socket error on read socket

#0 /home/www/giggs.qap.la/lib/Cm/Cache/Backend/Redis.php(198): Credis_Client->__call('hGet', Array)
#1 /home/www/giggs.qap.la/lib/Cm/Cache/Backend/Redis.php(198): Credis_Client->hGet('zc:k:9ea_CONFIG...', 'd')
#2 /home/www/giggs.qap.la/lib/Zend/Cache/Core.php(306): Cm_Cache_Backend_Redis->load('9ea_CONFIG_GLOB...', false)
#3 /home/www/giggs.qap.la/lib/Varien/Cache/Core.php(158): Zend_Cache_Core->load('CONFIG_GLOBAL', false, false)
#4 /home/www/giggs.qap.la/app/code/core/Mage/Core/Model/Cache.php(379): Varien_Cache_Core->load('CONFIG_GLOBAL')
#5 /home/www/giggs.qap.la/app/code/core/Mage/Core/Model/App.php(1153): Mage_Core_Model_Cache->load('config_global')
#6 /home/www/giggs.qap.la/app/code/core/Mage/Core/Model/Config.php(538): Mage_Core_Model_App->loadCache('config_global')
#7 /home/www/giggs.qap.la/lib/Varien/Simplexml/Config.php(382): Mage_Core_Model_Config->_loadCache('config_global')
#8 /home/www/giggs.qap.la/app/code/core/Mage/Core/Model/Config.php(299): Varien_Simplexml_Config->loadCache()
#9 /home/www/giggs.qap.la/app/code/core/Mage/Core/Model/App.php(424): Mage_Core_Model_Config->loadModulesCache()
#10 /home/www/giggs.qap.la/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Model_App->_initModules()
#11 /home/www/giggs.qap.la/app/Mage.php(692): Mage_Core_Model_App->run(Array)
#12 /home/www/giggs.qap.la/index.php(84): Mage::run('', 'store')
#13 {main}