8 vCPU) + PocketBase

Body:

Hey everyone

I’m running a betting prediction app that currently handles 30,000 concurrent users on the Railway Hobby plan (which provides up to 8GB RAM and 8 vCPUs per service).

Stack:

• PocketBase (SQLite-based backend)

• Cloudflare Workers + KV for external validation and caching

• IndexedDB caching on mobile (Android WebView app)

• WAL + PRAGMA tuned for high concurrency

Usage Pattern:

• Continuous read/write operations (predictions, credits, referrals)

• ~200,000 reads/min and 50,000 writes/min

• Cache-first architecture + external job handling

Question:

Since the Hobby plan includes $5/month with $5 of usage credits, and any excess usage (CPU/RAM) is billed separately, is it realistic to expect this setup to run for a full 30 days without extra charges, given this traffic?

I know that the resources (8GB RAM / 8 vCPU) are generous, but I’m concerned about hidden overages or silent throttling once the free credit is used up.

Any tips, similar experiences, or cost optimization strategies are welcome

Thanks in advance!