New returns a Backend that uses a driver to communicate with the database.

TestDriver executes the backend compliance suite for a driver.

DefaultDatabase is default name of the backend database.

DefaultPurgePeriod is the default frequency for purging database records.

DefaultRetryDelayPeriod is the default delay before a transaction will retry on serialization failure.

DefaultRetryTimeout is the default amount time allocated to retrying transactions.

ErrAlreadyExists is returned by a transaction when a SQL query returns a unique constraint violation.

ErrNotFound is returned by a transaction when a SQL query returns sql.ErrNoRows.

ErrRetry is set as a transaction error when the transaction should be retried due to serialization failure.

Backend implements a storage backend for SQL databases.

Config defines a configuration for the Backend.

Events is returned from the GetEvents Tx method.

DB defines an interface to a database instance backed by a connection pool.

Driver defines the interface implemented by specific SQL backend implementations such as postgres.

Tx defines a database transaction.