Bypass postgres notify message to AWS SQS or SNS.
DATABASE_URL=postgresql://pg_hostname/database
TARGET=sns
|sqs
PG_CHANNELS=channel1,channel2
SQS_URL=https://sqs.us-west-1.amazonaws.com/0000000000/queue-name
SNS_TOPIC_ARN=arn:aws:sns:us-west-1:0000000000:topic-name