What are counter_culture gems in Ruby on Rails?

Counter_culture extends Rails counter_cache for conditional counts, async refreshes on replicas — perfect for dashboards at scale without DB overload.

How to optimize Sidekiq for high-traffic Rails apps?

Split queues with concurrency limits (tracking:10, low:1), consolidate workers, use sidekiq-limit_fetch — prevents low-pri jobs starving hot paths.

When should I migrate Rails analytics to BigQuery?

If Postgres queries scan 100k+ rows or complex time-series time out — but test complexity; revert if not worth it.

🗄️ Databases & Backend

How FirstPromoter Doubled Rails Throughput to 35M While Getting Faster: 7 Brutal Lessons

Imagine your Rails app swallowing double the traffic — 35 million requests a week — and spitting out pages faster than before. FirstPromoter did it, and their gritty lessons rewrite the scaling playbook.

theAIcatchup Apr 09, 2026 3 min read

Performance graph of FirstPromoter Rails app showing 35M weekly requests and sub-3s p95 latency

⚡ Key Takeaways

Scope counter refreshes to active data only — blind crons kill performance. 𝕏
Redis for queues, counters, caches: non-negotiable at webhook scale. 𝕏
BigQuery for heavy analytics, but measure added complexity before migrating. 𝕏

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#PostgreSQL #Ruby on Rails #performance-scaling #postgresql optimization #rails scaling #ruby on rails performance #sidekiq #sidekiq tuning

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