MySQL优化策略大全：提升数据库性能的十个技巧

MySQL\u7684\u4f18\u5316\u7565\u7b56\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a\n\n1. \u5408\u7406\u8bbe\u8ba1\u6570\u636e\u5e93\u7ed3\u6784\uff1a\u5305\u62ec\u9009\u62e9\u9002\u5408\u7684\u6570\u636e\u7c7b\u578b\u3001\u8bbe\u7f6e\u9002\u5f53\u7684\u7d22\u5f15\u3001\u89c4\u8303\u5316\u6570\u636e\u8868\u7b49\u3002\n\n2. \u4f18\u5316\u67e5\u8be2\u8bed\u53e5\uff1a\u4f7f\u7528\u6b63\u786e\u7684\u67e5\u8be2\u8bed\u53e5\uff0c\u514d\u89c1\u4f7f\u7528\u201cSELECT *\u201d\uff0c\u5c3d\u91cf\u514d\u89c1\u4f7f\u7528\u5b50\u67e5\u8be2\uff0c\u5408\u7406\u4f7f\u7528JOIN\u7b49\u3002\n\n3. \u4f18\u5316\u7d22\u5f15\uff1a\u6839\u636e\u67e5\u8be2\u9700\u6c42\u521b\u5efa\u9002\u5f53\u7684\u7d22\u5f15\uff0c\u514d\u89c1\u521b\u5efa\u8fc7\u591a\u6216\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15\uff0c\u5b9a\u671f\u7ef4\u62a4\u548c\u4f18\u5316\u7d22\u5f15\u3002\n\n4. \u4f18\u5316\u8868\u7ed3\u6784\uff1a\u514d\u89c1\u8fc7\u591a\u7684\u591a\u5c42\u57df\u5b57\u6bb5\uff0c\u5408\u7406\u8bbe\u8ba1\u8868\u7684\u5173\u7cfb\uff0c\u514d\u89c1\u8868\u7684\u8fde\u63a5\u8fc7\u591a\uff0c\u5408\u7406\u4f7f\u7528\u5206\u533a\u7b49\u3002\n\n5. \u4f18\u5316\u670d\u52a1\u5668\u914d\u7f6e\uff1a\u6839\u636e\u5b9e\u9645\u9700\u6c42\uff0c\u8c03\u6574MySQL\u7684\u914d\u7f6e\u53c2\u6570\uff0c\u5305\u62ec\u7f13\u51b2\u533a\u57df\u5927\u5c0f\u3001\u8fde\u63a5\u6570\u3001\u7ebf\u7a0b\u6570\u7b49\u3002\n\n6. \u4f18\u5316\u6570\u636e\u8bbf\u95ee\uff1a\u51cf\u5c11\u7f51\u7edc\u4f20\u8f93\u7684\u6570\u636e\u91cf\uff0c\u5982\u4f7f\u7528\u538b\u7f29\u4f20\u8f93\u3001\u4f7f\u7528\u9002\u5f53\u7684\u5b58\u50a8\u5f0f\u7b49\u3002\n\n7. \u4f7f\u7528\u7f13\u51b2\uff1a\u4f7f\u7528\u7f13\u51b2\u6280\u672f\uff08\u5982Memcached\u3001Redis\uff09\u7f13\u51b2\u70ed\u70b9\u6570\u636e\uff0c\u51cf\u5c11\u6570\u636e\u5e93\u7684\u8bbf\u95ee\u538b\u529b\u3002\n\n8. \u5b9a\u671f\u7ef4\u62a4\u6570\u636e\u5e93\uff1a\u5305\u62ec\u5b9a\u671f\u6e05\u7406\u65e0\u7528\u6570\u636e\u3001\u4f18\u5316\u8868\u7247\u7248\u3001\u5b9a\u671f\u5907\u4efd\u7b49\u3002\n\n9. \u4f7f\u7528\u5206\u5e03\u5f0f\u67b6\u6784\uff1a\u5bf9\u4e8e\u5927\u578b\u5e94\u7528\u6216\u9ad8\u51b2\u51fa\u573a\u666f\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u96c6\u7fa4\uff0c\u5c06\u8d1f\u8f7d\u5206\u6563\u5230\u591a\u4e2a\u8282\u70b9\u4e0a\u3002\n\n10. \u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177\uff1a\u4f7f\u7528MySQL\u63d0\u4f9b\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u5982EXPLAIN\u3001SHOW PROFILE\u7b49\uff0c\u5bf9\u67e5\u8be2\u8bed\u53e5\u548c\u6570\u636e\u5e93\u6027\u80fd\u8fdb\u884c\u5206\u6790\u548c\u4f18\u5316\u3002