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ekiddHNSource author
Lessons learnedExperience excerpt · English

With a managed database service, most of what you're paying goes to making sure that disaster …

… With a managed database service, most of what you're paying goes to making sure that disaster recovery works. And in my experience, it does. I've seen RDS database servers fail catastrophically, and completely rebuild in under 15 minutes with virtually no data loss, with almost no human intervention at all. If you care about your customers' data, I think that a reputable managed database is the right move until roughly the point that you can pay for a full time database administrator. At that point, sure, roll your own. But do regular disaster recovery tests, lest you discover that a recently departed DBA has been lying to you.

Original discussionI tried building my startup entirely on European infrastructure376 source comments · at import
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znnajdlaHN

Thank you for this. I'm in Europe as well with an established SaaS that's been running in production for years and I've converged on a similar stack (OVHCloud instead of Hetzner). However, I've realized you can stay sovereign and independent in any jurisdiction (not just Europe) just by simplifying your stack and running a few baremetal servers in-house. Just buy a few Mac Studios and run them in-house with power supply backup and networking redundancy and you're good to go to serve more than 10k - 100k requests/second which is good enough to serve a million customers. You don't need VMs: a single Mac Studio gets you 2–4x the power of m7i.2xlarge on AWS, and pays for itself within a few months of AWS bills. You can do local AI inference and get Claude Opus-level performance (Kimi K2.5) over a cluster of Mac Studios with Exo.Labs (an unofficial Apple partner). You get free S3-compatible o…

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ZN
znnajdlaHN

Yeah but even with managed database services you don't know if your provider has invested into proper testing of their recovery so you have to test it anyway. Major services like DigitalOcean have been known to shit the bed with your backups. If you don't test your backup recovery, you don't know if you're screwed even if you're paying for "managed" services. I test my backup recovery several times a month by actually baking into our CI/CD workflow under certain conditions. The entire production database gets restored from backup every week.

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throwaway063_1HN

What about a hybrid approach? You could use a managed db service as a live replica dedicated as a backup only. The queries would go to your local database on beefy hardware, while the replica would just have to be powerful enough to keep up with the WAL stream.

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yobboHN

Yes, but a complete hardware mirror is only 2x the original cap. investment. If bandwidth allows, you could even have local mirror in your office.

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