Hi > extension that hooks into PostgreSQL We have any hooks that can be used for such purposes? Sometimes I think how to implement counters "bytes sent to client"/"bytes recv from client" in pg_stat_statements but did not found good place. Where we can accumulate such counters and how they can be accessible from extension? Extend DestReceiver or add counter directly in src/backend/libpq/pqcomm.c ? PS: some returned with feedback old patch: https://www.postgresql.org/message-id/flat/CAHhq2wJXRqTMJXZwMAOdtQOkxSKxg_aMxxofhvCo%3DRGXvh0AUg%40mail.gmail.com regards, Sergei
