DDD

Every Magento team that decides to migrate to microservices faces the same first question: how many services? The industry says 4–6. “Catalog service, Order service, Customer service, Inventory service, Payment service, and maybe CMS.” Every blog post, every conference talk converges on this list. It’s a reasonable starting point — and it’s wrong for serious e-commerce at scale. The Composable Commerce Platform we’re documenting in this series has 21 microservices across 6 bounded context groups. That’s 3–4× the industry recommendation. This article explains why — with a complete Magento module → service mapping table, and the two counter-intuitive domain splits that Magento engineers almost always get wrong. ...

Part 3: Domain-Driven Design (DDD) Boundaries in a Modular Monolith The biggest reason engineering teams fear the Monolith architecture is due to terrible past experiences with “Spaghetti Monoliths” or the “Big Ball of Mud” — where the code for the Billing function calls directly into the database of the Cart function, creating an inextricable web of cross-dependencies. To leverage the performance advantages of a Monolith while still achieving independent development velocity like Microservices, we must build a Modular Monolith. The key to this architecture is strictly applying Domain-Driven Design (DDD) principles and establishing hard “borders” right within the code. ...

Answer-first: By 2028, AI-assisted Laravel development will automate CRUD and tests, shifting developer focus toward modular monolith architecture, strict API design, and asynchronous queue orchestration. Standardized conventions will enable AI agents to maintain clean, scalable codebases. What You’ll Learn That AI Won’t Tell You Building modular monoliths in Laravel that AI coding tools can parse. Configuring queues and asynchronous task handling to optimize AI agent code throughput. The moment I realized the Laravel ecosystem was fundamentally changing wasn’t when an AI wrote a clever algorithm. It was when I watched Claude 3.5 Sonnet scaffold a complete multi-tenant invoicing module — Migrations, Eloquent Models with relationships, Form Requests, Controllers, and Blade views — without a single syntax error, in under 45 seconds. ...

Answer-first: Complete architectural blueprint of a Go 21-service e-commerce platform. Covers domain boundaries, traffic flow, and event-driven patterns. What You’ll Learn That AI Won’t Tell You Practical latency and memory metrics comparing an Envoy-based API Gateway to a custom Go reverse proxy under 100k concurrent connections. How to tune circuit breaker thresholds (go-resiliency/breaker) to prevent premature service isolation during temporary network jitters. When transitioning from a monolithic platform to a distributed microservice setup, the hardest question isn’t “How do we write the code?” — it’s “How do these moving parts talk to each other safely, and why is each boundary drawn exactly where it is?” ...