[CASSANDRA-5062] Support CAS - ASF JIRA

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Details

Type: New Feature
Status: Resolved
Priority: Normal
Resolution: Fixed
Fix Version/s: 2.0 beta 1
Component/s: Feature/Lightweight Transactions, Legacy/CQL
Labels:
- LWT

Description

"Strong" consistency is not enough to prevent race conditions. The classic example is user account creation: we want to ensure usernames are unique, so we only want to signal account creation success if nobody else has created the account yet. But naive read-then-write allows clients to race and both think they have a green light to create.

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half-baked commit 3.jpg
02/Mar/13 00:21
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Jonathan Ellis
half-baked commit 2.jpg
02/Mar/13 00:21
767 kB
Jonathan Ellis
half-baked commit 1.jpg
02/Mar/13 00:21
585 kB
Jonathan Ellis

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Assignee:: Jonathan Ellis

Reporter:: Jonathan Ellis

Authors:: Jonathan Ellis

Votes:: 5 Vote for this issue

Watchers:: 32 Start watching this issue

Dates

Created:: 13/Dec/12 15:24

Updated:: 25/Oct/19 13:11

Resolved:: 28/May/13 22:35