OpenBucket — Implementation White Paper
OpenBucket implementation white paper — how the single-container, single-process, S3-compatible object store is built, section by section.
. Backend Architecture & Bootstrap
OpenBucket backend architecture — how a single NestJS process boots and multiplexes S3, admin API, and SPA traffic onto one port.
. S3 Wire Protocol & SigV4 Authentication
How OpenBucket implements the Amazon S3 wire protocol and AWS Signature V4 auth — request routing, XML parsing, error envelopes, and every S3 operation.
. Persistence & Storage Layer
OpenBucket's persistence layer — a SQLite metadata store and a path-mirrored filesystem blob store kept consistent with atomic, crash-safe writes.
. Streaming I/O, Concurrency & Background Work
OpenBucket streaming I/O and concurrency — the byte plumbing for S3 PUT/GET/Range/multipart plus the in-process scheduler for background work.
. Admin API, Frontend, Auth Flow & Delivery
OpenBucket's admin JSON API, Angular admin console, JWT auth flow, and the build pipeline that ships both in a single Docker image.