DDCR — Domain Driven-Centric Router Version 2.0 — The Essentials in 7 Lines Step | What to do Define a semantic URL — /domain/entity/action/target Extract context — path, method, headers, query Normalize action — map to canonical code (c, r, u, d, …) Validate entity — Route Guard whitelist Build routing key — deterministic positional string Resolve metadata — f(key) → value Bind dynamically — assign target URL at runtime Done. 7 steps. Runtime only. Zero redeploy. Zero proxy changes. Why it works Deterministic engine → same input = same output, always Immutable runtime logic → engine never changes Metadata-driven control plane → new backend = new entry Fail-fast security → no match = immediate rejection What is DDCR? Domain Driven-Centric Router (DDCR) is a deterministic runtime semantic resolution engine for distributed systems that enables metadata-driven routing based on business intent rather than infrastructure configuration. Unlike traditional routing approaches — where routing logic is embedded in proxies, policies, or service registries — DDCR enforces a strict separation: 👉 All routing intelligence lives in the runtime engine.👉 All variability lives in metadata. Routing is no longer configured.Routing is computed. What DDCR Solves Problem Traditional Approach DDCR Static Routing Hardcoded endpoints Metadata resolution Rule Explosion One rule per backend One engine, infinite entries Proxy Sprawl New proxy per vendor Single immutable proxy Security Gaps Partial validation Fail-fast whitelist DDCR Core Model DDCR is composed of: Component Role Semantic URL Expresses intent (domain/entity/action/target) Runtime Engine Executes deterministic 7-stage pipeline Metadata Store Passive control plane (KVM, Redis, etc.) Canonical Model Normalized action codes Routing Key Deterministic positional identifier Dynamic Binding Runtime target resolution Mathematical Model At its core, DDCR is defined as: f(k) → v Where: k = routing key = (entity, action, destination) v = resolved backend endpoint Extended form: f : (e, a, d) → endpoint Properties: Deterministic Total over registered domain Undefined → fail-fast 👉 Same input → same output → in any language, any platform Validated Results Validated across enterprise-scale distributed environments: 13 configurations 8 enterprise platforms 5 programming languages 42 IoT sensors · 4 environments ~2,067,904 requests processed 100% routing accuracy Zero routing failures Sub-4ms resolution latency 🌍 Simple Orientation DDCR means: 👉 Systems should route by meaning, not by configuration. Real-World Analogy What It Means GPS You say destination, not which road Airport You follow destination, not wiring Brain Input → decision → action That is DDCR. 📦 Composition of DDCR Component Role Engine Deterministic execution (7 stages) Metadata Control plane (human-governed) Key Schema Routing DNA Normalization Canonical action model Security Layer Fail-fast whitelist Architectural Positioning GDCR defines what enters DDCR defines how it resolves ODCP defines where it executes 📚 Version History Version Status DOI v2.0 ✅ CURRENT — Stable Release 10.5281/zenodo.18864832 v1.x ⚠️ Deprecated — 🔗 Links Repository: github.com/rhviana/deip DDCR (Zenodo): https://doi.org/10.5281/zenodo.18864832 DEIP (Source of Truth): https://doi.org/10.5281/zenodo.19004802 📖 Citation (v2.0) APA: Viana, R. L. H. (2026). Domain Driven-Centric Router (DDCR) — Version 2.0. Zenodo. https://doi.org/10.5281/zenodo.18864832 👤 Author Ricardo Luz Holanda VianaEnterprise Integration Architect | SAP BTP Integration Suite Expert | SAP Press Author
Luz Holanda Viana Ricardo (Wed,) studied this question.