Configuration
=============
:py:mod:`sprockets-postgres <sprockets_postgres>` is configured via environment variables. The following table
details the configuration options and their defaults.

+---------------------------------+--------------------------------------------------+-------------------+
| Variable                        | Definition                                       | Default           |
+=================================+==================================================+===================+
| ``POSTGRES_URL``                | The PostgreSQL URL to connect to                 |                   |
+---------------------------------+--------------------------------------------------+-------------------+
| ``POSTGRES_MAX_POOL_SIZE``      | Maximum connection count to Postgres per backend | ``0`` (Unlimited) |
+---------------------------------+--------------------------------------------------+-------------------+
| ``POSTGRES_MIN_POOL_SIZE``      | Minimum or starting pool size.                   | ``1``             |
+---------------------------------+--------------------------------------------------+-------------------+
| ``POSTGRES_CONNECTION_TIMEOUT`` | The maximum time in seconds to spend attempting  | ``10``            |
|                                 | to create a new connection.                      |                   |
+---------------------------------+--------------------------------------------------+-------------------+
| ``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``          |
+---------------------------------+--------------------------------------------------+-------------------+