Tag: replication

All the articles with the tag "replication".

• How celld Actually Achieves RPO Zero

  Published: 15 Sep, 2026 |  at  11:00 AM

  celld claims a recovery point objective of zero against single-node failure — no acknowledged write is lost as long as the node holding it doesn't disappear before the bucket catches up. The mechanism isn't 'wait for S3 on every write.' It's closer to synchronous peer replication, with the bucket as backstop. Here's the actual write path, in full.