{"id":75806,"date":"2024-10-16T01:23:18","date_gmt":"2024-10-15T17:23:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75806\/"},"modified":"2024-10-16T01:23:18","modified_gmt":"2024-10-15T17:23:18","slug":"mysql-%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e8%ae%8a%e9%87%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75806\/","title":{"rendered":"MySQL \u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf"},"content":{"rendered":"<h1 id=\"mysql-%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e8%ae%8a%e9%87%8f-lCLQSYwWWb\">MySQL \u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u67e5\u8a62\u6027\u80fd\u662f\u5f71\u97ff\u61c9\u7528\u7a0b\u5e8f\u6548\u7387\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002MySQL \u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u512a\u5316\u67e5\u8a62\u6027\u80fd\u7684\u65b9\u5f0f\uff0c\u5176\u4e2d\u67e5\u8a62\u7de9\u5b58\uff08Query Cache\uff09\u662f\u4e00\u500b\u91cd\u8981\u7684\u529f\u80fd\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e MySQL \u7684\u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7406\u89e3\u5176\u904b\u4f5c\u539f\u7406\u53ca\u914d\u7f6e\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%ef%bc%9f-lCLQSYwWWb\">\u4ec0\u9ebc\u662f\u67e5\u8a62\u7de9\u5b58\uff1f<\/h2>\n<p>\u67e5\u8a62\u7de9\u5b58\u662f MySQL \u4e2d\u7684\u4e00\u500b\u529f\u80fd\uff0c\u65e8\u5728\u63d0\u9ad8\u67e5\u8a62\u7684\u57f7\u884c\u6548\u7387\u3002\u7576\u4e00\u500b\u67e5\u8a62\u88ab\u57f7\u884c\u6642\uff0cMySQL \u6703\u5c07\u8a72\u67e5\u8a62\u7684\u7d50\u679c\u5b58\u5132\u5728\u7de9\u5b58\u4e2d\u3002\u7576\u76f8\u540c\u7684\u67e5\u8a62\u518d\u6b21\u88ab\u57f7\u884c\u6642\uff0cMySQL \u53ef\u4ee5\u76f4\u63a5\u5f9e\u7de9\u5b58\u4e2d\u8fd4\u56de\u7d50\u679c\uff0c\u800c\u7121\u9700\u91cd\u65b0\u57f7\u884c\u67e5\u8a62\uff0c\u9019\u6a23\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u7684\u97ff\u61c9\u6642\u9593\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-lCLQSYwWWb\">\u67e5\u8a62\u7de9\u5b58\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u67e5\u8a62\u7de9\u5b58\u7684\u5de5\u4f5c\u539f\u7406\u76f8\u5c0d\u7c21\u55ae\u3002\u7576\u4e00\u500b\u67e5\u8a62\u88ab\u57f7\u884c\u6642\uff0cMySQL \u6703\u6aa2\u67e5\u8a72\u67e5\u8a62\u662f\u5426\u5df2\u7d93\u5b58\u5728\u65bc\u7de9\u5b58\u4e2d\u3002\u5982\u679c\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u8fd4\u56de\u7de9\u5b58\u4e2d\u7684\u7d50\u679c\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u57f7\u884c\u67e5\u8a62\u4e26\u5c07\u7d50\u679c\u5b58\u5165\u7de9\u5b58\u3002\u9019\u4e00\u904e\u7a0b\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u4f86\u7406\u89e3\uff1a<\/p>\n<ul>\n<li>\u57f7\u884c\u67e5\u8a62\u3002<\/li>\n<li>\u6aa2\u67e5\u67e5\u8a62\u7de9\u5b58\u3002<\/li>\n<li>\u5982\u679c\u67e5\u8a62\u7d50\u679c\u5b58\u5728\uff0c\u8fd4\u56de\u7de9\u5b58\u7d50\u679c\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u57f7\u884c\u67e5\u8a62\u4e26\u66f4\u65b0\u7de9\u5b58\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e8%ae%8a%e9%87%8f-lCLQSYwWWb\">\u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf<\/h2>\n<p>MySQL \u63d0\u4f9b\u4e86\u4e00\u4e9b\u8b8a\u91cf\u4f86\u63a7\u5236\u67e5\u8a62\u7de9\u5b58\u7684\u884c\u70ba\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u91cd\u8981\u7684\u67e5\u8a62\u7de9\u5b58\u8b8a\u91cf\uff1a<\/p>\n<ul>\n<li><code>query_cache_type<\/code>\uff1a\u6b64\u8b8a\u91cf\u63a7\u5236\u67e5\u8a62\u7de9\u5b58\u7684\u555f\u7528\u72c0\u614b\u3002\u53ef\u4ee5\u8a2d\u7f6e\u70ba\u4ee5\u4e0b\u503c\uff1a\n<ul>\n<li><code>0<\/code>\uff1a\u7981\u7528\u67e5\u8a62\u7de9\u5b58\u3002<\/li>\n<li><code>1<\/code>\uff1a\u555f\u7528\u67e5\u8a62\u7de9\u5b58\u3002<\/li>\n<li><code>2<\/code>\uff1a\u50c5\u5c0d\u660e\u78ba\u4f7f\u7528 <code>SQL_CACHE<\/code> \u7684\u67e5\u8a62\u555f\u7528\u7de9\u5b58\u3002<\/li>\n<\/ul>\n<\/li>\n<li><code>query_cache_size<\/code>\uff1a\u6b64\u8b8a\u91cf\u5b9a\u7fa9\u67e5\u8a62\u7de9\u5b58\u7684\u5927\u5c0f\uff08\u4ee5\u5b57\u7bc0\u70ba\u55ae\u4f4d\uff09\u3002\u5982\u679c\u8a2d\u7f6e\u70ba 0\uff0c\u5247\u67e5\u8a62\u7de9\u5b58\u5c07\u88ab\u7981\u7528\u3002<\/li>\n<li><code>query_cache_limit<\/code>\uff1a\u6b64\u8b8a\u91cf\u5b9a\u7fa9\u55ae\u500b\u67e5\u8a62\u7d50\u679c\u7684\u6700\u5927\u5927\u5c0f\uff0c\u8d85\u904e\u6b64\u5927\u5c0f\u7684\u67e5\u8a62\u7d50\u679c\u5c07\u4e0d\u6703\u88ab\u7de9\u5b58\u3002<\/li>\n<li><code>query_cache_min_res_unit<\/code>\uff1a\u6b64\u8b8a\u91cf\u5b9a\u7fa9\u67e5\u8a62\u7de9\u5b58\u4e2d\u6700\u5c0f\u7684\u5167\u5b58\u55ae\u4f4d\u3002<\/li>\n<li><code>query_cache_wlock_invalidate<\/code>\uff1a\u6b64\u8b8a\u91cf\u63a7\u5236\u5728\u5beb\u9396\u5b9a\u671f\u9593\u662f\u5426\u4f7f\u67e5\u8a62\u7de9\u5b58\u5931\u6548\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e9%85%8d%e7%bd%ae%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98-lCLQSYwWWb\">\u5982\u4f55\u914d\u7f6e\u67e5\u8a62\u7de9\u5b58<\/h2>\n<p>\u8981\u914d\u7f6e MySQL \u7684\u67e5\u8a62\u7de9\u5b58\uff0c\u53ef\u4ee5\u901a\u904e\u4fee\u6539 MySQL \u7684\u914d\u7f6e\u6587\u4ef6\uff08\u901a\u5e38\u662f <code>my.cnf<\/code> \u6216 <code>my.ini<\/code>\uff09\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u914d\u7f6e\u793a\u4f8b\uff1a<\/p>\n<pre><code>[mysqld]\nquery_cache_type = 1\nquery_cache_size = 1048576\nquery_cache_limit = 1048576\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u555f\u7528\u4e86\u67e5\u8a62\u7de9\u5b58\uff0c\u4e26\u5c07\u5176\u5927\u5c0f\u8a2d\u7f6e\u70ba 1MB\uff0c\u55ae\u500b\u67e5\u8a62\u7d50\u679c\u7684\u6700\u5927\u5927\u5c0f\u4e5f\u8a2d\u7f6e\u70ba 1MB\u3002\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u5f8c\uff0c\u9700\u8981\u91cd\u555f MySQL \u670d\u52d9\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%b7%a9%e5%ad%98%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-lCLQSYwWWb\">\u67e5\u8a62\u7de9\u5b58\u7684\u512a\u7f3a\u9ede<\/h2>\n<p>\u96d6\u7136\u67e5\u8a62\u7de9\u5b58\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u4e5f\u6709\u5176\u7f3a\u9ede\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u7de9\u5b58\u7684\u4e00\u4e9b\u512a\u7f3a\u9ede\uff1a<\/p>\n<h3 id=\"%e5%84%aa%e9%bb%9e-lCLQSYwWWb\">\u512a\u9ede<\/h3>\n<ul>\n<li>\u6e1b\u5c11\u67e5\u8a62\u57f7\u884c\u6642\u9593\uff0c\u63d0\u5347\u6027\u80fd\u3002<\/li>\n<li>\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u8ca0\u8f09\uff0c\u7279\u5225\u662f\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-lCLQSYwWWb\">\u7f3a\u9ede<\/h3>\n<ul>\n<li>\u5728\u9ad8\u983b\u7e41\u66f4\u65b0\u7684\u6578\u64da\u5eab\u4e2d\uff0c\u67e5\u8a62\u7de9\u5b58\u7684\u6548\u76ca\u53ef\u80fd\u6703\u964d\u4f4e\uff0c\u56e0\u70ba\u6bcf\u6b21\u66f4\u65b0\u90fd\u6703\u4f7f\u7de9\u5b58\u5931\u6548\u3002<\/li>\n<li>\u9700\u8981\u984d\u5916\u7684\u5167\u5b58\u4f86\u5b58\u5132\u7de9\u5b58\u7d50\u679c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-lCLQSYwWWb\">\u7e3d\u7d50<\/h2>\n<p>MySQL 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