diff --git a/database/mysql/mode/innodbbufferpoolhitrate.pm b/database/mysql/mode/innodbbufferpoolhitrate.pm
index 62cfd9d2d..57dd9550c 100644
--- a/database/mysql/mode/innodbbufferpoolhitrate.pm
+++ b/database/mysql/mode/innodbbufferpoolhitrate.pm
@@ -108,8 +108,7 @@ sub run {
     if (defined($old_read_request) && defined($old_read) &&
         $new_datas->{Innodb_buffer_pool_read_requests} >= $old_read_request &&
         $new_datas->{Innodb_buffer_pool_reads} >= $old_read) {
-        
-        
+             
         my %prcts = ();
         my $total_read_requests = $new_datas->{Innodb_buffer_pool_read_requests} - $old_read_request;
         my $total_read_disk = $new_datas->{Innodb_buffer_pool_reads} - $old_read;
diff --git a/database/mysql/mode/openfiles.pm b/database/mysql/mode/openfiles.pm
index f13cc88ce..089b8b7ab 100644
--- a/database/mysql/mode/openfiles.pm
+++ b/database/mysql/mode/openfiles.pm
@@ -85,7 +85,7 @@ sub run {
     $self->{sql}->query(query => q{SHOW VARIABLES LIKE 'open_files_limit'});
     my ($dummy, $open_files_limit) = $self->{sql}->fetchrow_array();
     if (!defined($open_files_limit)) {
-        $self->{output}->add_option_msg(short_msg => "Cannot get ope files limit.");
+        $self->{output}->add_option_msg(short_msg => "Cannot get open files limit.");
         $self->{output}->option_exit();
     }
     $self->{sql}->query(query => q{SHOW /*!50000 global */ STATUS LIKE 'Open_files'});
diff --git a/database/mysql/mode/qcachehitrate.pm b/database/mysql/mode/qcachehitrate.pm
new file mode 100644
index 000000000..e37d427c3
--- /dev/null
+++ b/database/mysql/mode/qcachehitrate.pm
@@ -0,0 +1,183 @@
+################################################################################
+# Copyright 2005-2013 MERETHIS
+# Centreon is developped by : Julien Mathis and Romain Le Merlus under
+# GPL Licence 2.0.
+# 
+# This program is free software; you can redistribute it and/or modify it under 
+# the terms of the GNU General Public License as published by the Free Software 
+# Foundation ; either version 2 of the License.
+# 
+# This program is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 
+# PARTICULAR PURPOSE. See the GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along with 
+# this program; if not, see <http://www.gnu.org/licenses>.
+# 
+# Linking this program statically or dynamically with other modules is making a 
+# combined work based on this program. Thus, the terms and conditions of the GNU 
+# General Public License cover the whole combination.
+# 
+# As a special exception, the copyright holders of this program give MERETHIS 
+# permission to link this program with independent modules to produce an executable, 
+# regardless of the license terms of these independent modules, and to copy and 
+# distribute the resulting executable under terms of MERETHIS choice, provided that 
+# MERETHIS also meet, for each linked independent module, the terms  and conditions 
+# of the license of that module. An independent module is a module which is not 
+# derived from this program. If you modify this program, you may extend this 
+# exception to your version of the program, but you are not obliged to do so. If you
+# do not wish to do so, delete this exception statement from your version.
+# 
+# For more information : contact@centreon.com
+# Authors : Quentin Garnier <qgarnier@merethis.com>
+#
+####################################################################################
+
+package database::mysql::mode::qcachehitrate;
+
+use base qw(centreon::plugins::mode);
+
+use strict;
+use warnings;
+use centreon::plugins::statefile;
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+    
+    $self->{version} = '1.0';
+    $options{options}->add_options(arguments =>
+                                { 
+                                  "warning:s"               => { name => 'warning', },
+                                  "critical:s"              => { name => 'critical', },
+                                  "lookback"                => { name => 'lookback', },
+                                });
+    $self->{statefile_cache} = centreon::plugins::statefile->new(%options);
+
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::init(%options);
+
+    if (($self->{perfdata}->threshold_validate(label => 'warning', value => $self->{option_results}->{warning})) == 0) {
+       $self->{output}->add_option_msg(short_msg => "Wrong warning threshold '" . $self->{option_results}->{warning} . "'.");
+       $self->{output}->option_exit();
+    }
+    if (($self->{perfdata}->threshold_validate(label => 'critical', value => $self->{option_results}->{critical})) == 0) {
+       $self->{output}->add_option_msg(short_msg => "Wrong critical threshold '" . $self->{option_results}->{critical} . "'.");
+       $self->{output}->option_exit();
+    }
+
+    $self->{statefile_cache}->check_options(%options);
+}
+
+sub run {
+    my ($self, %options) = @_;
+    # $options{sql} = sqlmode object
+    $self->{sql} = $options{sql};
+
+    $self->{sql}->connect();
+    
+    if (!($self->{sql}->is_version_minimum(version => '5'))) {
+        $self->{output}->add_option_msg(short_msg => "MySQL version '" . $self->{sql}->{version} . "' is not supported (need version >= '5.x').");
+        $self->{output}->option_exit();
+    }
+    
+    $self->{sql}->query(query => q{SHOW /*!50000 global */ STATUS WHERE Variable_name IN ('Com_select', 'Qcache_hits')});
+    my $new_datas = {Com_select => undef, Qcache_hits => undef};
+    my $result = $self->{sql}->fetchall_arrayref();
+    foreach my $row (@{$result}) {
+        $new_datas->{$$row[0]} = $$row[1];
+    }
+    foreach (keys %$new_datas) {
+        if (!defined($new_datas->{$_})) {
+            $self->{output}->add_option_msg(short_msg => "Cannot get '$_' variable.");
+            $self->{output}->option_exit();
+        }
+    }
+    $self->{sql}->query(query => q{SHOW VARIABLES WHERE Variable_name IN ('have_query_cache', 'query_cache_size')});
+    my ($dummy, $have_query_cache) = $self->{sql}->fetchrow_array();
+    if (!defined($have_query_cache)) {
+        $self->{output}->add_option_msg(short_msg => "Cannot get have_query_cache variable.");
+        $self->{output}->option_exit();
+    }
+    ($dummy, my $query_cache_size) = $self->{sql}->fetchrow_array();
+    if (!defined($query_cache_size)) {
+        $self->{output}->add_option_msg(short_msg => "Cannot get query_cache_size variable.");
+        $self->{output}->option_exit();
+    }
+    if ($have_query_cache !~ /^yes$/i || $query_cache_size == 0) {
+        $self->{output}->output_add(severity => 'OK',
+                                    short_msg => "Query cache is turned off.");
+        $self->{output}->display();
+        $self->{output}->exit();
+    }
+
+    $self->{statefile_cache}->read(statefile => 'mysql_' . $self->{mode} . '_' . $self->{sql}->get_unique_id4save());
+    my $old_timestamp = $self->{statefile_cache}->get(name => 'last_timestamp');
+    $new_datas->{last_timestamp} = time();
+
+    my $old_com_select = $self->{statefile_cache}->get(name => 'Com_select');
+    my $old_qcache_hits = $self->{statefile_cache}->get(name => 'Qcache_hits');
+    if (defined($old_com_select) && defined($old_qcache_hits) &&
+        $new_datas->{Com_select} >= $old_com_select &&
+        $new_datas->{Qcache_hits} >= $old_qcache_hits) {
+   
+        my %prcts = ();
+        my $total_select_requests = ($new_datas->{Com_select} - $old_com_select) + ($new_datas->{Qcache_hits} - $old_qcache_hits);
+        my $total_hits = $new_datas->{Qcache_hits} - $old_qcache_hits;
+        $prcts{qcache_hitrate_now} = ($total_select_requests == 0) ? 100 : ($total_hits) * 100 / $total_select_requests;
+        $prcts{qcache_hitrate} = (($new_datas->{Qcache_hits} + $new_datas->{Com_select}) == 0) ? 100 : ($new_datas->{Qcache_hits}) * 100 / ($new_datas->{Qcache_hits} + $new_datas->{Com_select});
+        
+        my $exit_code = $self->{perfdata}->threshold_check(value => $prcts{'qcache_hitrate' . ((defined($self->{option_results}->{lookback})) ? '' : '_now' )}, threshold => [ { label => 'critical', 'exit_litteral' => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
+        $self->{output}->output_add(severity => $exit_code,
+                                    short_msg => sprintf("query cache hitrate at %.2f%%", $prcts{'qcache_hitrate' . ((defined($self->{option_results}->{lookback})) ? '' : '_now')})
+                                    );
+        $self->{output}->perfdata_add(label => 'qcache_hitrate' . ((defined($self->{option_results}->{lookback})) ? '' : '_now'), unit => '%',
+                                      value => sprintf("%.2f", $prcts{'qcache_hitrate' . ((defined($self->{option_results}->{lookback})) ? '' : '_now')}),
+                                      warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning'),
+                                      critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical'),
+                                      min => 0);
+        $self->{output}->perfdata_add(label => 'qcache_hitrate' . ((defined($self->{option_results}->{lookback})) ? '_now' : ''), unit => '%',
+                                      value => sprintf("%.2f", $prcts{'qcache_hitrate' . ((defined($self->{option_results}->{lookback})) ? '_now' : '')}),
+                                      min => 0);
+    }
+    
+    $self->{statefile_cache}->write(data => $new_datas); 
+    if (!defined($old_timestamp)) {
+        $self->{output}->output_add(severity => 'OK',
+                                    short_msg => "Buffer creation...");
+    }
+    
+    $self->{output}->display();
+    $self->{output}->exit();
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check hitrate in the Query Cache.
+
+=over 8
+
+=item B<--warning>
+
+Threshold warning.
+
+=item B<--critical>
+
+Threshold critical.
+
+=item B<--lookback>
+
+Threshold isn't on the percent calculated from the difference ('qcache_hitrate_now').
+
+=back
+
+=cut
diff --git a/database/mysql/plugin.pm b/database/mysql/plugin.pm
index 8ca7976c5..d220585b4 100644
--- a/database/mysql/plugin.pm
+++ b/database/mysql/plugin.pm
@@ -48,16 +48,17 @@ sub new {
 
     $self->{version} = '0.1';
     %{$self->{modes}} = (
-                         'connection-time' => 'database::mysql::mode::connectiontime',
-                         'databases-size' => 'database::mysql::mode::databasessize',
-                         'queries' => 'database::mysql::mode::queries',
-                         'slow-queries' => 'database::mysql::mode::slowqueries',
-                         'threads-connected' => 'database::mysql::mode::threadsconnected',
-                         'uptime' => 'database::mysql::mode::uptime',
-                         'open-files' => 'database::mysql::mode::openfiles',
-                         'innodb-bufferpool-hitrate' => 'database::mysql::mode::innodbbufferpoolhitrate',
-                         'myisam-keycache-hitrate' => 'database::mysql::mode::myisamkeycachehitrate',
-                         'replication-master-slave' => 'database::mysql::mode::replicationmasterslave',
+                         'connection-time'              => 'database::mysql::mode::connectiontime',
+                         'databases-size'               => 'database::mysql::mode::databasessize',
+                         'queries'                      => 'database::mysql::mode::queries',
+                         'slow-queries'                 => 'database::mysql::mode::slowqueries',
+                         'threads-connected'            => 'database::mysql::mode::threadsconnected',
+                         'uptime'                       => 'database::mysql::mode::uptime',
+                         'open-files'                   => 'database::mysql::mode::openfiles',
+                         'innodb-bufferpool-hitrate'    => 'database::mysql::mode::innodbbufferpoolhitrate',
+                         'myisam-keycache-hitrate'      => 'database::mysql::mode::myisamkeycachehitrate',
+                         'qcache-hitrate'               => 'database::mysql::mode::qcachehitrate',
+                         'replication-master-slave'     => 'database::mysql::mode::replicationmasterslave',
                          );
     $self->{sql_modes}{mysqlcmd} = 'database::mysql::mysqlcmd';