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Hey, author of the post here.

The whole app lives in Firebase. Once a user hits a profile page, a cloud function runs, get the data from the DB, constructs the page, and caches it at the CDN for 24h.

If a user add/delete something on their profile, the cache is removed. Otherwise, the content is served from cache only with no need for a lot of computation.

With this, you can still get your way through Firebase's generous free tier https://firebase.google.com/pricing



Firebase free tier is only 125k invocation per month. How are covering +1M invocations per month on free tier?


Caches hit on the CDN are not trigerring an invocation.

So it's not covering 1M+ invocations per month on the free tier.




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