はてなブックマーク

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sudo amazon-linux-extras install php8.2 sudo amazon-linux-extras install mariadb10.5 sudo amazon-linux-extras install memcached1.5 sudo yum groupinstall "Development Tools" sudo yum install httpd php php-gd php-mbstring php-xml git php-devel php-pear zlib-devel libmemcached.x86_64 libmemcached-devel.x86_64 ImageMagick.x86_64 ImageMagick-devel.x86_64 libzip-devel.x86_64 sudo pecl install igbinary s

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MySQLのチューニングに欠かすことができない slow_log と explain ですが、 膨大な slow_log の中から怪しそうなクエリを探しだして explainをかける というのは結構手間がかかりめんどくさいものです。 myslowexplainは、slow_logに記録されたクエリに対してexplainを実行し、 結果を表示するpythonスクリプトです。 結果はこんな感じで表示されます。 =================================================== last: 2012-07-30 18:03:23 # 最後に発行された時刻 qtime: 0:00:00 # 実行にかかった最大時間 count: 3 # slow_logに出現した回数 query: SELECT COUNT(*) FROM `guild_message_board

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