🛠️ Developer Tools

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

Your e-commerce site's blowing through API quotas because you're fetching exchange rates on every page load. Caching fixes it—dropping 10,000 daily calls to just 24, without users noticing.

theAIcatchup Apr 10, 2026 4 min read
Code snippet showing exchange rate caching in Node.js to dodge API rate limits

⚡ Key Takeaways

  • Cache exchange rates for 5 minutes to slash API calls 99% and stick to free tiers. 𝕏
  • Use background refreshes: Serve stale instantly, update quietly—no user waits. 𝕏
  • Redis shares cache across servers; pre-fetch for known pairs on cron jobs. 𝕏
Published by

theAIcatchup

Community-driven. Code-first.

#API caching #API rate limits #AllRatesToday #Redis caching #cache exchange rates #exchange rate API #exchange rate caching #exchange rates caching #rate limits #stale-while-revalidate

Worth sharing?

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

Originally reported by Dev.to

Related Stories

📬

Stay in the loop

The week's most important stories from theAIcatchup, delivered once a week.

No spam. Unsubscribe any time.