{"id":180418,"date":"2024-11-09T10:06:19","date_gmt":"2024-11-09T02:06:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/180418\/"},"modified":"2024-11-09T10:06:19","modified_gmt":"2024-11-09T02:06:19","slug":"%e6%b7%b1%e5%ba%a6%e8%a7%a3%e6%9e%90innodb%e8%a8%98%e9%8c%84%e6%a0%bc%e5%bc%8f%e6%ba%90%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/180418\/","title":{"rendered":"\u6df1\u5ea6\u89e3\u6790Innodb\u8a18\u9304\u683c\u5f0f\u6e90\u78bc"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%ba%a6%e8%a7%a3%e6%9e%90innodb%e8%a8%98%e9%8c%84%e6%a0%bc%e5%bc%8f%e6%ba%90%e7%a2%bc-vTJmdJwYee\">\u6df1\u5ea6\u89e3\u6790Innodb\u8a18\u9304\u683c\u5f0f\u6e90\u78bc<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cInnodb\u662fMySQL\u7684\u4e3b\u8981\u5b58\u5132\u5f15\u64ce\u4e4b\u4e00\uff0c\u56e0\u5176\u652f\u6301\u4e8b\u52d9\u3001\u884c\u7d1a\u9396\u5b9a\u548c\u5916\u9375\u7b49\u7279\u6027\u800c\u5ee3\u53d7\u6b61\u8fce\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eInnodb\u7684\u8a18\u9304\u683c\u5f0f\u6e90\u78bc\uff0c\u5e6b\u52a9\u8b80\u8005\u7406\u89e3\u5176\u5167\u90e8\u904b\u4f5c\u53ca\u8a2d\u8a08\u7406\u5ff5\u3002<\/p>\n<h2 id=\"innodb%e7%9a%84%e8%a8%98%e9%8c%84%e6%a0%bc%e5%bc%8f%e6%a6%82%e8%bf%b0-vTJmdJwYee\">Innodb\u7684\u8a18\u9304\u683c\u5f0f\u6982\u8ff0<\/h2>\n<p>Innodb\u7684\u8a18\u9304\u683c\u5f0f\u4e3b\u8981\u7528\u65bc\u5b58\u5132\u6578\u64da\u548c\u7d22\u5f15\u3002\u5b83\u7684\u8a2d\u8a08\u65e8\u5728\u63d0\u9ad8\u6027\u80fd\u548c\u6578\u64da\u5b8c\u6574\u6027\u3002Innodb\u4f7f\u7528\u7684\u8a18\u9304\u683c\u5f0f\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u4e3b\u8981\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u9801\uff08Data Page\uff09<\/strong>: \u6578\u64da\u9801\u662fInnodb\u5b58\u5132\u6578\u64da\u7684\u57fa\u672c\u55ae\u4f4d\uff0c\u6bcf\u500b\u9801\u9762\u901a\u5e38\u70ba16KB\u3002<\/li>\n<li><strong>\u8a18\u9304\uff08Record\uff09<\/strong>: \u8a18\u9304\u662f\u6578\u64da\u9801\u4e2d\u7684\u5177\u9ad4\u6578\u64da\u689d\u76ee\uff0c\u5305\u542b\u4e86\u884c\u7684\u6240\u6709\u5217\u3002<\/li>\n<li><strong>\u884c\u683c\u5f0f\uff08Row Format\uff09<\/strong>: \u884c\u683c\u5f0f\u6c7a\u5b9a\u4e86\u8a18\u9304\u5728\u9801\u9762\u4e2d\u7684\u5b58\u5132\u65b9\u5f0f\uff0c\u5e38\u898b\u7684\u884c\u683c\u5f0f\u6709Compact\u3001Redundant\u548cDynamic\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a1%8c%e6%a0%bc%e5%bc%8f%e7%9a%84%e8%a9%b3%e7%b4%b0%e8%a7%a3%e6%9e%90-vTJmdJwYee\">\u884c\u683c\u5f0f\u7684\u8a73\u7d30\u89e3\u6790<\/h2>\n<p>\u884c\u683c\u5f0f\u662fInnodb\u8a18\u9304\u683c\u5f0f\u7684\u6838\u5fc3\uff0c\u5f71\u97ff\u8457\u6578\u64da\u7684\u5b58\u5132\u6548\u7387\u548c\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u4e3b\u8981\u7684\u884c\u683c\u5f0f\uff1a<\/p>\n<h3 id=\"1-compact%e6%a0%bc%e5%bc%8f-vTJmdJwYee\">1. Compact\u683c\u5f0f<\/h3>\n<p>Compact\u683c\u5f0f\u662fInnodb\u7684\u9ed8\u8a8d\u884c\u683c\u5f0f\u3002\u5b83\u901a\u904e\u58d3\u7e2e\u6578\u64da\u4f86\u6e1b\u5c11\u5b58\u5132\u7a7a\u9593\u7684\u4f7f\u7528\u3002Compact\u683c\u5f0f\u7684\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u8b8a\u9577\u5b57\u6bb5\u4f86\u5b58\u5132\u53ef\u8b8a\u9577\u5ea6\u7684\u6578\u64da\u3002<\/li>\n<li>\u5c07NULL\u503c\u7684\u5b58\u5132\u7a7a\u9593\u6700\u5c0f\u5316\u3002<\/li>\n<li>\u5728\u9801\u9762\u4e2d\u4f7f\u7528\u6307\u91dd\u4f86\u5f15\u7528\u9577\u5ea6\u8d85\u904e\u4e00\u5b9a\u9650\u5236\u7684\u6578\u64da\u3002<\/li>\n<\/ul>\n<h3 id=\"2-redundant%e6%a0%bc%e5%bc%8f-vTJmdJwYee\">2. Redundant\u683c\u5f0f<\/h3>\n<p>Redundant\u683c\u5f0f\u662f\u8f03\u820a\u7684\u884c\u683c\u5f0f\uff0c\u4e3b\u8981\u7528\u65bc\u5411\u5f8c\u517c\u5bb9\u3002\u5176\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u6bcf\u500b\u8a18\u9304\u90fd\u5305\u542b\u5b8c\u6574\u7684\u5217\u4fe1\u606f\uff0c\u5c0e\u81f4\u5b58\u5132\u7a7a\u9593\u7684\u6d6a\u8cbb\u3002<\/li>\n<li>\u4e0d\u652f\u6301\u8b8a\u9577\u5b57\u6bb5\uff0c\u6240\u6709\u5b57\u6bb5\u5747\u70ba\u56fa\u5b9a\u9577\u5ea6\u3002<\/li>\n<\/ul>\n<h3 id=\"3-dynamic%e6%a0%bc%e5%bc%8f-vTJmdJwYee\">3. Dynamic\u683c\u5f0f<\/h3>\n<p>Dynamic\u683c\u5f0f\u5141\u8a31\u5c07\u9577\u5ea6\u8d85\u904e\u4e00\u5b9a\u9650\u5236\u7684\u5b57\u6bb5\u5b58\u5132\u5728\u9801\u9762\u5916\uff0c\u9019\u6a23\u53ef\u4ee5\u9032\u4e00\u6b65\u7bc0\u7701\u9801\u9762\u5167\u7684\u7a7a\u9593\u3002\u5176\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u652f\u6301\u5927\u6587\u672c\u548cBLOB\u985e\u578b\u7684\u6578\u64da\u3002<\/li>\n<li>\u5728\u9801\u9762\u4e2d\u50c5\u5b58\u5132\u6307\u5411\u5916\u90e8\u6578\u64da\u7684\u6307\u91dd\u3002<\/li>\n<\/ul>\n<h2 id=\"innodb%e8%a8%98%e9%8c%84%e6%a0%bc%e5%bc%8f%e7%9a%84%e6%ba%90%e7%a2%bc%e5%88%86%e6%9e%90-vTJmdJwYee\">Innodb\u8a18\u9304\u683c\u5f0f\u7684\u6e90\u78bc\u5206\u6790<\/h2>\n<p>\u8981\u6df1\u5165\u7406\u89e3Innodb\u7684\u8a18\u9304\u683c\u5f0f\uff0c\u67e5\u770b\u5176\u6e90\u78bc\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u95dc\u9375\u7684\u6e90\u78bc\u7247\u6bb5\uff0c\u5e6b\u52a9\u8b80\u8005\u7406\u89e3\u5176\u5be6\u73fe\u65b9\u5f0f\uff1a<\/p>\n<pre><code>\n\/* \u5b9a\u7fa9\u8a18\u9304\u7d50\u69cb *\/\ntypedef struct {\n    ulint    n_fields; \/* \u5b57\u6bb5\u6578\u91cf *\/\n    ulint    offset;   \/* \u504f\u79fb\u91cf *\/\n    \/* \u5176\u4ed6\u5b57\u6bb5 *\/\n} row_t;\n\n\/* \u8a18\u9304\u63d2\u5165\u51fd\u6578 *\/\nvoid row_insert(row_t *row) {\n    \/* \u63d2\u5165\u908f\u8f2f *\/\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u8a18\u9304\u7684\u57fa\u672c\u7d50\u69cb\u548c\u63d2\u5165\u51fd\u6578\u7684\u5b9a\u7fa9\u3002\u9019\u4e9b\u6e90\u78bc\u7247\u6bb5\u5c55\u793a\u4e86Innodb\u5982\u4f55\u7ba1\u7406\u548c\u64cd\u4f5c\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-vTJmdJwYee\">\u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u5c0dInnodb\u8a18\u9304\u683c\u5f0f\u6e90\u78bc\u7684\u6df1\u5165\u89e3\u6790\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u5176\u8a2d\u8a08\u7684\u7cbe\u5999\u4e4b\u8655\u3002\u7121\u8ad6\u662f\u884c\u683c\u5f0f\u7684\u9078\u64c7\u9084\u662f\u6578\u64da\u7684\u5b58\u5132\u65b9\u5f0f\uff0cInnodb\u90fd\u5728\u6027\u80fd\u548c\u7a7a\u9593\u5229\u7528\u4e0a\u505a\u51fa\u4e86\u5e73\u8861\u3002\u5c0d\u65bc\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u4f86\u8aaa\uff0c\u7406\u89e3\u9019\u4e9b\u7d30\u7bc0\u5c07\u6709\u52a9\u65bc\u66f4\u597d\u5730\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bcVPS\u3001<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eInnodb\u8a18\u9304\u683c\u5f0f\u7684\u6e90\u78bc\uff0c\u63ed\u793a\u5176\u7d50\u69cb\u8207\u904b\u4f5c\u539f\u7406\uff0c\u52a9\u60a8\u66f4\u597d\u7406\u89e3\u6578\u64da\u5eab\u6027\u80fd\u512a\u5316\u3002<\/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-180418","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180418","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=180418"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180418\/revisions"}],"predecessor-version":[{"id":180419,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180418\/revisions\/180419"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=180418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=180418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=180418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}