Add limited registration stock / capacity tracking#39
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p0lar-bear merged 7 commits intoproductionfrom Apr 25, 2026
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Adds per-PriceLevel capacity limits with atomic counter-based tracking: - New PriceLevel fields: maxCapacity, remainingSlots, reservedSlots, capacityDisplayThreshold - Slot reservation at checkout (PENDING), confirmation on payment success, release on failure/refund - Capacity checks use select_for_update() to prevent overselling - update_capacity_for_status_change() hooks into all payment/webhook status transitions - Frontend displays remaining slots and sold-out state - Management commands: expire_pending_orders, verify_capacity_counters - Tests: capacity unit tests, concurrency stress tests, benchmarks
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This branch just needs to be rebased against prod, and we need to make sure that the changes made to ordering.py and payments.py work for paypal's flow since they were made before we finished that branch. I've been bedridden all week so I haven't been able to do it myself. |
p0lar-bear
added
type:enhancement
…e, fixing CI tests.
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@p0lar-bear Can you perform a review? |
p0lar-bear
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Apr 25, 2026
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Needed to add calls to update_capacity_for_status_changes() to the PayPal-specific stuff in paypal_payments.py and paypal_webhook_handlers.py. Local tests passed.
p0lar-bear
approved these changes
Apr 25, 2026
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Adds per-PriceLevel capacity limits with atomic counter-based tracking: