RedisException

read error on connection (/www/zhanqun1/protected/extensions/helpers/CommonHelper.php:700)

#0 /www/zhanqun1/protected/extensions/helpers/CommonHelper.php(700): Redis->get('SELECT title FR...')
#1 /www/zhanqun1/protected/controllers/SiteController.php(516): CommonHelper::getRedis('SELECT title FR...')
#2 /www/zhanqun1/protected/controllers/SiteController.php(122): SiteController->__getTitle('200605')
#3 /www/library/yii/framework/web/actions/CInlineAction.php(50): SiteController->actionIndex()
#4 /www/library/yii/framework/web/CController.php(309): CInlineAction->runWithParams(Array)
#5 /www/library/yii/framework/web/CController.php(287): CController->runAction(Object(CInlineAction))
#6 /www/library/yii/framework/web/CController.php(266): CController->runActionWithFilters(Object(CInlineAction), Array)
#7 /www/library/yii/framework/web/CWebApplication.php(276): CController->run('index')
#8 /www/library/yii/framework/base/CErrorHandler.php(310): CWebApplication->runController('site/index')
#9 /www/library/yii/framework/base/CErrorHandler.php(183): CErrorHandler->render('error', Array)
#10 /www/library/yii/framework/base/CErrorHandler.php(108): CErrorHandler->handleException(Object(CHttpException))
#11 /www/library/yii/framework/base/CApplication.php(713): CErrorHandler->handle(Object(CExceptionEvent))
#12 [internal function]: CApplication->handleException(Object(CHttpException))
#13 {main}