{"id":10007030,"date":"2022-12-30T14:52:33","date_gmt":"2022-12-30T06:52:33","guid":{"rendered":"https:\/\/ityet.com\/?p=10007030"},"modified":"2022-12-30T14:52:33","modified_gmt":"2022-12-30T06:52:33","slug":"mysql%e7%b4%a2%e5%bc%95%e8%a6%86%e7%9b%96","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10007030","title":{"rendered":"Mysql\u7d22\u5f15\u8986\u76d6"},"content":{"rendered":"<h5>\u4f5c\u8005\uff1a\u4eac\u4e1c\u96f6\u552e \u5b59\u6d9b<\/h5>\n<h2><strong>1.\u4ec0\u4e48\u662f\u8986\u76d6\u7d22\u5f15<\/strong><\/h2>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u521b\u5efa\u7d22\u5f15\u7684\u65f6\u5019\u53ea\u5173\u6ce8where\u6761\u4ef6\uff0c\u4e0d\u8fc7\u8fd9\u53ea\u662f\u7d22\u5f15\u4f18\u5316\u7684\u4e00\u4e2a\u65b9\u5411\u3002\u4f18\u79c0\u7684\u7d22\u5f15\u8bbe\u8ba1\u5e94\u8be5\u7eb5\u89c2\u6574\u4e2a\u67e5\u8be2\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662fwhere\u6761\u4ef6\u90e8\u5206\uff0c\u8fd8\u5e94\u8be5\u5173\u6ce8\u67e5\u8be2\u6240\u5305\u542b\u7684\u5217\u3002\u7d22\u5f15\u786e\u5b9e\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u67e5\u627e\u6570\u636e\u65b9\u5f0f\uff0c\u4f46\u662fmysql\u4e5f\u53ef\u4ee5\u4ece\u7d22\u5f15\u4e2d\u76f4\u63a5\u83b7\u53d6\u6570\u636e\uff0c\u8fd9\u6837\u5c31\u4e0d\u5728\u9700\u8981\u8bfb\u6570\u636e\u884c\u4e86\u3002 <strong>\u8986\u76d6\u7d22\u5f15\uff08covering index\uff09<\/strong> \u6307\u4e00\u4e2a\u67e5\u8be2\u8bed\u53e5\u7684\u6267\u884c\u53ea\u9700\u8981\u4ece\u8f85\u52a9\u7d22\u5f15\u4e2d\u5c31\u53ef\u4ee5\u5f97\u5230\u67e5\u8be2\u8bb0\u5f55\uff0c\u800c\u4e0d\u9700\u8981\u56de\u8868\uff0c\u53bb\u67e5\u8be2\u805a\u96c6\u7d22\u5f15\u4e2d\u7684\u8bb0\u5f55\u3002\u53ef\u4ee5\u79f0\u4e4b\u4e3a\u5b9e\u73b0\u4e86\u7d22\u5f15\u8986\u76d6\u3002 \u5728mysql\u6570\u636e\u5e93\u4e2d\uff0c\u5982\u4f55\u770b\u51fa\u4e00\u4e2asql\u662f\u5426\u5b9e\u73b0\u4e86\u7d22\u5f15\u8986\u76d6\u5462\uff1f<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201336\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p>\u4ece\u6267\u884c\u8ba1\u5212\u770b\uff0cExtra\u7684\u4fe1\u606f\u4e3a<strong>using index<\/strong> \uff0c\u5373\u7528\u5230\u4e86\u7d22\u5f15\u8986\u76d6\u3002<\/p>\n<h2><strong>2.\u8986\u76d6\u7d22\u5f15\u4e3a\u4ec0\u4e48\u5feb<\/strong><\/h2>\n<p>innodb\u5b58\u50a8\u5f15\u64ce\u5e95\u5c42\u5b9e\u73b0\u5305\u62ecB+\u6811\u7d22\u5f15\u548c\u54c8\u5e0c\u7d22\u5f15\uff0cinnodb\u5b58\u50a8\u5f15\u64ce\u9ed8\u8ba4\u7684\u7d22\u5f15\u6a21\u578b\/\u7ed3\u6784\u662fB+\u6811\uff0c\u6240\u4ee5\u5927\u90e8\u5206\u65f6\u5019\u6211\u4eec\u4f7f\u7528\u7684\u90fd\u662fB+\u6811\u7d22\u5f15\uff0c\u56e0\u4e3a\u5b83\u826f\u597d\u7684\u6027\u80fd\u548c\u7279\u6027\u66f4\u9002\u5408\u4e8e\u6784\u5efa\u9ad8\u5e76\u53d1\u7cfb\u7edf\u3002\u6839\u636e\u7d22\u5f15\u7684\u5b58\u50a8\u65b9\u5f0f\u6765\u5212\u5206\uff0c\u7d22\u5f15\u53ef\u4ee5\u5206\u4e3a<strong>\u805a\u7c07\u7d22\u5f15\u548c\u975e\u805a\u7c07\u7d22\u5f15<\/strong>\u3002\u805a\u7c07\u7d22\u5f15\u7684\u7279\u70b9\u662f\u53f6\u5b50\u8282\u70b9\u5305\u542b\u4e86\u5b8c\u6574\u7684\u8bb0\u5f55\u884c\uff0c\u800c\u975e\u805a\u7c07\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u53ea\u6709\u7d22\u5f15\u5b57\u6bb5\u548c\u4e3b\u952eID\u3002\u975e\u805a\u7c07\u7d22\u5f15\u4e2d\u56e0\u4e3a\u4e0d\u542b\u6709\u5b8c\u6574\u7684\u6570\u636e\u4fe1\u606f\uff0c\u67e5\u627e\u5b8c\u6574\u7684\u6570\u636e\u8bb0\u5f55\u9700\u8981\u56de\u8868\uff0c\u6240\u4ee5\u4e00\u6b21\u67e5\u8be2\u64cd\u4f5c\u5b9e\u9645\u4e0a\u8981\u505a\u4e24\u6b21\u7d22\u5f15\u67e5\u8be2\u3002\u800c\u5982\u679c\u6240\u6709\u7684\u7d22\u5f15\u67e5\u8be2\u90fd\u8981\u7ecf\u8fc7\u4e24\u6b21\u624d\u80fd\u67e5\u5230\uff0c\u90a3\u4e48\u80af\u5b9a\u4f1a\u5f15\u8d77\u6548\u7387\u4e0b\u964d\uff0c\u6bd5\u7adf\u80fd\u5c11\u67e5\u4e00\u6b21\u5c31\u5c11\u67e5\u4e00\u6b21\u3002<\/p>\n<p>\u8986\u76d6\u7d22\u5f15\u5c31\u5b9e\u73b0\u4e86\u4ece\u975e\u805a\u7c07\u7d22\u5f15\u4e2d\u76f4\u63a5\u83b7\u53d6\u6570\u636e\uff0c\u6240\u4ee5\u6548\u7387\u4f1a\u63d0\u5347\u3002<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201337\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<h2><strong>3.SQL\u4f18\u5316\u573a\u666f<\/strong><\/h2>\n<h3><strong>\uff081\uff09\u65e0where\u6761\u4ef6<\/strong><\/h3>\n<p>\u8bf7\u770b\u4e0b\u9762\u7684sql<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201338\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201339\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p>\u6267\u884c\u8ba1\u5212\u4e2d\uff0ctype\u4e3aALL\uff0c\u4ee3\u8868\u8fdb\u884c\u4e86\u5168\u8868\u626b\u63cf\uff0c\u626b\u63cf\u884c\u6570\u8fbe\u5230\u4e8626274308\uff0c\u6240\u4ee5\u6267\u884c\u65f6\u95f4\u4e3a9.25\u79d2,\u4e5f\u662f\u6b63\u5e38\u7684\u3002<\/p>\n<p>\u90a3\u4e48\u5982\u4f55\u4f18\u5316\uff1f\u4f18\u5316\u63aa\u65bd\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u5bf9\u67e5\u8be2\u5217\u5efa\u7acb\u7d22\u5f15\u3002\u5982\u4e0b\uff0c<\/p>\n<p><strong>alter table instance_space_history add index idx_org1(org1);<\/strong> \u770b\u6dfb\u52a0\u7d22\u5f15\u540e\u7684\u6267\u884c\u8ba1\u5212<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201340\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p>Possible_keys\u4e3anull\uff0c\u8bf4\u660e\u6ca1\u6709where\u6761\u4ef6\u65f6\u4f18\u5316\u5668\u65e0\u6cd5\u901a\u8fc7\u7d22\u5f15\u68c0\u7d22\u6570\u636e\uff1b<\/p>\n<p>\u4f46\u662f\u770bextra\u7684\u4fe1\u606f Using index\uff0c\u5373\u4ece\u7d22\u5f15\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u51cf\u5c11\u4e86\u8bfb\u53d6\u7684\u6570\u636e\u5757\u7684\u6570\u91cf \u3002<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201341\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p>\u5728\u770b\u5b9e\u9645\u4f18\u5316\u6548\u679c\uff0c\u626b\u63cf\u884c\u6570\u6ca1\u53d8\uff0c\u4f46\u662f\u4f7f\u7528\u4e86\u8986\u76d6\u7d22\u5f15\uff0c\u67e5\u8be2\u65f6\u95f4\u4ece9.25\u79d2\u7f29\u77ed\u52305.67\u79d2\u3002 <strong>\u601d\u8003\uff1a<\/strong> \u65e0where\u6761\u4ef6\u7684\u67e5\u8be2\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u5b9e\u73b0\u7d22\u5f15\u8986\u76d6\u67e5\u8be2\u3002\u4f46\u524d\u63d0\u6761\u4ef6\u662f\uff0c\u67e5\u8be2\u8fd4\u56de\u7684\u5b57\u6bb5\u6570\u8db3\u591f\u5c11\uff0c\u66f4\u4e0d\u7528\u8bf4select *\u4e4b\u7c7b\u7684\u4e86\u3002\u6bd5\u7adf\uff0c\u5efa\u7acbkey length\u8fc7\u957f\u7684\u7d22\u5f15\uff0c\u59cb\u7ec8\u4e0d\u662f\u4e00\u4ef6\u597d\u4e8b\u60c5\u3002<\/p>\n<h3><strong>\uff082\uff09where\u6761\u4ef6\u533a\u5206\u5ea6\u4f4e<\/strong><\/h3>\n<p>\u4f7f\u7528\u533a\u5206\u5ea6\u6781\u4f4e\u7684\u5b57\u6bb5\u4f5c\u4e3awhere\u6761\u4ef6\u7684\u67e5\u8be2SQL\uff0c\u5bf9\u4e8edba\u6216\u8005\u7814\u53d1\u4eba\u5458\u4f18\u5316\u4e00\u76f4\u662f\u6bd4\u8f83\u5934\u75bc\u7684\u95ee\u9898\uff0c\u8fd9\u91cc\u4ecb\u7ecd\u4e00\u79cd\u601d\u8def\uff0c\u5c31\u662f\u901a\u8fc7\u7d22\u5f15\u8986\u76d6\u6765\u4f18\u5316 \u3002 t_material_image\u662f\u4e00\u5f208\u4ebf\u591a\u6570\u636e\u7684\u5927\u8868\uff0cwhere\u6761\u4ef6\u7684<strong>material_type<\/strong>\u5b57\u6bb5\u533a\u5206\u5ea6\u5f88\u4f4e\uff0c\u4e0b\u9762\u662f\u6ca1\u52a0\u4efb\u4f55\u7d22\u5f15\u7684\u6267\u884c\u8ba1\u5212\u548c\u67e5\u8be2\u65f6\u95f4\uff087.35\u79d2\uff09\u3002<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201342\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201343\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p>\u6700\u5bb9\u6613\u60f3\u5230\u7684\u4f18\u5316\u65b9\u5f0f\uff0c\u5c31\u662f\u7ed9where\u6761\u4ef6\u7684\u5b57\u6bb5\u52a0\u7d22\u5f15\uff0c\u6dfb\u52a0\u7d22\u5f15\u8bed\u53e5\u5982\u4e0b\uff1a <strong>alter table t_material_image add index idx_material_type (material_type);<\/strong><\/p>\n<p>\u518d\u6765\u770b\u6267\u884c\u8ba1\u5212<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201344\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p>\u901a\u8fc7\u6267\u884c\u8ba1\u5212\u548c\u6d4b\u8bd5\u7ed3\u679c\u770b\uff0c\u7684\u786e\u662f\u6709\u6548\u679c\u7684\uff0c\u4f46\u662f\u8d70\u7d22\u5f15\u540e\u7684\u67e5\u8be2\u6548\u7387\u4f9d\u7136\u4e0d\u80fd\u6ee1\u8db3\u6211\u4eec\u671f\u671b\u3002 \u7136\u540e\u8bd5\u7740\u7ed9<strong>material_type,material_id<\/strong>\u6dfb\u52a0\u8054\u5408\u7d22\u5f15\u3002 alter table t_material_image add index idx_material_id_type (material_type,material_id);<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201345\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201346\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p>\u4ece\u8fd9\u4e2asql\u7684\u6267\u884c\u8ba1\u5212\u770b\uff0c\u51fa\u73b0Using index\uff0c\u5b9e\u73b0\u4e86\u7d22\u5f15\u8986\u76d6\uff1b\u518d\u770b\u6267\u884c\u65f6\u95f4\uff0c\u6027\u80fd\u5f97\u5230\u4e86\u5de8\u5927\u7684\u63d0\u5347\uff0c\u5c45\u7136\u5df2\u7ecf\u53ef\u4ee5\u8dd1\u52300.85s\u5de6\u53f3\u4e86\u3002<\/p>\n<p><strong>\u601d\u8003\uff1a<\/strong><\/p>\n<p>\u5f53where\u6761\u4ef6\u5b57\u6bb5\u533a\u5206\u5ea6\u4f4e\uff08\u8fc7\u6ee4\u6027\u5dee\uff09\uff0c\u4e14where\u6761\u4ef6\u4e0e\u67e5\u8be2\u5b57\u6bb5\u603b\u6570\u8f83\u5c11\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528\u7d22\u5f15\u8986\u76d6\u4f18\u5316\uff0c\u662f\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002<\/p>\n<h3><strong>\uff083\uff09\u67e5\u8be2\u4ec5\u9009\u62e9\u4e3b\u952e<\/strong><\/h3>\n<p>\u5bf9\u4e8eInnodb\u7684\u8f85\u52a9\u7d22\u5f15\uff0c\u5b83\u7684\u53f6\u5b50\u8282\u70b9\u5b58\u50a8\u7684\u662f\u7d22\u5f15\u503c\u548c\u6307\u5411\u4e3b\u952e\u7d22\u5f15\u7684\u4f4d\u7f6e\uff0c\u7136\u540e\u9700\u8981\u901a\u8fc7\u4e3b\u952e\u5728\u67e5\u8be2\u8868\u7684\u5b57\u6bb5\u503c\uff0c\u6240\u4ee5\u8f85\u52a9\u7d22\u5f15\u5b58\u50a8\u4e86\u4e3b\u952e\u7684\u503c\u3002\u5982\u679c\u67e5\u8be2\u6240\u9009\u62e9\u7684\u5217\u53ea\u6709\u4e3b\u952e\uff0c\u5e94\u8be5\u8003\u8651\u901a\u8fc7\u7d22\u5f15\u8986\u76d6\u4f18\u5316\u3002 \u770b\u4e0b\u9762\u7684\u4e24\u4e2asql\uff0c\u5b57\u6bb5 <strong>pin \u548ccompletion_time<\/strong>\u6709\u8054\u5408\u7d22\u5f15\uff0cwhere\u6761\u4ef6\u5dee\u522b\u53ea\u6709<strong>comment_voucher_status = 0<\/strong>\uff0c\u4f46\u662f\u6267\u884c\u65f6\u95f4\u5dee\u8ddd\u5de8\u5927\uff08\u7b2c\u4e00\u4e2asql0.58s,\u7b2c\u4e8c\u4e2asql0.2s\uff09\uff0c\u4e3a\u4ec0\u4e48\u5462\uff1f\u662f\u4e0d\u662f\u5f88\u56f0\u60d1<\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201347\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201348\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201349\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043201350\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<\/p>\n<p>\u6211\u4eec\u6765\u770b\u6267\u884c\u8ba1\u5212\uff0c\u4e3b\u8981\u5dee\u522b\u4f53\u73b0\u5728extra\uff0c\u7b2c\u4e00\u4e2asql\u7528\u5230<strong>Using index condition<\/strong>\uff0c\u800c\u7b2c\u4e8c\u4e2asql\u7528\u5230<strong>Using index<\/strong>\uff0c\u56e0\u4e3apin\u548ccompletion_time\u6709\u8054\u5408\u7d22\u5f15\uff0c\u800c\u4e14\u67e5\u8be2\u7ed3\u679c\u53ea\u9009\u62e9\u4e86\u4e3b\u952eid\uff0c\u6240\u4ee5\u7b2c\u4e8c\u4e2asql\u8986\u76d6\u4e86\u6240\u6709\u7684where\u6761\u4ef6\u5b57\u6bb5\u548c\u67e5\u8be2\u7ed3\u679c\u9009\u62e9\u5b57\u6bb5\uff0c\u6545\u5b9e\u73b0\u4e86\u7d22\u5f15\u8986\u76d6\u3002 <strong>\u601d\u8003\uff1a<\/strong><\/p>\n<p>\u5f53\u67e5\u8be2\u5b57\u6bb5\u53ea\u6709\u4e3b\u952e\u65f6\uff0c\u66f4\u5bb9\u6613\u5b9e\u73b0\u7d22\u5f15\u8986\u76d6\uff0c\u56e0\u4e3a\u7d22\u5f15\u53ea\u8981\u8986\u76d6where\u6761\u4ef6\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u7d22\u5f15\u8986\u76d6\u3002<\/p>\n<h2><strong>4.\u603b\u7ed3\u4e0e\u5efa\u8bae<\/strong><\/h2>\n<p><strong>\u7d22\u5f15\u7684\u6838\u5fc3\u4f5c\u7528\uff1a<\/strong> \uff081\uff09\u901a\u8fc7\u7d22\u5f15\u68c0\u7d22\u4ec5\u9700\u8981\u6570\u636e \uff082\uff09\u4ece\u7d22\u5f15\u4e2d\u76f4\u63a5\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c <br \/><strong>\u7d22\u5f15\u8986\u76d6\u7684\u6761\u4ef6<\/strong>\uff1a \uff081\uff09Select\u67e5\u8be2\u7684\u8fd4\u56de\u5217\u5305\u542b\u5728\u7d22\u5f15\u5217\u4e2d \uff082\uff09\u6709where\u6761\u4ef6\u65f6\uff0cwhere\u6761\u4ef6\u4e2d\u8981\u5305\u542b\u7d22\u5f15\u5217\u6216\u590d\u5408\u7d22\u5f15\u7684\u524d\u5bfc\u5217 \uff083\uff09\u67e5\u8be2\u7ed3\u679c\u7684\u603b\u5b57\u6bb5\u957f\u5ea6\u53ef\u4ee5\u63a5\u53d7<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000043201334\">https:\/\/segmentfault.com\/a\/1190000043201334<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f5c\u8005\uff1a\u4eac\u4e1c\u96f6\u552e \u5b59\u6d9b 1.\u4ec0\u4e48\u662f\u8986\u76d6\u7d22\u5f15 \u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u521b\u5efa\u7d22\u5f15\u7684\u65f6\u5019\u53ea\u5173\u6ce8where\u6761\u4ef6\uff0c\u4e0d\u8fc7\u8fd9\u53ea\u662f\u7d22\u5f15\u4f18 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10007030","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10007030","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10007030"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10007030\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10007030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10007030"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10007030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}