DeltaGlider
Store 4TB of build artifacts in 5GB
Details
- External ID
- 45898467
- Source
- HN
- Company
- —
- Product
- DeltaGlider
- Website domain
- github.com
- Launched
- Nov. 12, 2025
- Cohort
- —
- Upvotes
- 8
- Upvotes percentile
- 0.4421397379912664
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
DeltaGlider is a CLI/SDK similar to `aws s3` or `boto3`.UPLOAD: It stores the first file in a S3 path as a full-size (reference), but saves next uploaded archives as deltas (tiny binary diffs) with respect to the reference.DOWNLOAD: it reconstructs the original file on the fly, bit-perfect and verified with SHA256.Why Xdelta3? It's a compression-aware and block-level binary diff algorithm. Perfect for representing differences between archives, where small changes shift bytes but most content stays the same. It can efficiently delta compress ZIP/JAR/TAR archives up to 99.9% between versions, provided the difference in compressed content is overall small.Killer use cases Software versioning, periodic db. backups, JAR, ZIP, TGZ.The impact for us was "2 orders of magnitude" storage price reduction. I hope you can benefit from it too!License: GPLv3Feedback and contributions are super welcome!
Enrichment
- Theme
- lightweight and on-device AI runtimes
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- compression for build artifacts
- Manually corrected
- False
Could you build this?
Partial Wrapping S3 operations in a CLI is straightforward, but achieving high-ratio delta compression on compressed archives and ensuring bit-perfect streaming reconstruction requires specialized systems programming.
What it would actually take: Requires a systems language (e.g., Rust or Go) utilizing content-defined chunking (FastCDC) or archive-aware delta diffing (unpacking tar/gzip streams to compute deterministic diffs on internal files). The client must implement hash verification, delta graph resolution, and streaming reassembly directly against S3 object storage APIs with minimal memory overhead.
Discussion
2 comments analyzed.
Competitors mentioned: GitLab
Feature requests: S3 server instead of library, Integration with self-hosted GitLab for artifact management
Competitors
Other products that read as similar to this one — 42 launches clear the similarity bar, closest 8 shown.
Attention rank: #25 of 43 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Looks like the first mover among its competitors.
- go-binsync · hn · 2026-08-27 · 5 upvotes · similarity 0.41
- T4 · hn · 2026-04-12 · 7 upvotes · similarity 0.40
- Optimind compress and Archiver · ph · 2026-09-17 · 2 upvotes · similarity 0.38
- Diffing Binary Files · hn · 2026-08-05 · 19 upvotes · similarity 0.38
- An update-aware approach to incremental sorting (DeltaSort) · hn · 2026-01-04 · 6 upvotes · similarity 0.37
- An incremental build cache for Rust on GHA · hn · 2026-07-15 · 5 upvotes · similarity 0.36
- Zs3 · hn · 2025-12-29 · 42 upvotes · similarity 0.36
- dfsdk · github · 2026-09-11 · 7 upvotes · similarity 0.36
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a dev tools tool for Sales yet.