The databases are completely useless for anything other than trivial demos.
Cloud functions are plagued by cold starts and deploy usually takes minutes. These are by far the worse cloud function offering in the market right now.
Storage is fast but it is extremely overpriced.
The JS client used to be super heavy. I think they've improved that with tree shaking but still, if you're using all their services, you will end up with huge JS bundle just for the Firebase stuff.
All your app becomes deeply locked in into Firebase. It's designed so that you have to invest a huge dev effort if you want to leave. Firebase could have adopted standards like GraphQL or maybe added a PG offering like Supabase, but no.
The static hosting is probably one of the slowest options in the market. At least that was the case in 2020 when I did these benchmarks.
The databases are completely useless for anything other than trivial demos.
Cloud functions are plagued by cold starts and deploy usually takes minutes. These are by far the worse cloud function offering in the market right now.
Storage is fast but it is extremely overpriced.
The JS client used to be super heavy. I think they've improved that with tree shaking but still, if you're using all their services, you will end up with huge JS bundle just for the Firebase stuff.
All your app becomes deeply locked in into Firebase. It's designed so that you have to invest a huge dev effort if you want to leave. Firebase could have adopted standards like GraphQL or maybe added a PG offering like Supabase, but no.
The static hosting is probably one of the slowest options in the market. At least that was the case in 2020 when I did these benchmarks.
https://www.pierbover.com/posts/static-hosting-benchmark-202...
Honestly I could go on but just don't use Firebase.