Heroku PostgreSQL Database

Logs from heroku postgres and using pgrest app. Log format: source=HEROKU_POSTGRESQL addon=storage-replica-1 sample#current_transaction=224120752 sample#db_size=355884880431bytes sample#tables=17 sample#active-connections=19 sample#waiting-connections=0 sample#index-cache-hit-rate=0.87435 sample#table-cache-hit-rate=0.76407 sample#load-avg-1m=0.8725 sample#load-avg-5m=0.675 sample#load-avg-15m=0.4525 sample#read-iops=4851.8 sample#write-iops=1.4512 sample#tmp-disk-used=543633408 sample#tmp-disk-available=72435159040 sample#memory-total=32402856kB sample#memory-free=204284kB sample#memory-cached=31013876kB sample#memory-postgres=129548kB sample#follower-lag-commits=106 sample#wal-percentage-used=0.07494363207220228