Confusing about how to create connection pools

[GoodManWEN]

Hi everyone, I can see two types of creating connection pool's code in the Migration to 2.0 section of the documentation.

One of them says I can create a connection pool like this:

async def redis_pool():
    # Redis client bound to pool of connections (auto-reconnecting).
    redis = aioredis.from_url(
        "redis://localhost", encoding="utf-8", decode_responses=True
    )
    await redis.set("my-key", "value")
    val = await redis.get("my-key")
    print(val)

The other one says I should use ConnectionPool

async def main():
    pool = aioredis.ConnectionPool.from_url(
        "redis://localhost", decode_responses=True
    )
    meanings = aioredis.Redis(connection_pool=pool)
    try:
        await meanings.set("life", 42)
        print(f"The answer: {await meanings.get('life')}")
    finally:
        await pool.disconnect()

This is confusing, if I want to create multiple client-to-server links and share them with connection pooling in multiple aio "threads", then whats the correct way to do so?

Also again, if I do share a connection pool between multiple system threads, is it thread-safe? Thx!