Redis学习笔记

安装脚本

# #!/bin/bash

# install redis-stack-server
curl -fsSL https://packages.redis.io/gpg | sudo gpg --dearmor -o /usr/share/keyrings/redis-archive-keyring.gpg
sudo chmod 644 /usr/share/keyrings/redis-archive-keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/redis-archive-keyring.gpg] https://packages.redis.io/deb $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/redis.list
sudo apt-get update
sudo apt-get install redis-stack-server

# setup
echo "setup redis"
sudo echo "requirepass your_password" >> /etc/redis-stack.conf
sudo echo "bind 0.0.0.0" >> /etc/redis-stack.conf

# restart
sudo service redis-stack-server start

登录

redis-cli -h hostname -a password

Use redis in Docker

详见Use mysql and redis in Docker | EuDs’s Blog

pub sub

• PUBSUB CHANNELS [pattern]
• 作用： Lists the currently active channels.(An active channel is a Pub/Sub channel with one or more subscribers (excluding clients subscribed to patterns).)
• 补充：我曾犯过这样一个错误，UNSUBSCRIBE channel1,然后发现PUBSUB CHANNELS还是有它,就在那纳闷，好一会才反应过来，可能这个channel还有其他被监听的地方。

参考

• Understanding Pub/Sub in Redis (Getting Started) | Redis with Raphael De Lio
• PUBSUB CHANNELS | Docs

List

• Redis lists | Docs
• lpop
• LPUSH adds a new element to the head of a list; RPUSH adds to the tail.
• LPOP removes and returns an element from the head of a list; RPOP does the same but from the tails of a list.
• LLEN returns the length of a list.
• LMOVE atomically moves elements from one list to another.
• LRANGE extracts a range of elements from a list.
• LTRIM reduces a list to the specified range of elements.