RegistrationLimitConstraint may fail to validate concurrent requests

Open on Drupal.org →

Created on 1 June 2025, about 2 months ago

Problem/Motivation

It's possible for duplicate event registrations to occur if concurrent requests are sent to the system. If multiple requests to create or update an event registration for the same event are processed in parallel, the validation may not accurately check the current status of registrations for a particular user or event.

Proposed resolution

Force the validation to acquire a lock before checking the users registration status so only one request can be processed at a time.

🐛 Bug report

Status

Active

Version

2.0

Component

Code

Created by

🇺🇸United States pixelwhip

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Merge Requests

!13RegistrationLimitConstraint may fail to validate concurrent requests
Open
🇺🇸United States pixelwhip
updated about 1 month ago

Comments & Activities

Issue created by @pixelwhip
Merge request !13Issue #3527798 by pixelwhip: RegistrationLimitConstraint may fail to validate concurrent requests → (Open) created by pixelwhip
Comment about 2 months ago →
System Message

attheshow → committed 4a137fc8 on 2.0.x
Issue #3527798 by pixelwhip: RegistrationLimitConstraint may fail to...
Comment about 2 months ago →
🇺🇸United States attheshow
Comment about 1 month ago →
System Message
Automatically closed - issue fixed for 2 weeks with no activity.
Comment about 1 month ago →
🇺🇸United States pixelwhip
This issue was committed then reverted due to the missing service. I'm reopening it with an updated merge request that includes the omitted lock service.

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