How We Survive Festival On-Sales

Every ticketing vendor whispers "we scale" — 4 Circles would rather point at the knobs we actually turn. Under the hood sits a familiar, boring-by-design stack: MySQL for transactional truth, queue workers for housekeeping, and elastic cloud capacity for crush-time traffic.

Why that matters on drop day

• Accurate inventory — reservation release jobs reclaim abandoned carts, so GA never reads "sold out" while seats still exist.

• Multi-organizer reality — order models keep finance exports aligned with the live checkout ledger when a cart spans sellers.

• Retry-safe checkout — idempotent mixed-checkout contracts tame the double-tap panic when venue Wi-Fi flickers.

• Elastic capacity — on-sale mornings spin up extra workers automatically; quiet weeks scale back so you don't pay for idle servers.

What we're building next

Edge waiting rooms, traffic shaping, and other festival-grade admission tools are on the roadmap. We'd rather under-promise in sales decks and over-deliver in production than the other way around.

The narrative landing page lives at Built for scale; pair it with security defaults before you brief investors. Got a marquee on-sale? Talk to our engineering team.