もにかじ2 lt @studio3104
TRANSCRIPT
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監視の勉強会ですが、
ちょっとMySQLの話をしますね
@studio3104
Lightning Talk at Monitoring Casual #2
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自己紹介
@studio3104 (Satoshi SUZUKI)
-- Perl歴半年くらい
-- WEB業界2年目
-- 妻、娘、息子います
-- ソシャゲ、公式サイト、パチ(スロ)ンコ
-- こんなのやってます →→→→→→→
-- Perlと心中するらしいです
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スロークエリ
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とりあえず
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EXPLAIN
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riywoさん!
マジriywoさん!
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僕も作ってみた
「out-exec-mysql-
slowquery」
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1 #!/usr/bin/env perl$ 2 $ 3 use strict;$ 4 use warnings;$ 5 use Data::Dumper;$ 6 use DBIx::Handler;$ 7 use JSON::XS;$ 8 use Data::MessagePack;$ 9 $ 10 $| = 1;$ 11 $ 12 my $mp = Data::MessagePack->new();$ 13 $ 14 my $db_user = "root";$ 15 my $db_passwd = "";$ 16 my $db_opt = { RaiseError => 0, PrintError => 1 };$ 17 my $handler = DBIx::Handler->new( "DBI:mysql:database=information_schema:1 27.0.0.1", $db_user, $db_passwd, $db_opt );$ 18 $ 19 my $db;$ 20 my $long_query_time = $handler->dbh->selectrow_array($ 21 "SELECT VARIABLE_VALUE FROM GLOBAL_VARIABLES WHERE VARIABLE_NAME = 'LONG_Q UERY_TIME'");$ 22 $handler->dbh->do("SELECT SLEEP($long_query_time)");$ 23 $ 24 while ( my $json = <STDIN> ) {$ 25 my $slowlog = eval { decode_json($json); };$ 26 next if ($@);$
MySQL slow_log
MongoDB
27 $ 28 unless ( defined $slowlog->{sql} ) {$ 29 print $mp->pack($slowlog);$ 30 next;$ 31 }$ 32 $ 33 my $select_statement;$ 34 if ( $slowlog->{sql} =~ /(select[^\;]+)/i ) {$ 35 $select_statement = $1;$ 36 }$ 37 $ 38 if ( $slowlog->{sql} =~ /^use ([^\;]+)/i ) {$ 39 $db = '`' . $1 . '`';$ 40 }$ 41 $ 42 if ( defined $db && defined $select_statement ) {$ 43 $handler->dbh->do("use $db");$ 44 my $explains = eval { $handler->dbh->selectall_arrayref( "EXPLAIN $selec t_statement", +{ Slice => {} } ); };$ 45 if ( ref $explains eq 'ARRAY' ) {$ 46 $slowlog->{explain} = $explains;$ 47 $slowlog->{database} = $db;$ 48 }$ 49 }$ 50 $ 51 print $mp->pack($slowlog);$ 52 }$
tail
EXPLAIN
store
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DEMO
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Openess is our driver for excellence
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公開したよ!https://github.com/studio3104/out-exec-mysql-slowquery
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スーパー宣伝タイム
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監視の勉強会ですが、
ちょっとMySQLの話をしますね
ご清聴ありがとうございました
@studio3104
Lightning Talk at Monitoring Casual #2