redis

Get Redis keys and values at command prompt


I have a very small data saved in Redis and the following is working as expected that will allow me to download all keys.

redis-cli keys * 

Is there any way to get the keys+values *?


Solution

  • There's no command for that, but you can write a script to do so.

    You will need to perform for each key a "type" command:

    > type <key>
    

    and depending on the response perform:

    Keep in mind that for hashes and sorted sets you will be getting the keys/scores and values.

    A possible sh implementation:

    #!/bin/sh -eu
    keys=`redis-cli keys '*'`
    if [ "$keys" ]; then
        echo "$keys" | while IFS= read -r key; do
            type=`echo | redis-cli type "$key"`
            case "$type" in
                string) value=`echo | redis-cli get "$key"`;;
                hash) value=`echo | redis-cli hgetall "$key"`;;
                set) value=`echo | redis-cli smembers "$key"`;;
                list) value=`echo | redis-cli lrange "$key" 0 -1`;;
                zset) value=`echo | redis-cli zrange "$key" 0 -1 withscores`;;
            esac
            echo "> $key ($type):"
            echo "$value" | sed -E 's/^/    /'
        done
    fi
    

    But do note:

    Warning: consider KEYS as a command that should only be used in production environments with extreme care. It may ruin performance when it is executed against large databases. This command is intended for debugging and special operations, such as changing your keyspace layout.

    https://redis.io/commands/keys