{"id":1315,"date":"2011-12-31T06:35:15","date_gmt":"2011-12-30T21:35:15","guid":{"rendered":"https:\/\/wp-78qb7hnp.pistolfly.jp\/weblog\/2011\/12\/mysql-query-cache.html"},"modified":"2018-02-27T09:19:57","modified_gmt":"2018-02-27T00:19:57","slug":"mysql-query-cache","status":"publish","type":"post","link":"https:\/\/www.pistolfly.com\/weblog\/2011\/12\/mysql-query-cache.html","title":{"rendered":"MySQL\u306e\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5"},"content":{"rendered":"

\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u8a2d\u5b9a<\/h3>\n

my.cnf<\/p>\n

[mysqld]\r\nquery_cache_size=64M\r\nquery_cache_type=2\r\n<\/pre>\n
query_cache_type \u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3044\u305a\u308c\u304b\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002
\n0: (OFF) \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u884c\u308f\u306a\u3044\u3001\u307e\u305f\u306f \u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u305f\u7d50\u679c\u306e\u8aad\u307f\u51fa\u3057\u3092\u884c\u308f\u306a\u3044\u3002
\n1: (ON) SELECT SQL_NO_CACHE \u3067\u59cb\u307e\u308b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u4ee5\u5916\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3002
\n2: (DEMAND) SELECT SQL_CACHE \u3067\u59cb\u307e\u308b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3060\u3051\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3002<\/p>\n
\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u78ba\u8a8d<\/h3>\n
mysql> show status like 'Qcache%';\r\n+-------------------------+----------+\r\n| Variable_name           | Value    |\r\n+-------------------------+----------+\r\n| Qcache_free_blocks      | 1        | \r\n| Qcache_free_memory      | 66674696 | \r\n| Qcache_hits             | 8        | \r\n| Qcache_inserts          | 41       | \r\n| Qcache_lowmem_prunes    | 0        | \r\n| Qcache_not_cached       | 1145     | \r\n| Qcache_queries_in_cache | 41       | \r\n| Qcache_total_blocks     | 88       | \r\n+-------------------------+----------+\r\n8 rows in set (0.00 sec)\r\n<\/pre>\n
\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30c7\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8<\/h3>\n
mysql> FLUSH QUERY CACHE;\r\n<\/pre>\n
\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u30af\u30a8\u30ea\u7d50\u679c\u3092\u524a\u9664<\/h3>\n
mysql> RESET QUERY CACHE;\r\n<\/pre>\n
MySQL :: MySQL 5.1 \u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u30de\u30cb\u30e5\u30a2\u30eb :: 4.13 MySQL \u30af\u30a8\u30ea \u30ad\u30e3\u30c3\u30b7\u30e5<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u8a2d\u5b9a my.cnf [mysqld] query_cache_size=64M query_cache_type=2 query_cache_type \u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3044\u305a\u308c\u304b\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002 0: (OFF … \u7d9a\u304d\u3092\u8aad\u3080 MySQL\u306e\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_locale":"ja","_original_post":"1315","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[13],"tags":[],"class_list":["post-1315","post","type-post","status-publish","format-standard","hentry","category-mysql","ja"],"yoast_head":"\nMySQL\u306e\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5 - Pistolfly<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pistolfly.com\/weblog\/2011\/12\/mysql-query-cache.html\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MySQL\u306e\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5 - Pistolfly\" \/>\n<meta property=\"og:description\" content=\"\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u8a2d\u5b9a my.cnf [mysqld] query_cache_size=64M query_cache_type=2 query_cache_type \u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3044\u305a\u308c\u304b\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002 0: (OFF … \u7d9a\u304d\u3092\u8aad\u3080 MySQL\u306e\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5 →\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.pistolfly.com\/weblog\/2011\/12\/mysql-query-cache.html\" \/>\n<meta property=\"og:site_name\" content=\"Pistolfly\" \/>\n<meta property=\"article:published_time\" content=\"2011-12-30T21:35:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-02-27T00:19:57+00:00\" \/>\n<meta name=\"author\" content=\"Pistolfly\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"Pistolfly\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.pistolfly.com\\\/weblog\\\/2011\\\/12\\\/mysql-query-cache.html#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.pistolfly.com\\\/weblog\\\/2011\\\/12\\\/mysql-query-cache.html\"},\"author\":{\"name\":\"Pistolfly\",\"@id\":\"https:\\\/\\\/www.pistolfly.com\\\/weblog\\\/#\\\/schema\\\/person\\\/e779e918730b507907b3a35b77a9a2ab\"},\"headline\":\"MySQL\u306e\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\",\"datePublished\":\"2011-12-30T21:35:15+00:00\",\"dateModified\":\"2018-02-27T00:19:57+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.pistolfly.com\\\/weblog\\\/2011\\\/12\\\/mysql-query-cache.html\"},\"wordCount\":19,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.pistolfly.com\\\/weblog\\\/#\\\/schema\\\/person\\\/e779e918730b507907b3a35b77a9a2ab\"},\"articleSection\":[\"MySQL\"],\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.pistolfly.com\\\/weblog\\\/2011\\\/12\\\/mysql-query-cache.html#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.pistolfly.com\\\/weblog\\\/2011\\\/12\\\/mysql-query-cache.html\",\"url\":\"https:\\\/\\\/www.pistolfly.com\\\/weblog\\\/2011\\\/12\\\/mysql-query-cache.html\",\"name\":\"MySQL\u306e\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5 - 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