python scan方式查询redis所有数据是否含有重复的key

demo

import redis

# 连接到 Redis 服务器
client = redis.StrictRedis(host='192.168.1.1', port=6379)

# 用于存储所有键和重复键的集合
all_keys = set()
duplicates = set()

# Redis 默认有 16 个数据库，索引从 0 到 15
for db in range(8):
    print(f"Scanning database {db}...")
    client.execute_command('SELECT', db)

    # 使用 SCAN 命令迭代获取 key
    cursor = '0'
    while cursor != 0:
        cursor, keys = client.scan(cursor=cursor, count=100)
        for key in keys:
            # 检查是否已经存在于集合中
            if key in all_keys:
                duplicates.add(key)
            else:
                all_keys.add(key)

# 输出结果
if duplicates:
    print("Duplicate keys found:")
    for key in duplicates:
        print(key.decode('utf-8'))  # keys are returned as bytes, so decode them
else:
    print("No duplicates found.")