Move data using your terminal or agent. Fast & open source.
Filament is a data replication engine written in Go. It supports full loads, incremental replication, and change data capture (CDC). As data moves through the engine, Filament verifies Arrow batches at the sink handoff and, where the sink supports it, checks the exact serialized payload. You can run Filament as a standalone binary or embed it in a Go application.
Checksumming the Arrow batch and recomputing it at the sink is a good answer to the quiet failure in pipelines, where rows arrive but not quite as they left. Advancing checkpoints only after the destination commits makes replays safer too. How do you handle a schema change mid CDC stream, like a column type change on the source, without breaking verification or forcing a full reload?
About Filament by Galaxy on Product Hunt
“Move data using your terminal or agent. Fast & open source.”
Filament by Galaxy launched on Product Hunt on November 13th, 2026 and earned 294 upvotes and 66 comments, earning #2 Product of the Day. Filament is a data replication engine written in Go. It supports full loads, incremental replication, and change data capture (CDC). As data moves through the engine, Filament verifies Arrow batches at the sink handoff and, where the sink supports it, checks the exact serialized payload. You can run Filament as a standalone binary or embed it in a Go application.
On the analytics side, Filament by Galaxy competes within Open Source, Developer Tools and Data — topics that collectively have 594.6k followers on Product Hunt. The dashboard above tracks how Filament by Galaxy performed against the three products that launched closest to it on the same day.
Who hunted Filament by Galaxy?
Filament by Galaxy was hunted by fmerian. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Filament by Galaxy including community comment highlights and product details, visit the product overview.
fmerian
Checksumming the Arrow batch and recomputing it at the sink is a good answer to the quiet failure in pipelines, where rows arrive but not quite as they left. Advancing checkpoints only after the destination commits makes replays safer too. How do you handle a schema change mid CDC stream, like a column type change on the source, without breaking verification or forcing a full reload?