您可以使用（从redis cli）删除所有密钥：

flushall

或从命令行运行此命令（bash）

redis-cli --scan --pattern aihello_user* | xargs redis-cli del

如果你正在尝试删除匹配前缀的键，那么你可以尝试下面的命令

redis-cli keys <PREFIX>'*' | xargs redis-cli del

此处**keys '*'**将给予所有具有匹配前缀的键，然后del命令将删除所有键。

Whether you DEL or EXPIRE , once Lua script runs it will block other clients and if it runs for too long it the lua-time-limit timeout. Despite your reluctance for looping, I strongly recommend you do.
Expiry vs deletion may lessen some of the immediate load (yet to be empirically proven), so feel free to go with one or the other. In either case, use a client-side loop on a SCAN operation to invoke the command for each key. If you have a server/worker process somewhere in your architecture, you can consider delegating this task to it so the client will not be kept busy.
EDIT per comment: Variadic commands such as DEL are generally more performant than non-variadic commands, however here you're comparing two different operations so there are no assurances. The DEL approach is potentially more blocking because Redis will actually go ahead and delete the keys immediately - if you have a lot of keys to delete and/or their values are big, this could take more time. The EXPIRE approach tries to avoid this by leveraging on Redis' lazy expiry mechanism (it uses idle time to do so when possible), so the deletion-due-to-expiry load is theoretically better distributed. The best way to determine which works better for you is by testing both and comparing - I'd love to learn of your results!

我到处找这个，最后写了一个bash脚本，它包含一个主机、端口和一个模式。看起来工作得很好。下面是Gist。

if [ $# -ne 3 ] 
then
  echo "Delete keys from Redis matching a pattern using SCAN & DEL"
  echo "Usage: $0 <host> <port> <pattern>"
  exit 1
fi

cursor=-1
keys=""

while [ $cursor -ne 0 ]; do
  if [ $cursor -eq -1 ]
  then
    cursor=0
  fi

  reply=`redis-cli -h $1 -p $2 SCAN $cursor MATCH $3`
  cursor=`expr "$reply" : '\([0-9]*[0-9 ]\)'`
  if [[ $reply = *[[:space:]]* ]]
  then
    keys=${reply#[0-9]*[[:space:]]}
    for key in $keys; do
      echo "Delete the following key: $key"
      redis-cli -h $1 -p $2 DEL $key 
    done
  fi
done

redis-cli -h 127.0.0.1 -p 6379 --scan --pattern <pattern>* | xargs redis-cli unlink

使用扫描和取消链接不是阻止功能