Read Model Architecture¶

Executive Summary¶

Read Model Architecture defines query-optimized projections for Algosure. Read models support mobile, web, workflow, reporting, search, and cross-domain views without becoming source-of-truth owners.

Why This Exists¶

Algosure needs efficient views across Domains, but direct cross-module database reads would violate DDD ownership. Read models allow consumers to read useful views while source Domains keep operational ownership.

Owner¶

The owner is the Chief Product Officer and Enterprise Architect.

Business Value¶

Read models improve user experience, API performance, and reporting while keeping source facts protected by their owning Domains.

Read Model Flow¶

flowchart LR
    Source[Source Domain]
    Event[Domain Event]
    Projection[Projection Builder]
    ReadModel[(Read Model)]
    API[Query API]
    Client[Mobile / Web / Internal Consumer]

    Source --> Event
    Event --> Projection
    Projection --> ReadModel
    ReadModel --> API
    API --> Client

Read Model Types¶

Read Model Type	Purpose
Domain read model	Query view owned by a single Domain for its own APIs and workflows.
Cross-domain read model	Governed projection combining facts from multiple Domains without owning source facts.
Workflow read model	Process-oriented view for tasks, approvals, status, exceptions, and deadlines.
Mobile read model	Compact, network-efficient view optimized for mobile experiences.
Executive read model	Summary view for CEO, leadership, Board Room, and decision workflows.
Analytics projection	Reporting or KPI-oriented projection owned by Analytics.

Read Model Rules¶

Rule	Requirement
Source facts stay with Domains	Read models do not become authoritative operational records.
Rebuildable where practical	Read models should be rebuildable from source facts, events, or approved extracts.
Tenant context is mandatory	Read models must preserve TenantId and OrganizationId where applicable.
Projection ownership is explicit	Each read model has an owning Domain, workflow, or Analytics owner.
Staleness is visible	Consumers should understand whether read models are current, delayed, or eventually consistent.
Security applies to reads	Read models must enforce tenant, organization, role, permission, entitlement, and data classification rules.

Non-Implementation Boundary¶

This document does not define read model tables, materialized view syntax, caching strategy, projection code, or synchronization schedules.