{"id":1863,"date":"2010-09-17T10:09:50","date_gmt":"2010-09-17T10:09:50","guid":{"rendered":"http:\/\/www.icocean.com\/blog\/?p=1863"},"modified":"1970-01-01T07:00:00","modified_gmt":"1970-01-01T07:00:00","slug":"apachemysql%E7%9A%84%E4%BC%98%E5%8C%96","status":"publish","type":"post","link":"https:\/\/www.icocean.com\/blog\/?p=1863","title":{"rendered":"Apache Mysql \u7684\u4f18\u5316"},"content":{"rendered":"

\u641e\u4e86\u4e24\u5929,\u7efc\u5408\u7f51\u4e0a\u4f18\u79c0BLOG\u5e76\u4e14\u8054\u7cfb\u5b9e\u9645\u6574\u7406\u4e86\u4e0b Apache Mysql \u7684\u4f18\u5316,\u867d\u7136\u4e0d\u4e00\u5b9a\u9002\u5408\u6bcf\u4e00\u4e2a\u4eba,\u4f46\u91cc\u9762\u7684\u4e00\u4e9b\u53c2\u6570\u81ea\u5df1\u53ef\u4ee5\u81ea\u5df1\u7422\u78e8\u6d4b\u8bd5.\u4e0d\u8fc7Apache\u611f\u89c9\u4e0d\u600e\u4e48\u6837,\u7237\u7237\u7684 15\u5206\u949f\u5728\u7ebf 2000\u591aIP\u5c31\u5361\u5f97\u4e0d\u5f97\u4e86,\u6bcf\u592990\u591aW PV \u90fd\u5361,\u770b\u4e86\u4e0b163\u4ed6\u4eec\u7684\u7f51\u7edc\u67b6\u6784,\u4e0d\u7ba1\u662f\u524d\u7aef\u8fd8\u662f\u6e90\u6bb5\u670d\u52a1\u5668\u90fd\u5168\u662fNGINX,\u770b\u6837\u5b50\u4ee5\u540e\u8fd8\u5f97\u7ee7\u7eed\u52aa\u529b\u5b66\u4e60\u4e86,<\/p>\n

Apache\u4f18\u5316<\/p>\n

KeepAlive On<\/p>\n

KeepAliveTimeout 10<\/p>\n


    StartServers          5
    MinSpareServers       10
    MaxSpareServers      20
    ServerLimit          1000
    MaxClients          1000
    MaxRequestsPerChild   10000
<\/IfModule><\/p>\n

\u4e3b\u8981\u4f18\u5316\u8fd9\u51e0\u4e2a\u53c2\u6570,\u5728\u670d\u52a1\u5668\u5b8c\u5168\u53ef\u4ee5\u627f\u53d7\u8bbf\u95ee\u91cf\u7684\u65f6\u5019\u5efa\u8bae\u628aKeepAlive\u8bbe\u7f6e\u4e3a on,\u4f46\u7f51\u4e0a\u5f88\u591a\u4eba\u8bbe\u7f6e\u4e86on\u4f46\u662fKeepAliveTime\u8bbe\u7f6e\u4e3a 3-5\u79d2,\u6211\u8ba4\u4e3a\u8fd9\u6837\u8bbe\u7f6e\u6839\u672c\u5c31\u6ca1\u6709\u6548\u679c,\u8fd8\u4e0d\u5982KeepAlive\u8bbe\u7f6e\u4e3aoff,\u6253\u5f00\u4e00\u4e2a\u7f51\u9875\u7b97\u5feb\u4e5f\u89812\u79d2,\u4eba\u5bb6\u4e0d\u53ef\u80fd\u770b3\u79d2\u53c8\u53bb\u6253\u5f00\u65b0\u9875\u9762,\u6240\u4ee5\u8fd9\u6837\u8bbe\u7f6e\u4e2a\u4eba\u89c9\u5f97\u4e0d\u79d1\u5b66,\u81f3\u5c11\u4e5f\u898110\u79d2,\u5efa\u8bae\u4f7f\u7528\u9ed8\u8ba4\u768415\u79d2,\u5982\u679c\u670d\u52a1\u5668\u538b\u529b\u592a\u5927\u53ef\u4ee5\u5c1d\u8bd5KeepAlive\u8bbe\u7f6eoff,\u4ee5\u51cf\u5c11\u4e00\u4e9b\u65e0\u6548\u8fde\u63a5,<\/p>\n

\u5e76\u53d1\u8ba1\u7b97\u53c2\u8003\u516c\u5f0f\uff1a
\u5e76\u53d1 = connection established \/ min(server keepalive, server timeout)
\u7ffb\u8bd1\u4e00\u4e0b\uff1a
\u5e76\u53d1 = \u670d\u52a1\u5668\u4f20\u8f93\u94fe\u63a5\u6570 \u9664\u4ee5 \u670d\u52a1\u5668\u8f6f\u4ef6\u7684keepalive\u8bbe\u7f6e\u548c\u670d\u52a1\u5668\u8f6f\u4ef6\u7684\u8d85\u65f6\u8bbe\u7f6e\u4e4b\u95f4\u7684\u6700\u5c0f\u503c<\/p>\n

KeepAlive\u8bbe\u7f6eoff\u53ef\u4ee5\u5927\u5927\u51cf\u5c0f\u77ac\u95f4established\u503c,\u8fd9\u6837\u5c31\u53ef\u4ee5\u51cf\u5c11\u5e76\u53d1,\u5229\u4e8e\u670d\u52a1\u5668\u7684\u8d1f\u8f7d.\u7ecf\u8fc7\u6d4b\u8bd5 www.apache.org \u662f\u628aKeepAlive\u8bbe\u7f6eoff\u4e86,\u4f46QQ 163 sina\u662f\u5f00\u542f\u7684,\u5475\u5475\u4ed6\u4eec\u524d\u7aef\u90fd\u662f\u7528\u7684NGINX,\u53ef\u4ee5\u4e0d\u7528\u62c5\u5fc3\u5e76\u53d1\u6570\u95ee\u9898,\u4ee5\u540e\u8fd8\u662f\u9009\u62e9NGINX\u597d,\u7ee7\u7eed\u5b66\u4e60 ….<\/p>\n

\u4e0b\u9762\u662f\u7f51\u4e0a\u7684\u4f18\u5316\u8bf4\u660e,\u8054\u7cfb\u5b9e\u9645\u548c\u4e2d\u548c\u5f88\u591a\u535a\u5ba2,\u611f\u89c9\u63cf\u8ff0\u5f97\u5f88\u597d, MaxRequestsPerChild \u8fd9\u4e2a\u503c\u5982\u679c\u5185\u5b58\u5c0f,\u4e5f\u8bbe\u7f6e\u5c0f\u70b9.<\/p>\n

1\u3001KeepAlive On\/Off
\u3000\u3000KeepAlive\u6307\u7684\u662f\u4fdd\u6301\u8fde\u63a5\u6d3b\u8dc3\uff0c\u7c7b\u4f3c\u4e8eMysql\u7684\u6c38\u4e45\u8fde\u63a5\u3002\u6362\u4e00\u53e5\u8bdd\u8bf4\uff0c\u5982\u679c\u5c06KeepAlive\u8bbe\u7f6e\u4e3aOn\uff0c\u90a3\u4e48\u6765\u81ea\u540c\u4e00\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u5c31\u4e0d\u9700\u8981\u518d\u4e00\u6b21\u8fde\u63a5\uff0c\u907f\u514d\u6bcf\u6b21\u8bf7\u6c42\u90fd\u8981\u65b0\u5efa\u4e00\u4e2a\u8fde\u63a5\u800c\u52a0\u91cd\u670d\u52a1\u5668\u7684\u8d1f\u62c5\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u56fe\u7247\u8f83\u591a\u7684\u7f51\u7ad9\u5e94\u8be5\u628aKeepAlive\u8bbe\u4e3aOn\u3002<\/p>\n

2\u3001KeepAliveTimeOut number
\u3000\u3000\u5982\u679c\u7b2c\u4e8c\u6b21\u8bf7\u6c42\u548c\u7b2c\u4e00\u6b21\u8bf7\u6c42\u4e4b\u95f4\u8d85\u8fc7KeepAliveTimeOut\u7684\u65f6\u95f4\u7684\u8bdd\uff0c\u7b2c\u4e00\u6b21\u8fde\u63a5\u5c31\u4f1a\u4e2d\u65ad\uff0c\u518d\u65b0\u5efa\u7b2c\u4e8c\u4e2a\u8fde\u63a5\u3002\u5b83\u7684\u8bbe\u7f6e\u4e00\u822c\u8003\u8651\u56fe\u7247\u6216\u8005JS\u7b49\u6587\u4ef6\u4e24\u6b21\u8bf7\u6c42\u95f4\u9694.<\/p>\n

3\u3001MaxKeepAliveRequests 100
\u3000\u3000\u4e00\u6b21\u8fde\u63a5\u53ef\u4ee5\u8fdb\u884c\u7684HTTP\u8bf7\u6c42\u7684\u6700\u5927\u8bf7\u6c42\u6b21\u6570\u3002\u5c06\u5176\u503c\u8bbe\u4e3a0\u5c06\u652f\u6301\u5728\u4e00\u6b21\u8fde\u63a5\u5185\u8fdb\u884c\u65e0\u9650\u6b21\u7684\u4f20\u8f93\u8bf7\u6c42\u3002\u4e8b\u5b9e\u4e0a\u6ca1\u6709\u5ba2\u6237\u7a0b\u5e8f\u5728\u4e00\u6b21\u8fde\u63a5\u4e2d\u8bf7\u6c42\u592a\u591a\u7684\u9875\u9762\uff0c\u901a\u5e38\u8fbe\u4e0d\u5230\u8fd9\u4e2a\u4e0a\u9650\u5c31\u5b8c\u6210\u8fde\u63a5\u4e86\u3002<\/p>\n

4\u3001StartServers        10
\u3000\u3000\u8bbe\u7f6e\u670d\u52a1\u5668\u542f\u52a8\u65f6\u5efa\u7acb\u7684\u5b50\u8fdb\u7a0b\u6570\u91cf\u3002\u56e0\u4e3a\u5b50\u8fdb\u7a0b\u6570\u91cf\u52a8\u6001\u7684\u53d6\u51b3\u4e8e\u8d1f\u8f7d\u7684\u8f7b\u91cd,\u6240\u6709\u4e00\u822c\u6ca1\u6709\u5fc5\u8981\u8c03\u6574\u8fd9\u4e2a\u53c2\u6570\u3002<\/p>\n

5\u3001MinSpareServers     10
\u3000\u3000\u8bbe\u7f6e\u7a7a\u95f2\u5b50\u8fdb\u7a0b\u7684\u6700\u5c0f\u6570\u91cf\u3002\u6240\u8c13\u7a7a\u95f2\u5b50\u8fdb\u7a0b\u662f\u6307\u6ca1\u6709\u6b63\u5728\u5904\u7406\u8bf7\u6c42\u7684\u5b50\u8fdb\u7a0b\u3002\u5982\u679c\u5f53\u524d\u7a7a\u95f2\u5b50\u8fdb\u7a0b\u6570\u5c11\u4e8eMinSpareServers ,\u90a3\u4e48Apache\u5c06\u4ee5\u6700\u5927\u6bcf\u79d2\u4e00\u4e2a\u7684\u901f\u5ea6\u4ea7\u751f\u65b0\u7684\u5b50\u8fdb\u7a0b\u3002\u53ea\u6709\u5728\u975e\u5e38\u7e41\u5fd9\u673a\u5668\u4e0a\u624d\u9700\u8981\u8c03\u6574\u8fd9\u4e2a\u53c2\u6570\u3002\u5c06\u6b64\u53c2\u6570\u8bbe\u7684\u592a\u5927\u901a\u5e38\u662f\u4e00\u4e2a\u574f\u4e3b\u610f\u3002<\/p>\n

6\u3001MaxSpareThreads     75
\u3000\u3000\u8bbe\u7f6e\u7a7a\u95f2\u5b50\u8fdb\u7a0b\u7684\u6700\u5927\u6570\u91cf\u3002\u5982\u679c\u5f53\u524d\u6709\u8d85\u8fc7MaxSpareServers\u6570\u91cf\u7684\u7a7a\u95f2\u5b50\u8fdb\u7a0b,\u90a3\u4e48\u7236\u8fdb\u7a0b\u5c06\u6740\u6b7b\u591a\u4f59\u7684\u5b50\u8fdb\u7a0b\u3002\u53ea\u6709\u5728\u975e\u5e38\u7e41\u5fd9\u673a\u5668\u4e0a\u624d\u9700\u8981\u8c03\u6574\u8fd9\u4e2a\u53c2\u6570\u3002\u5c06\u6b64\u53c2\u6570\u8bbe\u7684\u592a\u5927\u901a\u5e38\u662f\u4e00\u4e2a\u574f\u4e3b\u610f\u3002\u5982\u679c\u4f60\u5c06\u8be5\u6307\u4ee4\u7684\u503c\u8bbe\u7f6e\u4e3a\u6bd4MinSpareServers\u5c0f,Apache\u5c06\u4f1a\u81ea\u52a8\u5c06\u5176\u4fee\u6539\u6210 \u201dMinSpareServers+1\u2033\u3002<\/p>\n

7\u3001ServerLimit       2000
\u3000\u3000\u670d\u52a1\u5668\u5141\u8bb8\u914d\u7f6e\u7684\u8fdb\u7a0b\u6570\u4e0a\u9650\u3002\u53ea\u6709\u5728\u4f60\u9700\u8981\u5c06MaxClients\u8bbe\u7f6e\u6210\u9ad8\u4e8e\u9ed8\u8ba4\u503c256\u7684\u65f6\u5019\u624d\u9700\u8981\u4f7f\u7528\u3002\u8981\u5c06\u6b64\u6307\u4ee4\u7684\u503c\u4fdd\u6301\u548c MaxClients\u4e00\u6837\u3002\u4fee\u6539\u6b64\u6307\u4ee4\u7684\u503c\u5fc5\u987b\u5b8c\u5168\u505c\u6b62\u670d\u52a1\u540e\u518d\u542f\u52a8\u624d\u80fd\u751f\u6548\uff0c\u4ee5restart\u65b9\u5f0f\u91cd\u542f\u52a8\u5c06\u4e0d\u4f1a\u751f\u6548\u3002<\/p>\n

8\u3001MaxClients        256
\u3000\u3000\u7528\u4e8e\u4f3a\u670d\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u6700\u5927\u8bf7\u6c42\u6570\u91cf\uff08\u6700\u5927\u5b50\u8fdb\u7a0b\u6570\uff09\uff0c\u4efb\u4f55\u8d85\u8fc7MaxClients\u9650\u5236\u7684\u8bf7\u6c42\u90fd\u5c06\u8fdb\u5165\u7b49\u5019\u961f\u5217\u3002\u9ed8\u8ba4\u503c\u662f256\uff0c\u5982\u679c\u8981\u63d0\u9ad8\u8fd9\u4e2a\u503c\u5fc5\u987b\u540c\u65f6\u63d0\u9ad8ServerLimit\u7684\u503c\u3002\u7b14\u8005\u5efa\u8bae\u5c06\u521d\u59cb\u503c\u8bbe\u4e3a(\u4ee5Mb\u4e3a\u5355\u4f4d\u7684\u6700\u5927\u7269\u7406\u5185\u5b58\/2),\u7136\u540e\u6839\u636e\u8d1f\u8f7d\u60c5\u51b5\u8fdb\u884c\u52a8\u6001\u8c03\u6574\u3002\u6bd4\u5982\u4e00\u53f04G\u5185\u5b58\u7684\u673a\u5668\uff0c\u90a3\u4e48\u521d\u59cb\u503c\u5c31\u662f4000\/2=2000\u3002<\/p>\n

9\u3001MaxRequestsPerChild 0
\u3000\u3000apache.exe\u8fdb\u7a0b\u5305\u62ec\u4e00\u4e2a\u662f\u7236\u8fdb\u7a0b\u3001\u4e00\u4e2a\u662f\u5b50\u8fdb\u7a0b\uff0c\u7236\u8fdb\u7a0b\u63a5\u5230\u8bbf\u95ee\u8bf7\u6c42\u540e\uff0c\u5c06\u8bf7\u6c42\u4ea4\u7531\u5b50\u8fdb\u7a0b\u5904\u7406\u3002MaxRequestsPerChild\u8fd9\u4e2a\u6307\u4ee4\u8bbe\u5b9a\u4e00\u4e2a\u72ec\u7acb\u7684\u5b50\u8fdb\u7a0b\u5c06\u80fd\u5904\u7406\u7684\u8bf7\u6c42\u6570\u91cf\u3002\u5728\u5904\u7406\u201cMaxRequestsPerChild \u6570\u5b57\u201d\u4e2a\u8bf7\u6c42\u4e4b\u540e\uff0c\u5b50\u8fdb\u7a0b\u5c06\u4f1a\u88ab\u7236\u8fdb\u7a0b\u7ec8\u6b62\uff0c\u8fd9\u65f6\u5019\u5b50\u8fdb\u7a0b\u5360\u7528\u7684\u5185\u5b58\u5c31\u4f1a\u91ca\u653e\uff0c\u5982\u679c\u518d\u6709\u8bbf\u95ee\u8bf7\u6c42\uff0c\u7236\u8fdb\u7a0b\u4f1a\u91cd\u65b0\u4ea7\u751f\u5b50\u8fdb\u7a0b\u8fdb\u884c\u5904\u7406\u3002\u3000\u3000\u5982\u679c MaxRequestsPerChild\u7f3a\u7701\u8bbe\u4e3a0(\u65e0\u9650)\u6216\u8f83\u5927\u7684\u6570\u5b57(\u4f8b\u598210000\u4ee5\u4e0a)\u53ef\u4ee5\u4f7f\u6bcf\u4e2a\u5b50\u8fdb\u7a0b\u5904\u7406\u66f4\u591a\u7684\u8bf7\u6c42\uff0c\u4e0d\u4f1a\u56e0\u4e3a\u4e0d\u65ad\u7ec8\u6b62\u3001\u542f\u52a8\u5b50\u8fdb\u7a0b\u964d\u4f4e\u8bbf\u95ee\u6548\u7387\uff0c\u4f46MaxRequestsPerChild\u8bbe\u7f6e\u4e3a0\u65f6\uff0c\u5982\u679c\u5360\u7528\u4e86200\uff5e300M\u5185\u5b58\uff0c\u5373\u4f7f\u8d1f\u8f7d\u4e0b\u6765\u65f6\u5360\u7528\u7684\u5185\u5b58\u4e5f\u4e0d\u4f1a\u51cf\u5c11\u3002\u5185\u5b58\u8f83\u5927\u7684\u670d\u52a1\u5668\u53ef\u4ee5\u8bbe\u7f6e\u4e3a0\u6216\u8f83\u5927\u7684\u6570\u5b57\u3002\u5185\u5b58\u8f83\u5c0f\u7684\u670d\u52a1\u5668\u4e0d\u59a8\u8bbe\u7f6e\u621030\u300150\u3001100\uff0c\u4ee5\u9632\u5185\u5b58\u6ea2\u51fa\u3002\u6240\u4ee5\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u4f60\u53d1\u73b0\u670d\u52a1\u5668\u7684\u5185\u5b58\u76f4\u7ebf\u4e0a\u5347\uff0c\u5efa\u8bae\u4fee\u6539\u8be5\u53c2\u6570\u8bd5\u8bd5\u3002\u6ce8\u610f\uff0c\u5982\u679c\u5b50\u8fdb\u7a0b\u6709\u5185\u5b58\u6cc4\u6f0f\u95ee\u9898\uff0c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3a\u975e0\u503c\u53ef\u4ee5\u56de\u6536\u5b50\u8fdb\u7a0b\u9020\u6210\u7684\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n

Mysql \u7684\u4f18\u5316<\/p>\n

\u7efc\u5408\u5f88\u591a\u4f18\u79c0BLOG,\u9002\u54082-4G\u5185\u5b58\u670d\u52a1\u5668,\u5177\u4f53\u7684\u8fd8\u9700\u8981\u81ea\u5df1\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8c03\u6574.\u4e0d\u662f\u8bf4\u4e00\u4e2a\u914d\u7f6e\u5c31\u53ef\u4ee5\u9002\u5408\u6240\u6709\u670d\u52a1\u5668.<\/p>\n

key_buffer = 256M
sort_buffer_size = 2M
read_buffer_size = 2M
myisam_sort_buffer_size = 64M
max_heap_table_size = 256M
max_allowed_packet = 16M
table_cache = 512
thread_cache = 64
thread_concurrency = 8
back_log = 200
max_connections=500
wait_timeout=30
read_rnd_buffer_size = 8M
long_query_time = 1
query_cache_size = 32M<\/p>\n

key_buffer\u8c03\u6574<\/p>\n

show global status like 'key_read%';
mysql> show global status like 'key_read%';
+——————-+———+
| Variable_name     | Value   |
+——————-+———+
| Key_read_requests | 2055939 |
| Key_reads         | 2465    |
+——————-+———+
2 rows in set (0.00 sec)<\/p>\n

Key_read_requests\/Key_reads \u5c0f\u4e8e 1:10000<\/p>\n

show global status like 'max_used_connections';
mysql> show global status like 'max_used_connections';
+———————-+——-+
| Variable_name        | Value |
+———————-+——-+
| Max_used_connections | 4     |
+———————-+——-+
1 row in set (0.00 sec)<\/p>\n

key_buffer=128M\uff1a\u5168\u90e8\u8868\u7684\u7d22\u5f15\u90fd\u4f1a\u5c3d\u53ef\u80fd\u653e\u5728\u8fd9\u5757\u5185\u5b58\u533a\u57df\u5185\uff0c\u7d22\u5f15\u6bd4\u8f83\u5927\u7684\u8bdd\u5c31\u5f00\u7a0d\u5927\u70b9\u90fd\u53ef\u4ee5\uff0c\u6211\u4e00\u822c\u8bbe\u4e3a128M\uff0c\u6709\u4e2a\u597d\u7684\u5efa\u8bae\u662f\u628a\u5f88\u5c11\u7528\u5230\u5e76\u4e14\u6bd4\u8f83\u5927\u7684\u8868\u60f3\u529e\u6cd5\u79fb\u5230\u522b\u7684\u5730\u65b9\u53bb\uff0c\u8fd9\u6837\u53ef\u4ee5\u663e\u8457\u51cf\u5c11mysql\u7684\u5185\u5b58\u5360\u7528\u3002
sort_buffer_size=1M\uff1a\u5355\u4e2a\u7ebf\u7a0b\u4f7f\u7528\u7684\u7528\u4e8e\u6392\u5e8f\u7684\u5185\u5b58\uff0c\u67e5\u8be2\u7ed3\u679c\u96c6\u90fd\u4f1a\u653e\u8fdb\u8fd9\u5185\u5b58\u91cc\uff0c\u5982\u679c\u6bd4\u8f83\u5c0f\uff0cmysql\u4f1a\u591a\u653e\u51e0\u6b21\uff0c\u6240\u4ee5\u7a0d\u5fae\u5f00\u5927\u4e00\u70b9\u5c31\u53ef\u4ee5\u4e86\uff0c\u91cd\u8981\u662f\u4f18\u5316\u597d\u7d22\u5f15\u548c\u67e5\u8be2\u8bed\u53e5\uff0c\u8ba9\u4ed6\u4eec\u4e0d\u8981\u751f\u6210\u592a\u5927\u7684\u7ed3\u679c\u96c6\u3002<\/p>\n

\u53e6\u5916\u4e00\u4e9b\u914d\u7f6e\uff1a
thread_concurrency=8\uff1a\u8fd9\u4e2a\u914d\u7f6e\u6807\u914d=cpu\u6570\u91cfx2
interactive_timeout=30
wait_timeout=30\uff1a\u8fd9\u4e24\u4e2a\u914d\u7f6e\u4f7f\u752810-30\u79d2\u5c31\u53ef\u4ee5\u4e86\uff0c\u8fd9\u6837\u4f1a\u5c3d\u5feb\u5730\u91ca\u653e\u5185\u5b58\u8d44\u6e90\uff0c\u6ce8\u610f\uff1a\u4e00\u76f4\u5728\u4f7f\u7528\u7684\u8fde\u63a5\u662f\u4e0d\u4f1a\u65ad\u6389\u7684\uff0c\u8fd9\u4e2a\u914d\u7f6e\u53ea\u662f\u65ad\u6389\u4e86\u957f\u65f6\u95f4\u4e0d\u52a8\u7684\u8fde\u63a5\u3002
query_cache\uff1a\u8fd9\u4e2a\u529f\u80fd\u4e0d\u8981\u4f7f\u7528\uff0c\u73b0\u5728\u5f88\u591a\u4eba\u770b\u5230cache\u8fd9\u51e0\u4e2a\u5b57\u6bcd\u5c31\u50cf\u770b\u5230\u4e86\u5b9d\u8d1d\uff0c\u8fd9\u662f\u4e0d\u552f\u7269\u4e3b\u4e49\u7684\u3002mysql\u7684query_cache \u5728\u6bcf\u6b21\u8868\u6570\u636e\u6709\u53d8\u5316\u7684\u65f6\u5019\u90fd\u4f1a\u91cd\u65b0\u6e05\u7406\u8fde\u81f3\u8be5\u8868\u7684\u6240\u6709\u7f13\u5b58\uff0c\u5982\u679c\u66f4\u65b0\u6bd4\u8f83\u9891\u7e41\uff0cquery_cache\u4e0d\u4f46\u5e2e\u4e0d\u4e0a\u5fd9\uff0c\u800c\u4e14\u8fd8\u4f1a\u5bf9\u6548\u7387\u5f71\u54cd\u5f88\u5927\u3002\u8fd9\u4e2a\u53c2\u6570\u53ea\u9002\u5408\u53ea\u8bfb\u578b\u7684\u6570\u636e\u5e93\uff0c\u5982\u679c\u975e\u8981\u7528\uff0c\u4e5f\u53ea\u80fd\u7528query_cache_type=2\u81ea\u884c\u7528SQL_CACHE\u6307\u5b9a\u4e00\u4e9bsql\u8fdb\u884c\u7f13\u5b58\u3002
max_connections\uff1a\u9ed8\u8ba4\u4e3a100\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u662f\u8db3\u591f\u7528\u7684\uff0c\u4f46\u662f\u4e00\u822c\u8981\u5f00\u5927\u4e00\u70b9\uff0c\u5f00\u5230400-600\u5c31\u53ef\u4ee5\u4e86\uff0c\u80fd\u8d85\u8fc7600\u7684\u8bdd\u4e00\u822c\u5c31\u6709\u6548\u7387\u95ee\u9898\uff0c\u5f97\u53e6\u627e\u5bf9\u7b56\uff0c\u5149\u9760\u589e\u52a0\u8fd9\u4e2a\u6570\u5b57\u4e0d\u662f\u529e\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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