Script to Import/Export data from Valkey/Redis DBs. Very useful to migrate from Redis 7.4 to Valkey (development diverged; Valkey is based off of Redis 7.2.x and the RDB formats are no longer compatible). Assumes Valkey/Redis server is running locally on the default port without any passwords but you can change all of that

valkey-data-tool.py

import redis
import json

# Connect to Valkey/Redis
client = redis.Redis(host='127.0.0.1', decode_responses=True)

def dump_to_json(output_file="redis_dump.json"):
    all_data = {}

    cursor = 0
    while True:
        cursor, keys = client.scan(cursor, count=1000)
        for key in keys:
            key_type = client.type(key)
            if key_type == 'string':
                all_data[key] = client.get(key)
            elif key_type == 'hash':
                all_data[key] = client.hgetall(key)
            elif key_type == 'list':
                all_data[key] = client.lrange(key, 0, -1)
            elif key_type == 'set':
                all_data[key] = list(client.smembers(key))
            elif key_type == 'zset':
                all_data[key] = client.zrange(key, 0, -1, withscores=True)

        if cursor == 0:
            break

    with open(output_file, "w") as f:
        json.dump(all_data, f, indent=2)

    print(f"Dump completed: {output_file}")

def load_from_json(input_file="redis_dump.json"):
    with open(input_file, "r") as f:
        all_data = json.load(f)

    for key, value in all_data.items():
        if isinstance(value, str):  # String
            client.set(key, value)
        elif isinstance(value, dict):  # Hash
            for field, field_value in value.items():
                client.hset(key, field, field_value)
        elif isinstance(value, list):
            if all(isinstance(i, list) and len(i) == 2 for i in value):  # ZSet
                client.zadd(key, dict(value))
            else:  # List
                client.rpush(key, *value)
        elif isinstance(value, set):  # Set
            client.sadd(key, *value)

    print("Load completed.")

# User choice to dump or load data
options = {
    '1': ('Dump data from Valkey/Redis to JSON', dump_to_json),
    '2': ('Load data from JSON to Valkey/Redis', load_from_json)
}

print("Choose an option:")
for key, (description, _) in options.items():
    print(f"{key}. {description}")

choice = input("Enter your choice (1/2): ")

if choice in options:
    _, function = options[choice]
    function()
else:
    print("Invalid choice. Exiting.")
    exit()