Efficient Batch Scanning by Key Prefix (e.g., for Time-Series / Message Queue Data)

[l-7-l]

In a message queue, keys are like {{shard/segment}}_{timestamp}_{{message_status?}}_{ulid}. Is there an way to batch-scan all keys with a given time?

[JoshuaChi]

Thanks for the use case.
To clarify the current state: d-engine doesn't support prefix/range scan for batch reads yet.
We do have #300 (Prefix Watch) in planning, which addresses prefix matching on the watch/event side, so it will partially help — for example, monitoring key changes under a namespace. However, it won't cover your batch read use case (one-shot scan of all keys matching a prefix).
That's a separate capability closer to a range scan. It's already on our roadmap for v0.3.x as part of making d-engine a lightweight KV store. You can track the overall direction here: #281