Fly.io ships SBD to replace JuiceFS for Sprites
What happened
On October 22, 2026, Hacker News reported that Fly.io launched Sprites Block Device (SBD) for Sprites, replacing the existing JuiceFS filesystem. SBD presents an object storage bucket as a block device over NBD, with an sbd serve daemon handling reads and writes. Metadata and data blocks sit in the same object storage bucket, so no separate database is needed to keep them in sync. The change covers how storage is presented, how reads and writes are handled, and where metadata lives.
Written by AI from the coverage · updated 2 hours ago
Coverage
Follow the reports to see the story from different sides.
- Hacker News front pageSBD: We Have a Filesystem at Home
Fly.io 为 Sprites 推出 Sprites Block Device（SBD），通过 NBD 把对象存储桶呈现为块设备，由 sbd serve 守护进程处理读写，元数据与数据块同存桶中，不再需要单独数据库同步。
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