CEX | Centralized Exchange

Production-oriented centralized exchange backend built in Rust.

Current Status

Currently building the foundation layer:

• Rust workspace architecture
• Actix Web API
• SQLx integration
• PostgreSQL migrations
• structured logging
• CI/CD workflows
• verification tooling
• developer automation

---

Planned Architecture

graph TD
    Client((Client))

    Gateway[API Gateway]
    Auth[Auth Service]
    Order[Order Service]
    Risk[Risk Engine]
    Match[Matching Engine]
    Balance[Balance Service]
    Wallet[Wallet Service]
    WS[WS Gateway]

    Kafka{Kafka / NATS}
    Redis[(Redis)]
    PG[(Postgres)]

    Client --> Gateway

    Gateway --> Auth
    Gateway --> Order
    Gateway --> Balance
    Gateway --> Wallet
    Gateway --> WS

    Order --> Risk
    Order --> Kafka

    Kafka --> Match
    Match --> Kafka

    Kafka --> Wallet
    Kafka --> Balance
    Kafka --> WS

    Wallet --> PG
    Balance --> PG
    Order --> PG
    Auth --> PG

    Balance --> Redis
    Match --> Redis

Loading

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Roadmap

Phase	Focus
P0	Workspace, tooling, SQLx, migrations
P1	Authentication + user system
P2	Balance + ledger engine
P3	Matching engine + orderbook
P4	Trade settlement
P5	Redis integration
P6	WebSocket infrastructure
P7	Service separation
P8	Event-driven architecture
P9	Risk engine
P10	Production hardening

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Stack

Backend

• Rust
• Tokio
• Actix Web
• SQLx
• Tracing

Database

• PostgreSQL

Infrastructure

• Redis
• Kafka / NATS

Observability

• Prometheus
• Grafana
• Loki
• Jaeger

Deployment

• Docker
• Kubernetes
• GitHub Actions

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Repository Structure

cex/
├── apps/
│   └── api/
│
├── crates/
│   ├── config/
│   ├── db/
│   ├── errors/
│   └── types/
│
├── migrations/
├── scripts/
├── docker/
└── .github/

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Setup

Initialize Repository

make setup

Start Infrastructure

docker compose up -d

Run Migrations

make migrate

Run API

make run

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Verification

Auto Fixes

make fix

Full Verification

make verify

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Standards

Repository checks include:

• formatting
• clippy
• tests
• dependency audits
• license checks
• git hooks
• CI verification