{"id":1797,"date":"2011-02-15T00:17:15","date_gmt":"2011-02-14T22:17:15","guid":{"rendered":"http:\/\/www.sabolc.com\/blog\/?p=1797"},"modified":"2011-02-15T00:17:15","modified_gmt":"2011-02-14T22:17:15","slug":"mysql-query-cache","status":"publish","type":"post","link":"https:\/\/sabolc.com\/blog\/mysql-query-cache\/","title":{"rendered":"MySQL query cache"},"content":{"rendered":"<p><tt><br \/>\nmysql&gt; show status like\u00a0 'qcache%';<br \/>\n+-------------------------+-----------+<br \/>\n| Variable_name\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | Value\u00a0\u00a0\u00a0\u00a0 |<br \/>\n+-------------------------+-----------+<br \/>\n| Qcache_free_blocks\u00a0\u00a0\u00a0\u00a0\u00a0 | 14415\u00a0\u00a0\u00a0\u00a0 |<br \/>\n| Qcache_free_memory\u00a0\u00a0\u00a0\u00a0\u00a0 | 57062128\u00a0 |<br \/>\n| Qcache_hits\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 447572972 |<br \/>\n| Qcache_inserts\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 36687625\u00a0 |<br \/>\n| Qcache_lowmem_prunes\u00a0\u00a0\u00a0 | 12135050\u00a0 |<br \/>\n| Qcache_not_cached\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 4278468\u00a0\u00a0 |<br \/>\n| Qcache_queries_in_cache | 38860\u00a0\u00a0\u00a0\u00a0 |<br \/>\n| Qcache_total_blocks\u00a0\u00a0\u00a0\u00a0 | 94088\u00a0\u00a0\u00a0\u00a0 |<br \/>\n+-------------------------+-----------+<br \/>\n8 rows in set (0.00 sec)<\/tt><\/p>\n<p>Ebb\u0151l legink\u00e1bb a Qcache_hits a leg\u00e9rdekesebb: 447 milli\u00f3 tal\u00e1lat az elm\u00falt 169 napban (akkor indult utolj\u00e1ra \u00fajra a szerver), \u00e9s ezzel egy\u00fctt m\u00e9g van 57 MB szabad hely a query cache-ben (pedig mostanra gyakorlatilag a szerver \u00f6sszes adatb\u00e1zis\u00e1nak az \u00f6sszes szok\u00e1sos lek\u00e9rdez\u00e9se a gyors\u00edt\u00f3t\u00e1rb\u00f3l j\u00f6n).<\/p>\n<p>Ezek a sz\u00e1mok persze nemcsak a blog\u00e9, de a fene gondolta, hogy ilyen hasznos lesz&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>mysql&gt; show status like\u00a0 &#8216;qcache%&#8217;; +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8211;+ | Variable_name\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | Value\u00a0\u00a0\u00a0\u00a0 | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8211;+ | Qcache_free_blocks\u00a0\u00a0\u00a0\u00a0\u00a0 | 14415\u00a0\u00a0\u00a0\u00a0 | | Qcache_free_memory\u00a0\u00a0\u00a0\u00a0\u00a0 | 57062128\u00a0 | | Qcache_hits\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 447572972 | | Qcache_inserts\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1797","post","type-post","status-publish","format-standard","hentry","category-daily-life"],"_links":{"self":[{"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/posts\/1797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/comments?post=1797"}],"version-history":[{"count":0,"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/posts\/1797\/revisions"}],"wp:attachment":[{"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/media?parent=1797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/categories?post=1797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sabolc.com\/blog\/wp-json\/wp\/v2\/tags?post=1797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}