Memcached Issue connection lost in between Centos

I have a application server on with I m running load balance with nginx.. my memcached is getting crashed in between. below is my memcache.conf file. # memcached.conf port=11211 pidpath=/apps/home/memcached/bin/memcache_process.pid user=root maxconn=1024 cachesize=4096 options=20 logfile=/apps/home/memcached/logs/memcached.log startup file #!/bin/bash echo "Memcached is starting" MPATH=dirname "$0" cd $MPATH . ../../conf/memcached.cnf $MPATH/memcached -d -p $port -u $user -m $cachesize -c $maxconn -P $pidpath -d $options -vv > $logfile 2>&1 below are the memcached log file <584 version 584 VERSION 1.4.15 <617 new auto-negotiating client connection 614: Client using the ascii protocol <614 version 614 VERSION 1.4.15 <616 new auto-negotiating client connection <618 new auto-negotiating client connection <619 new auto-negotiating client connection <620 new auto-negotiating client connection <621 new auto-negotiating client connection <622 new auto-negotiating client connection <626 new auto-negotiating client connection <624 new auto-negotiating client connection <628 new auto-negotiating client connection <623 new auto-negotiating client connection <627 new auto-negotiating client connection <625 new auto-negotiating client connection <629 new auto-negotiating client connection <630 new auto-negotiating client connection <631 new auto-negotiating client connection 631: Client using the ascii protocol help me experts stuck on it since last 1 week, tried all things still not getting any thing..