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Connection Pool

Other than the default connection pool, alternative pools can be used in their own use cases. There are options from dialects (currently only :class:`~gino.dialects.asyncpg.NullPool`), and users can define their own pools. The base class should be :class:`~gino.dialects.base.Pool`.

To use non-default pools in raw GINO:

from gino.dialects.asyncpg import NullPool
create_engine('postgresql://...', pool_class=NullPool)

To use non-default pools in extensions (taking Sanic as an example):

from gino.dialects.asyncpg import NullPool
from gino.ext.sanic import Gino

app = sanic.Sanic()
app.config.DB_HOST = 'localhost'
app.config.DB_KWARGS = dict(
db = Gino()
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