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+
+## Production Run
+
+Start small:
+
+    export FATCAT_AUTH_WORKER_CLEANUP=[...]
+
+    wc -l /srv/fatcat/datasets/nonlowercase_doi_releases.tsv
+    # 140530
+
+    head -n100 /srv/fatcat/datasets/nonlowercase_doi_releases.tsv \
+        | python -m fatcat_tools.cleanups.release_lowercase_doi -
+    # Counter({'total': 100, 'update': 100, 'skip': 0, 'insert': 0, 'exists': 0})
+
+    # same command again to test not duping updates
+    Counter({'total': 100, 'skip-existing-doi-fine': 100, 'skip': 0, 'insert': 0, 'update': 0, 'exists': 0})
+
+    # example editgroup_cld5qe34bzg7xg7g4cz5skgaw4
+
+Database size just before, while some other edits happening, PostgreSQL 11.6: 762.66G
+
+Ok, run a bunch in parallel:
+
+    cat /srv/fatcat/datasets/nonlowercase_doi_releases.tsv \
+        | parallel -j8 --linebuffer --round-robin --pipe python -m fatcat_tools.cleanups.release_lowercase_doi -
+    # Counter({'total': 24022, 'update': 24022, 'skip': 0, 'insert': 0, 'exists': 0})
+    # Counter({'total': 38836, 'update': 38836, 'skip': 0, 'insert': 0, 'exists': 0})
+    # Counter({'total': 38836, 'update': 38836, 'skip': 0, 'insert': 0, 'exists': 0})
+    # Counter({'total': 38836, 'update': 38736, 'skip-existing-doi-fine': 100, 'skip': 0, 'insert': 0, 'exists': 0})
+
+Over 3k TPS in `pg_activity`.
+
+Should have included `pv -l` in the pipeline.
+
+Final database size 763.14G, so only a couple hundred MByte of growth, totally
+fine.
+
+
+## Verification
+
+Re-dump release extids, in production:
+
+    sudo -u postgres psql fatcat_prod < dump_release_extid.sql | egrep -v ^BEGIN$ | egrep -v ^ROLLBACK$ | pv -l | pigz > /srv/fatcat/snapshots/release_extid.tsv.gz
+
+Filter to non-lowercase DOIs:
+
+    zcat release_extid.tsv.gz \
+        | cut -f1,3 \
+        | rg '[A-Z]' \
+        | pv -l \
+        > nonlowercase_doi.tsv
+
+Zero returned, hurray!