File Storage / Object Gateway (Go, Boto3, PostgreSQL, Redis, Docker) overview

A multi-tenant object storage gateway that provides a unified API over heterogeneous storage backends with access control, quota management, and lifecycle policies. Go powers the gateway with high-concurrency request handling, streaming multipart uploads, and content-addressable deduplication. Boto3 interfaces with cloud object storage as the primary backend, while the gateway adds metadata enrichment, virus scanning hooks, and access token validation. PostgreSQL stores object metadata, bucket policies, quota usage, and access audit logs. Redis caches authentication tokens, presigned URL validations, and hot object metadata for frequently accessed files. Docker enables deployment as a stateless gateway tier behind a load balancer. The tradeoff is maintaining consistency between the metadata database and the underlying object store, and managing multipart upload lifecycle cleanup.