ABADAR

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ABADAR models the core infrastructure of a modern electronic exchange through a deterministic price-time-priority matching engine and per-symbol workers.

Its ASP.NET Core backend combines PostgreSQL persistence, a transactional outbox, Kafka producers and consumers, idempotent projections, JWT authorization, SignalR updates, replay controls, and administration APIs.

A Next.js frontend provides authentication, user administration, profile editing, market history, simulation controls, event status, and projection replay tools.