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Streambed

Stream Postgres to Iceberg on S3, Supports Postgres Wire

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HN · launched May 31, 2026 · 129 upvotes (top 6%) · 0 views

Niche: data and system migration tools · 62 launches, 6 in the last 7 days · Explore this niche →

Category and tags
  • Horizontal
  • Data infrastructure
  • B2B
  • Not AI
  • Commercial product

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More like this: all 62 launches in data and system migration tools →

Could you build this?

No Streaming PostgreSQL CDC data directly into Apache Iceberg tables while emulating the Postgres wire protocol requires deep database engine and distributed storage expertise.

What it would actually take: The architecture requires a custom storage engine and network server written in Rust, Go, or C++ implementing PostgreSQL wire protocol v3 and logical replication streaming (WAL decoding). It must manage Apache Iceberg metadata specifications—generating Parquet files, manifest lists, and atomic commit transactions on object storage like S3—while guaranteeing ACID semantics and handling schema evolution. This requires a dedicated team of distributed systems and database storage engine engineers.

Discussion

20 comments analyzed.

Competitors mentioned: Supabase ETL, Kuvasz-streamer, Sequin, DuckLake, SeaweedFS

Concerns raised: CDC reliability and flakiness with TOAST columns, WAL buildup risk when replication slots on primary, REPLICA IDENTITY FULL requirement for before/after values, Code quality concerns (vibe-coded), AI-generated responses from maintainer

Feature requests: Support for replication slots on replica instead of primary, Handle TOAST columns without REPLICA IDENTITY FULL by using object storage, MySQL/binlog support

Competitors

Other products that read as similar to this one : 244 launches clear the similarity bar, closest 8 shown.

Attention rank: #17 of 245 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 211 days after the earliest competitor.

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.