Exchange Systems & Operations
Deployment
The deployment schedules for different components vary and may change without notice.
| API | Schedule |
|---|---|
| FIX | Monday, Thursday at 2PM ET |
| WebSocket | Monday, Wednesday, Thursday at 2PM ET |
| REST | Monday, Wednesday, Thursday at 2PM ET |
Availability Zones
The infrastructure for the US Spot Exchange is hosted in US-EAST-1 (AWS) within multiple availability zones.
caution
The following information is subject to change without notification, and there is no guarantee that it will remain static over time.
| Product | Availability Zone ID |
|---|---|
| FIX Order Gateways | use1-az4 |
| Order Entry Gateway | use1-az4 |
| Trade Engine | use1-az4 |
| Web Socket Market Data | use1-az4 (use1-az6) (use1-az1) (use1-az5) |
| FIX Market Data | use1-az4 |
System Components
REST Entry Gateways
- Requests are routed through Cloudflare.
- Requests are processed on a FIFO basis with no queuing.
- REST requires additional authentication because it's stateless (as opposed to FIX order gateways, which authenticate during login).
FIX Order Gateways
- Each instance contains a per-user product based queue.
- Each per-user product-based queue can hold a maximum of 50 queued requests before requests are rejected.
- Each per-user product-based queue is processed on a FIFO basis.
Order Entry Gateway (Risk System)
- Each instance processes requests from FIX Order Gateways and REST in real time with no queuing.
- System performs real-time risk checks and account collateralization.
Trade Engine
- Clustered service that guarantees FIFO sequencing at a product level.
- Processes all requests from Order Entry Gateway.
- Publishes market data to WebSocket / FIX Market Data.
Market Data (Websocket & FIX)
- Each instance can process all market data requests across all products.
- Messages are distributed to customers randomly, and there is no intended benefit to being “first to subscribe”.