Redis
Redis 
#install just Redis CLI with redis-cli binary from tarball
apt install -y libjemalloc-dev gcc make
wget http://download.redis.io/redis-stable.tar.gz
tar xvzf redis-stable.tar.gz
cd redis-stable
make
cp src/redis-cli /usr/local/bin/
chmod 755 /usr/local/bin/redis-cli
cd ..
rm -rf redis-stable*
redis-cli -c -h redis.host -p 6379
> role
> info
> info memory
> client list
> monitor
> dbsize
#CLEAR
> flushdb
> flushall sync
> flushall async