"""Redis 连接池与共享访问封装。"""
import redis.asyncio as aioredis

from app.config import settings

_pool: aioredis.Redis | None = None


async def get_redis_pool() -> aioredis.Redis:
    """返回全局共享的 Redis 客户端（懒初始化）。"""
    global _pool
    if _pool is None:
        _pool = aioredis.from_url(settings.redis_url, decode_responses=True)
    return _pool