Debian系统升级Redis版本主要有以下两种方式：
sudo apt update
sudo apt upgrade redis-server
sudo apt install redis-server=6:6.2.6-1）sudo cp /etc/redis/redis.conf /etc/redis/redis.conf.bak
sudo cp -r /var/lib/redis /var/lib/redis.bak
sudo apt install build-essential tcl
wget http://download.redis.io/redis-stable.tar.gz
tar xzf redis-stable.tar.gz
cd redis-stable
make && sudo make install
sudo cp redis.conf /etc/redis/redis.confsudo systemctl start redisredis-server --versiondir、appendonly等）。
