/tags/versioning/Recent content in Versioning on Momo Engineering Journal/images/og-image.png/images/og-image.pngHugoen-usWed, 28 Oct 2026 17:47:15 -0600/posts/056-s3-versioning-on-cas/Sun, 11 Oct 2026 08:56:13 +0000/posts/056-s3-versioning-on-cas/Why S3 versioning and content-addressed storage seem to conflict — mutation identity vs content identity — and how momo keeps both: UUIDv4 version records pointing at deduplicated blobs, delete markers that shadow without deleting, and pagination that can only be computed after sorting. Teaches: the real semantics backup tools depend on, and where the version chain deliberately stops being distributed.