Developer Ditches Managed Postgres for MicroVMs to Cut Costs and Gain Isolation

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A software developer switched from managed cloud database services to self-hosting PostgreSQL on a microVM after finding that managed bills were rising while most paid features went unused. MicroVMs, such as those powered by AWS's open-source Firecracker technology, boot their own kernel in under a second, offering hardware-level isolation similar to full virtual machines but with container-like speed. The developer used Krova Cloud's microVM platform to provision a private instance with no public IP, running Postgres on a dedicated kernel isolated from other workloads. Backups are handled via a simple daily cron job using pg_dump, uploading compressed files to object storage. The setup is recommended for side projects and small SaaS applications, but the developer cautions it is not suitable for mission-critical systems or teams requiring automatic failover.

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