add tables optimization to the cron/cleaner task

crontab/cleaner.php

@@ -189,8 +189,12 @@ try {
   $logsCleanerDeleted += $db->deleteLogCleaner(time() - CLEAN_LOG_SECONDS_OFFSET);
   $logsCrawlerDeleted += $db->deleteLogCrawler(time() - CRAWL_LOG_SECONDS_OFFSET);
 
+  // Commit results
   $db->commit();
 
+  // Optimize tables
+  $db->optimize();
+
 } catch(Exception $e) {
 
   var_dump($e);

library/mysql.php

@@ -629,4 +629,18 @@ class MySQL {
 
     return $query->rowCount();
   }
+
+  public function optimize() {
+
+    $this->_db->query('OPTIMIZE TABLE `host`');
+    $this->_db->query('OPTIMIZE TABLE `hostPage`');
+    $this->_db->query('OPTIMIZE TABLE `hostPageDescription`');
+    $this->_db->query('OPTIMIZE TABLE `hostPageSnap`');
+    $this->_db->query('OPTIMIZE TABLE `hostPageToHostPage`');
+
+    $this->_db->query('OPTIMIZE TABLE `logCleaner`');
+    $this->_db->query('OPTIMIZE TABLE `logCrawler`');
+
+    $this->_db->query('OPTIMIZE TABLE `manifest`');
+  }
 }