edumatcher 0.13.4

Educational multi-process trading system with order matching

EduMatcher

Learn how real trading systems work. Build it from first principles.

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EduMatcher is an educational trading system that teaches market microstructure, matching logic, and exchange architecture through runnable code.

Why EduMatcher?

• Real exchange mechanics: order books, auctions, clearing, and risk controls
• Multi-process architecture: gateway, engine, audit, clearing, stats, and tooling
• Performance-aware implementation: ~80,000 orders/second with microsecond latency on a Linux server
• Practical protocol design: ALF (ALmost Fix) command language for gateway order entry, RALF (Reconciliation ALF) for post trade consumers and CALF (Channel ALF) to serve market data to subscribers, and finally BALF (Binary ALF) for high performance trade clients
• Strong engineering discipline: type hints, linting, and high test coverage

Key Features

• Complete lifecycle: order entry, matching, clearing, and audit trail
• Rich order support: MARKET, LIMIT, STOP, STOP_LIMIT, IOC/FOK, ICEBERG, combo, OCO
• Market mechanisms: opening/closing auctions
• Risk handling with circuit breakers and price collars
• Message-based process boundaries with strong observability
• Implement real risk controls such as prioce-collar, kill-switch, circuit-breaker, and mass-cancel
• Easy to understand configuration through single source engine_config.yaml which acts as the system reference data. To simplify its creation a CLI tool pm-config-gen can be used and a handwritten config file can be verified with pm-cverifier

Key Functional Limitations

• No spread-order books
• No implied (synthetic) orders

Key Infrastructure Limitations

• No primary-secondary automatic site failover
• No load balancing
• Limited replay for participants that lose the connection

Documentation

Main documentation site EduMatcher Documentation that among other things includes:

• How an Exchange Works: a primer on exchange mechanics and market microstructure concepts aimed at software developers with no prior financial experience
• Exchange Concepts: deep dive in core technical concept of an exchange
• User Guide: step-by-step instructions for installation, configuration, and running EduMatcher
• Training Material: self-paced exercises to learn how to setup and manage the Exchange
• Architecture: an overview of the SW architecture
• Developer Guide: deep dive into the architecture, design decisions, and code structure. Necessary reading for anyone wanting to contribute!
• Glossary: the finance world uses lot of specialized terms, this glossary lists the most important with an explanation

Installing

See User Guide: Installation

Note: Running an exchange is an inherent complex task and unfortunately it is only so much that can be simplified. However, going throught the user guide and training material should give a great start!

Performance

EduMatcher does not aim to match venues like NYSE or LSE, but it is still fairly fast for a purely Python educational project. The figures below reflect the performance on an high end Linux server with risk checks enabled (price collar and circuit-breaker).

Latency (engine-only, n=1,000 each)

Order type	min (µs)	median (µs)	P80 (µs)	P90 (µs)	max (µs)
Limit	13.1	15.0	15.4	15.7	155.7
Market	12.1	13.9	15.2	15.7	73.6

Throughput

Metric	Value
Max TPS	~81,000 orders/second
µs / order (mean)	12.4 µs
Order mix	20% Market, 30% aggressive Limit, 50% passive Limit

Performance note: price-collar and circuit-breaker checks run in the hot path for every match. They are required for realistic risk control and add measurable cost.

Citation

If you use this tool in teaching or courses, please cite:

@software{edumatcher,
  title = {EduMatcher},
  author = {Johan Persson},
  year = {2026},
  url = {https://github.com/johan162/EduMatcher},
  version = {0.13.4}
}

License

MIT License - see LICENSE.