[CASSANDRA-48] test-and-set

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Won't Fix
• Component/s: Feature/Lightweight Transactions
• Labels: LWT
• Assignee: Unassigned
• Reporter: Jonathan Ellis
• Created: 02/Apr/09 22:55
• Updated: 25/Oct/19 13:11
• Resolved: 15/Jun/09 15:23

Description

Atomic test-and-set insert operation would be nice: "set value to X but only if the current value is still Y." This allows a sort of optimistic consistency: perform a GET, then perform test-and-set with the value of that GET as Y.

I do not think that this requires strong consistency to be useful.