schema_migrations check is executed 60 times a second generate 100K rows/second from postgres.
The following query is being executed about 60 times a second
SELECT "schema_migrations"."version" FROM "schema_migrations" ORDER BY "schema_migrations"."version" ASC
With 1842 rows in
schema_migrations (currently), this means that the application is returning 100k rows from this table every second: https://prometheus-db.gprd.gitlab.net/graph?g0.range_input=1w&g0.expr=sum(rate(pg_stat_statements_rows%7Bqueryid%3D%221783654900%22%7D%5B10m%5D))%20by%20(queryid)&g0.tab=0