = xxx<\/code>\u4e4b\u540e\uff0c\u56e0\u4e3a<code>sign_count<\/code>\u7684\u503c\u53d6\u51b3<code>CASE last_sign_date<\/code>\u7684\u8ba1\u7b97\u7ed3\u679c<\/li>\n<li>\u5982\u679c\u662f\u672c\u6708\u7b2c\u4e00\u6b21\u7b7e\u5230\uff0c\u5219\u65b0\u589e\u6570\u636e\uff0c\u7531\u4e8e\u65b0\u589e\u6570\u636e\u7684keyid\u662f\u6309\u89c4\u5219\u751f\u6210\u7684\uff0c\u6240\u4ee5\u5373\u4f7f\u975e\u6cd5\u6216\u5f02\u5e38\u64cd\u4f5c\u5bfc\u81f4\u5e76\u53d1\u7b7e\u5230\uff0c\u4e5f\u4e1d\u6beb\u4e0d\u4f1a\u5f71\u54cd\u6700\u7ec8\u7684\u6570\u636e<\/li>\n<\/ul>\n<h4>MySQL\u7b7e\u5230\u8bb0\u5f55\u89e3\u51b3\u65b9\u6848\u7684\u60f3\u8c61\u7a7a\u95f4<\/h4>\n<ul>\n<li>\u4ece\u4e0a\u8ff0\u5b9e\u73b0\u65b9\u6848\u6765\u770b\uff0c\u4e1a\u52a1\u903b\u8f91\u3001\u6280\u672f\u5b9e\u73b0\u53caSQL\u8db3\u591f\u7b80\u5355\uff0c\u4ece\u800c\u5355\u6b21\u67e5\u8be2\/\u7b7e\u5230\u6027\u80fd\u53ef\u4ee5\u6ee1\u8db3\u4ea7\u54c1\u8bc9\u6c42<\/li>\n<li>1\u4e2a\u7528\u62371\u5e74\u6700\u591a12\u6761\u8bb0\u5f55\uff0c3KW\u7528\u6237\u4e00\u5e74\u7ea63.6\u4ebf\u6761\u8bb0\u5f55\uff0c\u5047\u8bbe\u6309\u7528\u6237ID hash100\u5206\u8868\uff0c\u5355\u8868\u7ea6360W\u6761\u8bb0\u5f55\uff0cMySQL\u5b8c\u5168\u80fd\u627f\u53d7<\/li>\n<\/ul>\n<h2>\u57fa\u4e8eRedis\u7684Bitmaps\u5b9e\u73b0\u7b7e\u5230\u65e5\u5386<\/h2>\n<h3>\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528Bitmaps<\/h3>\n<p>\u4e0a\u8ff0\u57fa\u4e8eMySQL\u7684\u8fdb\u9636\u89e3\u51b3\u65b9\u6848\uff0c\u5df2\u80fd\u6ee1\u8db3\u6d77\u91cf\u7528\u6237\u7684\u7b7e\u5230\u4e1a\u52a1\u3002\u4f46\u6211\u4eec\u60f3\u518d\u8282\u7701\u70b9\u5b58\u50a8\u7a7a\u95f4\uff0c\u518d\u63d0\u5347\u54cd\u5e94\u6548\u7387\u5462\u3002Bitmaps \u95ea\u4eae\u767b\u573a\u3002<\/p>\n<h3>\u4ec0\u4e48\u662fBitmaps<\/h3>\n<p>Bit arrays (or simply bitmaps\uff0c\u6211\u4eec\u53ef\u4ee5\u79f0\u4e4b\u4e3a<strong>\u4f4d\u56fe<\/strong>)\uff0cBitmaps\u5e76\u4e0d\u662f\u4e00\u79cd\u5b9e\u9645\u7684\u6570\u636e\u7c7b\u578b\uff08\u6bd4\u5982Strings\u3001Lists\u3001Sets\u3001Hashes\u8fd9\u7c7b\u5b9e\u9645\u7684\u6570\u636e\u7c7b\u578b\uff09\uff0c\u800c\u662f\u57fa\u4e8eString\u6570\u636e\u7c7b\u578b\u7684\u6309\u4f4d\u64cd\u4f5c\u3002Bitmaps\u652f\u6301\u7684\u6700\u5927\u4f4d\u6570\u662f2^32\u4f4d<\/p>\n<p>\u4f4d\u56fe\u672c\u8d28\u662f\u6570\u7ec4\uff0c\u6570\u7ec4\u7531\u591a\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u7ec4\u6210\uff0c\u6bcf\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u90fd\u5bf9\u5e94\u4e00\u4e2a\u504f\u79fb\u91cf\uff08\u6211\u4eec\u53ef\u4ee5\u79f0\u4e4b\u4e3a<strong>\u7d22\u5f15<\/strong>\uff09<\/p>\n<p>Bitmaps\u53ef\u4ee5\u6781\u5927\u5730\u8282\u7701\u5b58\u50a8\u7a7a\u95f4\uff0c\u4f7f\u7528512M\u5185\u5b58\u5c31\u53ef\u4ee5\u5b58\u50a8\u591a\u8fbe42.9\u4ebf\u7684\u5b57\u8282\u4fe1\u606f\uff082^32 = 4,294,967,296\uff09<\/p>\n<p>Bitmaps\u5e38\u89c1\u5e94\u7528\u573a\u666f\uff1a<\/p>\n<ul>\n<li>\u2460 \u5404\u79cd\u5b9e\u65f6\u5206\u6790<\/li>\n<li>\u2461 \u5b58\u50a8\u5927\u91cf\u4e0eID\u5173\u8054\u7684\u5e03\u5c14\u503c\uff0c\u4e14\u5e0c\u671b\u6781\u81f4\u8282\u7701\u7a7a\u95f4<\/li>\n<\/ul>\n<p>\u6bd4\u5982\u4f60\u60f3\u7edf\u8ba1\u54ea\u4e2a\u7528\u6237\u8bbf\u95ee\u7f51\u7ad9\u7684\u5929\u6570\u6700\u591a\uff1b\u5219\u53ef\u4ee5\u5728\u7528\u6237\u6bcf\u5929\u767b\u5f55\u65f6\u5c06\u5bf9\u5e94\u5929\u6570\u7684 bit\u4f4d\u8bbe\u7f6e\u4e3a1\uff0c\u4f7f\u7528BITCOUNT\u7edf\u8ba1\u6b64\u7528\u6237\u5bf9\u5e94\u7684\u5b57\u7b26\u4e32\u4e2d\u4e3a1\u7684\u4f4d\u7684\u6570\u91cf\uff0c\u4ece\u800c\u8ba1\u7b97\u51fa\u5176\u767b\u5f55\u5929\u6570\u3002<\/p>\n<p>\u901a\u5e38\u6211\u4eec\u907f\u514d\u5728Redis\u4e2d\u4f7f\u7528\u5927key\uff0c\u5efa\u8bae\u5c06\u5927key\u62c6\u5206\u6210\u591a\u4e2a\u5c0fkey\u3002\u5e38\u89c4\u5efa\u8bae\u662f\u5355key\u4ec5\u5b58\u50a81M\u4fe1\u606f\uff0c\u5219\u53ef\u901a\u8fc7<code>bit\/M<\/code>\u8ba1\u7b97\u51fakey\u7684\u540d\u5b57\uff0c\u901a\u8fc7<code>bit MOD M<\/code>\uff08MOD\u8868\u793a\u53d6\u4f59\uff09\u8ba1\u7b97\u51fa\u7b2c\u51e0\u4e2abit\u4f4d\u3002\u5047\u8bbe<code>bit\/M = 2<\/code>\uff0c<code>bit MOD M = 666<\/code>\uff0c\u5219\u5bf9\u6b64\u4f4d\u7684\u64cd\u4f5c\u5b9e\u9645\u662f\u64cd\u4f5ckey\u540d\u5b57\u4e3a<code>xxx:2<\/code>\u7684key\uff0c\u4f4d\u6570\u662f\u7b2c666\u7684\u4f4d\u3002<\/p>\n<h3>Bitmaps\u5982\u4f55\u4f7f\u7528<\/h3>\n<p>Bitmaps\u6838\u5fc3\u547d\u4ee4\uff1aSETBIT\u3001BITOP\u3001GETBIT\u3001BITCOUNT\u3001BITFIELD\u3001BITPOS<\/p>\n<h4>Bitmaps\u4f4d\u64cd\u4f5c\u547d\u4ee4\u7b80\u8ff0<\/h4>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">\u547d\u4ee4<\/th>\n<th style=\"text-align: left;\">\u529f\u80fd<\/th>\n<th style=\"text-align: left;\">\u53c2\u6570<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\">SETBIT<\/td>\n<td style=\"text-align: left;\">\u6307\u5b9a\u504f\u79fb\u91cfbit\u4f4d\u7f6e\u8bbe\u7f6e\u503c<\/td>\n<td style=\"text-align: left;\">SETBIT key offset value[0 =&lt; offset &lt; 2^32]<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">BITOP<\/td>\n<td style=\"text-align: left;\">\u5bf9\u4e00\u4e2a\u6216\u591a\u4e2akey\u6267\u884c\u903b\u8f91\u64cd\u4f5c\uff0c\u5e76\u5c06\u7ed3\u679c\u4fdd\u5b58\u5230destkey<\/td>\n<td style=\"text-align: left;\">BITOP [AND, OR, XOR, NOT] destkey key [key &#8230;]<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">GETBIT<\/td>\n<td style=\"text-align: left;\">\u67e5\u8be2\u6307\u5b9a\u504f\u79fb\u4f4d\u7f6e\u7684bit\u503c<\/td>\n<td style=\"text-align: left;\">GETBIT key offset<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">BITCOUNT<\/td>\n<td style=\"text-align: left;\">\u7edf\u8ba1\u6307\u5b9a\u5b57\u8282\u533a\u95f4bit\u4e3a1\u7684\u6570\u91cf<\/td>\n<td style=\"text-align: left;\">BITCOUNT key [start] [end]<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">BITFIELD<\/td>\n<td style=\"text-align: left;\">\u64cd\u4f5c\u591a\u5b57\u8282\u4f4d\u57df<\/td>\n<td style=\"text-align: left;\">BITFIELD key [GET type offset] [SET type offset value] [INCRBY type offset increment] [OVERFLOW WRAP\/SAT\/FAIL]<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">BITPOS<\/td>\n<td style=\"text-align: left;\">\u67e5\u8be2\u6307\u5b9a\u5b57\u8282\u533a\u95f4\u7b2c\u4e00\u4e2a\u88ab\u8bbe\u7f6e\u62101\u7684bit\u4f4d\u7684\u4f4d\u7f6e<\/td>\n<td style=\"text-align: left;\">BITPOS key bit [start] [end]<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img decoding=\"async\" src=\"http:\/\/www.yezhou.me\/AppBlog\/images\/\u6570\u636e\u5e93\/Redis-String\u4f4d\u64cd\u4f5c.png\" alt=\"Redis-String\u4f4d\u64cd\u4f5c\" \/><\/p>\n<h4>Bitmaps\u4f4d\u64cd\u4f5c\u547d\u4ee4\u6ce8\u610f\u4e8b\u9879<\/h4>\n<ul>\n<li>BITOP\u652f\u6301\u903b\u8f91\u64cd\u4f5c\uff0c\u4e14AND\u3001\u6216OR\u3001\u5f02\u6216XOR\u3001\u975eNOT<\/li>\n<li>\n<ul>\n<li>\u4e14AND(&amp;)\uff1a\u540c1\u4e3a1\uff0c\u5176\u4f59\u4e3a0<\/li>\n<\/ul>\n<\/li>\n<li>\n<ul>\n<li>\u6216OR(|)\uff1a\u67091\u4e3a1\uff0c\u540c0\u4e3a0<\/li>\n<\/ul>\n<\/li>\n<li>\n<ul>\n<li>\u5f02\u6216XOR(^)\uff1a\u4e0d\u540c\u4e3a1\uff0c\u76f8\u540c\u4e3a0<\/li>\n<\/ul>\n<\/li>\n<li>\n<ul>\n<li>\u975eNOT(~)\uff1a1\u53d80\uff0c0\u53d81<\/li>\n<\/ul>\n<\/li>\n<li>GETBIT\u3001SETBIT\u64cd\u4f5c\u7684\u662f\u6307\u5b9a\u4f4d\uff0c\u53c2\u6570offset\u6307\u7684\u662f\u4e8c\u8fdb\u5236\u4f4d\u504f\u79fb\u91cf<\/li>\n<li>BITCOUNT\u3001BITPOS\u64cd\u4f5c\u7684\u662f\u5b57\u8282\uff0c\u53c2\u6570start\u3001end\u6307\u7684\u662f\u5b57\u8282\u504f\u79fb\u91cf<\/li>\n<li>BITPOS \u8fd4\u56de\u7684\u662f\u76f8\u5bf9\u4e8e\u7b2c0 bit\u4f4d\u7684\u504f\u79fb\u91cf\uff0c\u800c\u4e0d\u662f\u76f8\u5bf9\u4e8e \u53c2\u6570\u4e2dstart\u7684\u504f\u79fb\u91cf<\/li>\n<\/ul>\n<h4>Bitmaps\u4f4d\u64cd\u4f5c\u547d\u4ee4\u793a\u4f8b<\/h4>\n<ul>\n<li>SETBIT\u3001GETBIT\u3001BITCOUNT\u3001BITPOS \u547d\u4ee4\u793a\u4f8b<\/li>\n<\/ul>\n<pre><code class=\"language-bash\"># \u4f4d\u56feBitmaps\u4f4d\u64cd\u4f5c\u547d\u4ee4\u793a\u4f8b\n# SETBIT\u3001GETBIT\u3001BITCOUNT\u3001BITPOS \u547d\u4ee4\u793a\u4f8b\n\n\/\/ SETBIT \u547d\u4ee4\u793a\u4f8b\n127.0.0.1:6379&gt; setbit bitkey 2 1\n(integer) 0\n127.0.0.1:6379&gt; setbit bitkey 22 1\n(integer) 0\n\n\/\/ GETBIT \u547d\u4ee4\u793a\u4f8b\n127.0.0.1:6379&gt; getbit bitkey 0\n(integer) 0\n127.0.0.1:6379&gt; getbit bitkey 2\n(integer) 1\n\n\/\/ BITCOUNT \u547d\u4ee4\u793a\u4f8b\n\/\/ BITCOUNT\u3001BITPOS\u7684\u53c2\u6570start\u3001end\u6307\u7684\u662f\u5b57\u8282\u504f\u79fb\u91cf\n127.0.0.1:6379&gt; bitcount bitkey 3 22\n(integer) 0\n127.0.0.1:6379&gt; bitcount bitkey 0 0\n(integer) 1\n127.0.0.1:6379&gt; bitcount bitkey 2 2\n(integer) 1\n127.0.0.1:6379&gt; bitcount bitkey 0 2\n(integer) 2\n\n\/\/ BITPOS \u547d\u4ee4\u793a\u4f8b\n127.0.0.1:6379&gt; bitpos bitkey 1 0 0\n(integer) 2\n\/\/ BITPOS \u8fd4\u56de\u7684\u662f\u76f8\u5bf9\u4e8e\u7b2c0 bit\u4f4d\u7684\u504f\u79fb\u91cf\n127.0.0.1:6379&gt; bitpos bitkey 1 2 2\n(integer) 22\n127.0.0.1:6379&gt; bitpos bitkey 1 20 22\n(integer) -1<\/code><\/pre>\n<ul>\n<li>bitop \u547d\u4ee4\u793a\u4f8b<\/li>\n<\/ul>\n<pre><code class=\"language-bash\"># \u4f4d\u56feBitmaps\u4f4d\u64cd\u4f5c\u547d\u4ee4\u793a\u4f8b\n# bitop \u547d\u4ee4\u793a\u4f8b\n\n127.0.0.1:6379&gt; setbit bkey1 0 1\n(integer) 0\n127.0.0.1:6379&gt; setbit bkey1 1 1\n(integer) 0\n127.0.0.1:6379&gt; setbit bkey1 5 1\n(integer) 0\n127.0.0.1:6379&gt; setbit bkey2 0 1\n(integer) 0\n127.0.0.1:6379&gt; setbit bkey2 3 1\n(integer) 0\n127.0.0.1:6379&gt; setbit bkey3 1 1\n(integer) 0\n\n\/\/ bitop AND\n127.0.0.1:6379&gt; bitop AND dkey1 bkey1 bkey2 bkey3\n(integer) 1\n127.0.0.1:6379&gt; getbit dkey1 0\n(integer) 0\n127.0.0.1:6379&gt; getbit dkey1 1\n(integer) 0\n127.0.0.1:6379&gt; get dkey1\n&quot;\\x00&quot;\n127.0.0.1:6379&gt; bitop AND dkey1 bkey1 bkey2\n(integer) 1\n127.0.0.1:6379&gt; getbit dkey1 0\n(integer) 1\n127.0.0.1:6379&gt; getbit dkey1 3\n(integer) 0\n\n\/\/ bitop XOR\n127.0.0.1:6379&gt; bitop XOR dkey1 bkey1 bkey2\n(integer) 1\n127.0.0.1:6379&gt; getbit dkey1 0\n(integer) 0\n127.0.0.1:6379&gt; getbit dkey1 5<\/code><\/pre>\n<h3>Bitmaps\u5b9e\u6218\u7b7e\u5230\u65e5\u5386<\/h3>\n<h4>\u7b7e\u5230\u573a\u666f\u4e0b\u7684Bitmaps\u8bbe\u8ba1<\/h4>\n<p>1M\u6570\u636e\u53ef\u4ee5\u5b58\u50a8\u202d1,048,576\u4f4d\uff081 <em> 1024 <\/em> 1024 = \u202d1,048,576\u202c\uff09\uff0c\u53ef\u4ee5\u5b58\u50a82870\u5e74\u7684\u6570\u636e\uff08\u202d1,048,57 \/ 365.25 = 2870.84\uff09<\/p>\n<p>\u6240\u4ee5\u6211\u4eec\u4f7f\u75281\u4e2akey\u5373\u53ef\u5b8c\u5168\u50a8\u5b58\u4e00\u4e2a\u7528\u6237\u7684\u7b7e\u5230\u6570\u636e\u3002redis\u7684key\u8bbe\u8ba1\u4e3a<code>sign:user_key<\/code>\uff0cvalue\u5b58\u50a8\u7b7e\u5230\u8bb0\u5f55\u7684\u4f4d\u6570\u7ec4<\/p>\n<h4>Bitmaps\u5b9e\u73b0\u7528\u6237\u7b7e\u5230<\/h4>\n<p>\u9996\u5148\u660e\u786e\u7b2c0\u4f4d\u8868\u793a\u54ea\u4e00\u5929\u7684\u6570\u636e\uff08\u6570\u636e\u57fa\u70b9\uff09\uff0c\u6bd4\u5982\u7b7e\u5230\u4ea7\u54c1\u662f2000\u5e741\u67081\u65e5\u4e0a\u7ebf\u7684\uff08\u6570\u636e\u57fa\u70b9\u5c31\u53ef\u4ee5\u662f2000\u5e741\u67081\u65e5\uff09\uff0c\u90a3\u4e48\u7b2c0\u4f4d\u5c31\u8868\u793a2000\u5e741\u67081\u65e5\u7684\u7b7e\u5230\u8bb0\u5f55\u3002\u60f3\u8981\u8bb0\u5f552000\u5e741\u67083\u65e5\u7684\u7b7e\u5230\u8bb0\u5f55\uff0c\u5219\u5148\u8ba1\u7b97\u6b64\u65f6\u95f4\u70b9\u548c\u6570\u636e\u57fa\u70b9\u7684\u5dee\u503c\uff08\u5dee\u503c\u4e3a2\uff09\uff0c\u52192000\u5e741\u67083\u65e5\u7684\u7b7e\u5230\u8bb0\u5f55\u5c06\u5b58\u50a8\u5728\u7b2c2\u4f4d\u3002\u5176\u4ed6\u65e5\u671f\u4ee5\u6b64\u7c7b\u63a8\u3002<\/p>\n<pre><code class=\"language-bash\"># \u6307\u5b9a\u65e5\u671f\u7b7e\u5230\uff0c\u65f6\u95f4\u590d\u6742\u5ea6O(1)\n\n127.0.0.1:6379&gt; setbit sign:user_key 2 1<\/code><\/pre>\n<h4>Bitmaps\u67e5\u8be2\u7b7e\u5230\u60c5\u51b5<\/h4>\n<p>\u901a\u8fc7get\u547d\u4ee4\u67e5\u8be2\u6307\u5b9a\u7528\u6237\u7684\u6240\u6709\u7b7e\u5230\u8bb0\u5f55\uff0c\u7136\u540e\u5728\u5185\u5b58\u4e2d\u8ba1\u6570\u5373\u53ef\u3002\u6307\u5b9a\u65f6\u95f4\u6bb5\u7684\u7b7e\u5230\u60c5\u51b5\u6216\u8005\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u5747\u53ef\u8ba1\u7b97\u3002<\/p>\n<pre><code class=\"language-bash\"># \u67e5\u8be2\u6307\u5b9akey\u7684\u6240\u6709\u7b7e\u5230\u6570\u636e\uff0c\u65f6\u95f4\u590d\u6742\u5ea6O(1)\n\n127.0.0.1:6379&gt; get sign:user_key\n\n\/\/ \u67e5\u8be2\u6307\u5b9a\u65e5\u671f\u662f\u5426\u7b7e\u5230\n\/\/ \u5148\u8ba1\u7b97\u6b21\u65e5\u671f\u4e0e\u6570\u636e\u57fa\u70b9\u7684\u5dee\u503cx\n127.0.0.1:6379&gt; get sign:user_key x<\/code><\/pre>\n<h4>Bitmaps\u5b9e\u73b0\u7b7e\u5230\u4e1a\u52a1\u603b\u7ed3<\/h4>\n<p>\u4ece\u4e0a\u8ff0\u6765\u770b\uff0c\u4f7f\u7528\u4f4d\u56feBitmaps\u5b9e\u73b0\u7b7e\u5230\u4e1a\u52a1\u573a\u666f\u76f8\u5bf9\u7b80\u5355\u5f88\u591a\uff0c\u4e0d\u5fc5\u8003\u8651\u8de8\u6708\u7b49\u95ee\u9898\uff0c\u800c\u4e14\u5360\u7528\u7684\u5b58\u50a8\u7a7a\u95f4\u4e5f\u6781\u5c0f\u3002\u90a3\u4e48\u6211\u4eec\u8fd8\u6709\u4f18\u5316\u7a7a\u95f4\u5417\uff1f<\/p>\n<p>\u76ee\u524d\u662f1\u4e2a\u7528\u6237\u4ec51\u6761\u8bb0\u5f55\uff0c\u5982\u679c\u4ea7\u54c1\u8bbe\u8ba1\u4e0a\u4e0d\u4f1a\u5b58\u5728\u8de8\u5e74\u6570\u636e\u7684\u64cd\u4f5c\uff0c\u662f\u5426\u53ef\u8003\u8651\u5c06\u7b7e\u5230\u6570\u636e\u6309\u5e74\u5b58\u50a8\u5462\uff0c\u5386\u5e74\u6570\u636e\u5728\u6301\u4e45\u5316\u540e\u4eceRedis\u4e2d\u6e05\u9664\u4ece\u800c\u8282\u7701Redis\u5185\u5b58\u7a7a\u95f4\u3002\u5f53\u7136\u4e0d\u8981\u4e3a\u4e86\u8282\u7701\u800c\u62c6\u5206\uff0c\u5982\u679c\u5bfc\u81f4\u4e1a\u52a1\u903b\u8f91\u53d8\u590d\u6742\uff0c\u5c31\u5f97\u4e0d\u507f\u5931\u4e86\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<h3>\u4e1a\u52a1\u5206\u6790<\/h3>\n<ul>\n<li><strong>\u767e\u4ebf\u7528\u6237\u4e5f\u4ec5\u9700\u898111\u4f4d\u5c31\u591f\u5b58\u50a8\u4e86\uff0c\u7528\u6237ID\u4e3a\u4ec0\u4e48\u662f36\u4f4d\u7684UUID\u5462\uff1f<\/strong><\/li>\n<\/ul>\n<p>\u6280\u672f\u4e0a11\u4f4d\u7684\u786e\u8db3\u591f\u4e86\uff0c\u4f46\u6280\u672f\u90fd\u662f\u4e3a\u4e1a\u52a1\u670d\u52a1\u7684\u3002\u5982\u679c\u4f7f\u7528\u7b80\u5355\u7684\u6570\u5b57\uff0c\u5219\u7ade\u4e89\u5bf9\u624b\u5c31\u53ef\u4ee5\u77e5\u9053\u4f60\u7684\u771f\u5b9e\u7528\u6237\u6570\u91cf\u3001\u7528\u6237\u589e\u91cf\u60c5\u51b5\uff0c\u8fd9\u5728\u5546\u4e1a\u4e0a\u662f\u80af\u5b9a\u4e0d\u5141\u8bb8\u7684\u3002<\/p>\n<ul>\n<li><strong>\u57fa\u4e8eMySQL\u5b9e\u73b0\u7b7e\u5230\u4e1a\u52a1\uff0c\u5982\u679c\u662f\u672c\u6708\u7b2c\u4e00\u5929\u7b7e\u5230\uff0c\u201c\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u201d\u4e3a\u4ec0\u4e48\u7531\u4e1a\u52a1\u65b9\u8ba1\u7b97\u597d\uff0c\u800c\u4e0d\u662fSQL\u76f4\u63a5\u5b9e\u73b0\uff1f<\/strong><\/li>\n<\/ul>\n<p>\u4e1a\u52a1\u903b\u8f91\u8fd8\u662f\u4e1a\u52a1\u65b9\u505a\uff0c\u5728\u4fdd\u8bc1\u6570\u636e\u51c6\u786e\u6027\u7684\u524d\u63d0\u4e0b\uff0c\u6570\u636e\u5e93\u903b\u8f91\u5c3d\u91cf\u7b80\u5355\u3002<\/p>\n<ul>\n<li><strong>keyid\u4e3a\u4ec0\u4e48\u4e0d\u4f7f\u7528<code>auto_increment<\/code>\u81ea\u589e\uff1f<\/strong><\/li>\n<\/ul>\n<p><code>auto_increment<\/code>\u81ea\u589e\u7684\u786e\u7b80\u5355\u7701\u4e8b\uff0c\u4f46keyid\u81ea\u884c\u8bbe\u8ba1\u4e3a\u6708\u4efd+\u7528\u6237ID\uff0c\u76f4\u63a5\u6839\u636ekeyid\u67e5\u8be2\u6307\u5b9a\u7528\u6237\u6307\u5b9a\u6708\u4efd\u7684\u7b7e\u5230\u6570\u636e\uff0c\u8fd9\u6837\u4e0d\u9999\u5417\u3002<\/p>\n<ul>\n<li><strong>\u6309\u7167\u8fd9\u79cd\u601d\u8def\u5c31\u80fd\u81ea\u5df1\u505a\u4e2a\u201c\u4eac\u4e1c\u7b7e\u5230\u9886\u4eac\u8c46\u201d\u5417\uff1f<\/strong><\/li>\n<\/ul>\n<p>\u53ea\u80fd\u8bf4\u53ef\u4ee5\u5b9e\u73b0\u4ee5\u4e0a\u4ea7\u54c1\u903b\u8f91\uff0c\u4eac\u4e1c\u9886\u4eac\u8c46\u7684\u5b9e\u9645\u4ea7\u54c1\u903b\u8f91\u66f4\u52a0\u590d\u6742\uff0c\u6bd4\u5982\uff0c\u4eac\u4e1c\u7b7e\u5230\u9886\u4eac\u8c46\u6709\u4e2a\u9875\u9762\u53ef\u4ee5\u770b\u5230\u201c\u4eac\u8c46\u9886\u53d6\u660e\u7ec6\u201d\uff0c\u5305\u542b\u7cbe\u786e\u5230\u79d2\u7ea7\u522b\u7684\u9886\u53d6\u65f6\u95f4\uff0c\u8fd9\u70b9\u4ee5\u4e0a\u6587\u7ae0\u5e76\u672a\u6d89\u53ca\uff0c\u5f53\u7136\u8fd9\u4e5f\u4e0d\u662f\u672c\u6587\u7684\u91cd\u70b9\u3002<\/p>\n<p>\u6bcf\u4e2a\u4ea7\u54c1\u7684\u80cc\u540e\u90fd\u6709\u7740\u4ea7\u54c1\u7ecf\u7406\u5145\u5206\u8c03\u7814\u7528\u6237\u9700\u6c42\u3001\u4e1a\u52a1\u9700\u6c42\uff0c\u67b6\u6784\u3001\u6280\u672f\u3001\u8fd0\u8425\u7b49\u4eba\u5458\u7684\u901a\u529b\u5408\u4f5c\u3002\u5fc3\u5b58\u656c\u754f\u3002<\/p>\n<ul>\n<li><strong>\u4e3a\u4f55\u9c9c\u6709APP\u5c55\u793a\u7528\u6237\u4e00\u5e74\u7684\u7b7e\u5230\u8bb0\u5f55\uff1f<\/strong><\/li>\n<\/ul>\n<p>\u4eac\u4e1c\u7684\u7b7e\u5230\u65e5\u5386\u4ec5\u5c55\u793a\u4e86\u5f53\u524d\u6708\u4efd\u7684\u6570\u636e\uff0c\u652f\u4ed8\u5b9d\u4f1a\u5458\u7b7e\u5230\u7684\u6700\u5927\u8fde\u7eed\u7b7e\u5230\u5929\u6570\u662f7\u5929\uff0cCSDN\u7684\u7b7e\u5230\u6b21\u6570\u4ec5\u4fdd\u75593\u4e2a\u6708\u3002<\/p>\n<p>\u4e3a\u4f55\u4e0d\u5c55\u793a\u4e00\u5e74\u7684\u6570\u636e\u5462\uff1f\u5728\u5546\u8a00\u5546\uff0c\u4e0d\u5c55\u793a\u7684\u91cd\u8981\u539f\u56e0\u5f53\u7136\u662f\u5546\u4e1a\u4ef7\u503c\u4e0d\u8db3\uff0c\u6295\u5165\u4ea7\u51fa\u6bd4\u4e0d\u9ad8\u3002\u6280\u672f\u4e0a\u53ef\u4ee5\u5b9e\u73b0\uff0c\u4f46\u6280\u672f\u9700\u8981\u4e3a\u4e1a\u52a1\u670d\u52a1\u3001\u4e3a\u4ea7\u54c1\u670d\u52a1\u3002<\/p>\n<h3>\u6280\u672f\u5206\u6790<\/h3>\n<ul>\n<li><strong>Bitmaps\u6700\u5927\u957f\u5ea6\u4f4d\u6570\u662f\u591a\u5c11\uff1f<\/strong><\/li>\n<\/ul>\n<p>\u7531\u4e8eString\u6570\u636e\u7c7b\u578b\u7684\u6700\u5927\u957f\u5ea6\u662f512M\uff0c\u6240\u4ee5String\u652f\u6301\u7684\u4f4d\u6570\u662f2^32\u4f4d\u3002512M\u8868\u793a\u5b57\u8282<code>&lt;Byte&gt;<\/code>\u957f\u5ea6\uff0c\u6362\u7b97\u6210\u4f4d<bit>\u9700\u8981\u4e58\u4ee58\uff0c\u5373<code>512 * 2^10 * 2^10 * 8 = 2^32<\/code><\/p>\n<ul>\n<li><strong>Bitmaps\u53ef\u4ee5\u652f\u6301\u8d85\u8fc7512M\u7684\u6570\u636e\u5417\uff1f<\/strong><\/li>\n<\/ul>\n<p>Strings\u7684\u6700\u5927\u957f\u5ea6\u662f512M\uff0c\u8fd8\u80fd\u5b58\u66f4\u5927\u7684\u6570\u636e\uff1f\u5f53\u7136\u4e0d\u80fd\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u6362\u79cd\u5b9e\u73b0\u601d\u8def\uff0c\u6587\u4e2d\u5176\u5b9e\u5df2\u63d0\u53ca\uff0c\u6211\u4eec\u56de\u987e\u4e0b\uff1a\u5c06\u5927key\u62c6\u5206\u6210\u591a\u4e2a\u5c0fkey\u3002\u5e38\u89c4\u5efa\u8bae\u662f\u5355key\u4ec5\u5b58\u50a81M\u4fe1\u606f\uff0c\u5219\u53ef\u901a\u8fc7<code>bit\/M<\/code>\u8ba1\u7b97\u51fakey\u7684\u540d\u5b57\uff0c\u901a\u8fc7<code>bit MOD M<\/code>\uff08MOD\u8868\u793a\u53d6\u4f59\uff09\u8ba1\u7b97\u51fa\u7b2c\u51e0\u4e2abit\u4f4d\u3002\u5047\u8bbe<code>bit\/M = 2<\/code>\uff0c<code>bit MOD M = 666<\/code>\uff0c\u5219\u5bf9\u6b64\u4f4d\u7684\u64cd\u4f5c\u5b9e\u9645\u662f\u64cd\u4f5ckey\u540d\u5b57\u4e3a<code>xxx:2<\/code>\u7684key\uff0c\u4f4d\u6570\u662f\u7b2c666\u7684\u4f4d\u3002<\/p>\n<p>\u6309\u7167\u8fd9\u79cd\u601d\u8def\uff0c\u5b58\u50a8\u7684\u5927\u5c0f\u5b8c\u5168\u4e0d\u53d7\u9650\u5566\u3002<\/p>\n<blockquote>\n<p>\u8f6c\u8f7d\u81f3\uff1a<a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/my.oschina.net\/zxiaofan\/blog\/4358220\">https:\/\/my.oschina.net\/zxiaofan\/blog\/4358220<\/a><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u4eac\u4e1c\u7b7e\u5230\u65e5\u5386\u7684\u4ea7\u54c1\u903b\u8f91 \u7b7e\u5230\u65e5\u5386\u4ec5\u5c55\u793a\u5f53\u6708\u7b7e\u5230\u6570\u636e \u7b7e\u5230\u65e5\u5386\u9700\u5c55\u793a\u6700\u8fd1\u8fde\u7eed\u7b7e\u5230\u5929\u6570 \u5047\u8bbe\u5f53\u524d\u65e5\u671f\u662f202006 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-1994","post","type-post","status-publish","format-standard","hentry","category-redis"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1994","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1994"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1994\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}