🎟️ Events, Ticketing & Creators · C4 Architecture · Pro
Concert Ticketing Platform
A ticketing platform built for big on-sales: a virtual waiting room, seat holds, anti-bot checks, payments and mobile tickets with rotating QR codes.
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Drawing diagram…
What this diagram shows
- A virtual queue protects the site when sales open
- Seat holds stop two fans buying the same seat
- Rotating QR tickets make screenshots useless for resale
Prompt used
Concert ticketing: fans join a virtual waiting room when sales open and are let in at a controlled rate. The event catalogue service shows events and seat maps. The inventory service holds seats in Redis for 8 minutes. A bot-protection service scores traffic. The order service takes payment through a payment gateway and issues mobile tickets with rotating QR codes. Organisers manage events and see sales in an organiser dashboard.
Mermaid code
C4Container
title Concert Ticketing
Person(fan, "Fan", "Buys tickets")
Person(org, "Organiser", "Creates events")
System_Boundary(tk, "Ticketing Platform") {
Container(wr, "Virtual Waiting Room", "Edge service", "Queues fans at on-sale")
Container(cat, "Event Catalogue", "Node.js", "Events and seat maps")
Container(inv, "Inventory Service", "Go", "Seat holds and sales")
Container(bot, "Bot Protection", "Python", "Traffic scoring")
Container(ord, "Order Service", "Java", "Checkout and tickets")
Container(dash, "Organiser Dashboard", "React", "Events and sales")
ContainerDb(red, "Seat Holds", "Redis", "8-minute holds")
ContainerDb(db, "Orders DB", "PostgreSQL", "Orders and tickets")
}
System_Ext(pg, "Payment Gateway", "Cards, UPI")
Rel(fan, wr, "Joins queue")
Rel(wr, cat, "Lets fans in")
Rel(cat, inv, "Seat availability")
Rel(inv, red, "Holds seats")
Rel(wr, bot, "Scores traffic")
Rel(inv, ord, "Checkout")
Rel(ord, pg, "Payment")
Rel(ord, db, "Saves orders")
Rel(org, dash, "Uses")
Rel(dash, db, "Reads sales")Related templates
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