SBE Domain Mapper (alpha)

Improve the productivity of teams using SBE, the high-performance binary encoding

Teams choose Simple-Binary-Encoding (SBE) for its exceptional performance, but using it optimally and safely requires experience. The Aeron team, which maintains the SBE reference implementation on Github, has incorporated their extensive knowledge into the SBE Domain Mapper. By embedding best practices into the SBE Domain Mapper, teams can reduce development time and operational risks, accelerating ROI and gaining a competitive advantage.

Introducing the SBE Domain Mapper

Discover the SBE Domain Mapper for Java, a new Aeron Premium productivity tool that turns Simple Binary Encoding (SBE) messages into high‑level domain events and method call, so you get all the performance of SBE without the complexity. Built by the Aeron team in collaboration with Adaptive, it bakes in hard‑earned best practices to help teams ship faster, safer, and with fewer bugs. Generate proxies and adapters that auto‑update as schemas evolve, protect against buffer overruns, enforce correct field ordering, and validate data at the source.

With a performance‑first design—including zero‑copy techniques like Aeron’s tryClaim API, you reduce boilerplate, avoid common pitfalls (flyweight misuse, schema breakages, truncated messages), and standardise coding style across projects while keeping a clean separation between infrastructure and business domain. If you’re on Aeron Premium, you can start using it today and move to production with confidence.

Alongside reducing the lines of code a team needs to maintain, the SBE Domain Mapper addresses several common issues, including:

• SBE field ordering: Ensures correct access order for variable-length fields and repeating groups, preventing message corruption and misinterpretation. [Find out more].
• Flyweight safety: Prevents accessing flyweight decoders beyond their data lifetime, avoiding incorrect data reads and potential system divergence.
• Truncated message attacks: Protects against buffer overrun exploits, ensuring safe use of SBE both internally and externally.
• Field validation: Ensures all field values adhere to the schema and SBE specification.
• Performant implementation: Leverages zero-copy Aeron APIs (e.g. “try claim”) to minimize copying overhead. [Find out more]
• Consistency across teams and projects: Facilitates standardized patterns across codebases.
• Rapid schema development: Automatically updates adapter and proxy code in response to schema changes.

Benefits of the SBE Domain Mapper

Increase your team’s velocity while keeping confidence in the results.

• Avoid costly effort: Minimize development time and maintenance costs.
• Mitigate security risks: Safeguard your application against vulnerabilities on public endpoints.
• Ensure service reliability: Prevent outages and maintain business continuity.
• Gain a competitive edge: Optimize performance while focusing on business logic.

Operational Considerations

• Availability: Available as an Aeron Premium feature.
• Alpha version: This is an alpha version. Find more information about our alpha, beta, and stable builds here.

Aeron SBE Domain Mapper for Java

For a detailed overview of the SBE Domain Mapper for Java, download the datasheet:

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   Jack Beezer Product Manager
   Adaptive | Aeron

   LinkedIn profile

   Jack is Product Manager for Aeron at Adaptive, leading the roadmap for Aeron Premium and Aeron Sequencer, powering low-latency, mission-critical trading systems across global capital markets.