What does counter_culture do in Rails?

Handles conditional counter caches beyond Rails defaults — perfect for active-only counts without full rescans.

How to scale Sidekiq for Rails webhooks?

Separate queues with limits, dedicated processes per priority, consolidate similar jobs to cut DB hits.

Does Ruby on Rails scale to millions of users?

Yes, with Redis caching , replica reads, scoped counters — but profile everything first, or it'll bite.

Scaling Rails to 35M Requests: 7 Brutal Lessons from FirstPromoter's Trenches

Your Rails app's humming along fine until one day, millions of users crash the party. FirstPromoter's battle-tested tweaks show how to keep it fast — without the hype.

theAIcatchup Apr 09, 2026 4 min read 10 views

Line chart of FirstPromoter Rails throughput doubling from 15M to 35M weekly requests

⚡ Key Takeaways

Scope counter refreshes to active data only — slash cron times dramatically. 𝕏
Profile before preloading associations; overkill spikes memory. 𝕏
Hybrid Postgres + BigQuery for analytics; revert if complexity outweighs speed. 𝕏

Published by

theAIcatchup

Community-driven. Code-first.

#PostgreSQL counters #PostgreSQL optimization #Redis caching #Ruby on Rails #Ruby on Rails performance #Sidekiq optimization #Sidekiq tuning #counter_culture #performance scaling #rails scaling #scaling Rails

Worth sharing?

Get the best Open Source stories of the week in your inbox — no noise, no spam.

Originally reported by Dev.to

⚡ Key Takeaways

The 60-Second TL;DR

theAIcatchup

Share this article

Worth sharing?

Related Stories

Ruby on Rails: Why It Crushes Java's Bloat

Layercache: Caching Without the Redis Heartburn

Exchange Rate APIs Are Draining Your Wallet—Cache Them Before It's Too Late

Rails Streams OpenAI Tokens Live — Ditch the Spinners

Stay in the loop