Event-sourced domain design
Aggregates, commands, and events modelled for the business language so the stream reads like the real story.
Event-sourced & CQRS systems
Event-sourced architectures with complete audit trails and maintainable projections: aggregates and evolution rules that stay runnable years in, not conference samples that collapse under real schema change.
Founder-led. Fixed scope. Ownership left with your team.
The Problem We Solve
Event sourcing and CQRS are easy to over-apply and hard to operate poorly. Without clear aggregates, intentional projections, and evolution strategy, streams become unread, read models drift, and disputes cannot be resolved from the source of truth. We design domain streams and query-side models the business can still follow.
Who This Is For
- Products that need immutable history, auditability, or time-oriented analytics.
- Teams where CRUD models lose the reason behind state changes.
- Groups that tried event sourcing from samples and now face streams nobody can follow.
What We Deliver
Production-oriented event and query design, not framework demos.
CQRS query-side models
Projections tailored to operational and analytic queries, with clean write-side boundaries.
Audit and history queries
Full history for compliance and "what changed when" without bolt-on logging nobody trusts.
Evolution and operations
Versioning, replay strategy, and operational hygiene so the stream remains an asset.
How We Work
Production-oriented patterns next to recovery work when a system needs a real domain backbone. Week one: map write paths, existing audit mechanisms, and the questions the business actually asks of the data. Then implement aggregates and projections with ownership left on your team.
What You Leave With
- A domain model that explains every state transition.
- Read paths that match how the business asks questions.
- Auditability in the source of truth, with a documented evolution and replay strategy.
Discuss your event-sourced system
Share the state of your event store or CQRS implementation and where it hurts. We reply with a direct technical read. Free, no obligation.
Or email info@mayordomo.co.uk with a short outline.