REGISTRY RULES • MUTEX LOCKS

Preventing helper booking collisions through automatic status locking.

Verify how the selection engine coordinates physical meeting slots, records selection flags, and locks profile availability to prevent multiple families booking the same helper.

Concurrency Sandbox

Interactive Mutex Locking Sandbox

Simulate booking selection, lock profile registry states, test double-booking prevention, and trigger release schedules.

Selection Control Center

Offline Selection & Digital Lock Dashboard

Security Lock Guard
Physical Verification Lock Rules:

Once meetings are completed offline, the customer communicates their selection choice to the admin. The admin verifies helper availability to rule out parallel lock conflicts, and locks the selection. Locking immediately removes the helper from discovery registers.

Stage 1 — Meeting Candidates
1042
Profile HS-1042Filipino · Age 28
140 OMRMet
2059
Profile HS-2059Ethiopian · Age 31
120 OMRMet
Offline Status:

Both helpers were presented face-to-face. Interview logs marked completed in Stage 2.

Stage 2 — Manual Select Log
Customer met candidates at Muscat Agency office.
Customer verified sponsorship transfer eligibility.
Customer confirmed selection of Profile HS-1042.
Decision recorded by Operator OP-04.

Important: Invoicing is only generated post-selection. This workflow ensures no registration or catalog browse fees are billed.

Stage 3 — Digital Lock Setup
Chosen Candidate:Profile HS-1042
Availability Query:Unverified
Stage 1: Mutual Exclusion Lock

Concurrency Prevention & Registry Mutex Controls

To maintain database integrity, a custom concurrency check locks a helper's profile status as soon as an operator confirms a physical meeting scheduling request. The profile is set to **"Locked"** in the index, preventing other search queries or shortlists from selecting the same record during the coordination window.

Profile Registry FieldLocking State
Active Shortlists:Disabled (Mutex Locked)
Meeting Schedule status:Coordinating (24h Limit)
Concurrent Bookings:Blocked (Conflict Excluded)
Stage 2: Physical Meetings

Mediated Meeting Verification & Outcome Logging

Following the physical interview, the administrator updates the case profile to determine the next workflow branch. The system records decisions deterministically:

Selected

Selected (Approved Case)

Changes helper status to Selected, transition lock status to permanent, and triggers checkout invoice generation.

Released

Rejected (Reset Registry)

Resets helper profile back to Active draft status, releasing the concurrency lock for other shortlists.

Configured

Lock Release Schedule

Auto-releases locks if meetings are cancelled or if coordination logs exceed the 24-hour expiration threshold.

System MechanicsMutex Limits
Mutex locks resolve race conditions in parallel requests.
Automated release cron scripts monitor lock expirations.
Audit verification logs track locking lifecycle histories.
Stage 3: Operational Integrity

Deterministic Hiring Actions without Auto-Hire Overreach

The platform is designed to record manual coordination steps rather than automate hiring. Selecting "Selected" locks the candidate and releases invoicing, but the ultimate transfer of sponsorship, visa coordination, and helper travel are managed offline outside platform control, keeping workflows legally compliant.

Scope Reminders

The platform facilitates selection locking and calendar status coordination only. It does not provide mobile chat or scheduling dashboards for helpers, track daily attendance, calculate monthly helper wages, or manage post-transfer legal relationships.

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