$ heroku pg:info
=== HEROKU_POSTGRESQL_ORANGE_URL, DATABASE_URL
Plan: Hobby-basic
Status: Available
Connections: 4/20
PG Version: 10.6
Created: 2017-12-16 18:16 UTC
Data Size: 4.00 GB
Tables: 58
Rows: 10050300/10000000 (Above limits, access disruption imminent)
やばい。突然ですがしばらく止まります。