sprockets-postgres 1.3.1

An asynchronous Postgres client and mixin for Tornado applications

An set of mixins and classes for interacting with PostgreSQL using asyncio in Tornado / sprockets.http applications using aiopg.

Installation

sprockets-postgres is available on the Python package index and is installable via pip:

pip install sprockets-postgres

Documentation

Documentation is available at sprockets-postgres.readthedocs.io.

Configuration

The following table details the environment variable configuration options:

Variable	Definition	Default
POSTGRES_URL	The PostgreSQL URL to connect to
POSTGRES_MAX_POOL_SIZE	Maximum connection count to Postgres per backend	10
POSTGRES_MIN_POOL_SIZE	Minimum or starting pool size.	1
POSTGRES_CONNECTION_TIMEOUT	The maximum time in seconds to spend attempting to create a new connection.	10
POSTGRES_CONNECTION_TTL	Time-to-life in seconds for a pooled connection.	300
POSTGRES_QUERY_TIMEOUT	Maximum execution time for a query in seconds.	60
POSTGRES_HSTORE	Enable HSTORE support in the client.	FALSE
POSTGRES_JSON	Enable JSON support in the client.	FALSE
POSTGRES_UUID	Enable UUID support in the client.	TRUE

If POSTGRES_URL uses a scheme of postgresql+srv, a SRV DNS lookup will be performed and the lowest priority record with the highest weight will be selected for connecting to Postgres.

AWS’s ECS service discovery does not follow the SRV standard, but creates SRV records. If POSTGRES_URL uses a scheme of aws+srv, a SRV DNS lookup will be performed using the correct format for ECS service discovery. The lowest priority record with the highest weight will be selected for connecting to Postgres.

Requirements

• aiodns

• aiopg

• sprockets.http

• Tornado

Version History

Available at https://sprockets-postgres.readthedocs.org/en/latest/history.html