InfraCordeX 
01 · Executive Overview
Zilara is a decoupled headless e-commerce architecture designed to deliver fast product catalog navigation, no platform transaction fees, and complete database sovereignty. The system combines an asynchronous Medusa.js v2 Node.js backend with an optimized Zoneless Angular Server-Side Rendered (SSR) storefront.
02 · The Problem & Engineering Constraints
Monolithic e-commerce platforms (such as Shopify and Magento) impose escalating per-transaction fees, rigid plugin ecosystems, and bloated client runtimes that degrade Core Web Vitals (INP, LCP). Businesses requiring multi-currency support, custom checkout workflows, and specialized inventory logic suffer from high operational costs and slow page hydration.
03 · Measurable Engineering Impact
0%
Platform Transaction Fee
Full Revenue & Data Sovereignty
Optimized FCP
First Contentful Paint
Isomorphic SSR Pre-Rendering
Typed request/response contracts
Typed Contract Coverage
End-to-End TypeScript Validation
04 · Technical Solution & Strategy
Architected a decoupled headless system separating transactional business logic from presentation. Implemented a Medusa.js v2 Node.js backend managing product catalogs, cart state, order workflows, and payment integrations against PostgreSQL. Built a Zoneless Angular SSR frontend styled with Tailwind CSS, utilizing Server-Side Rendering for early First Contentful Paint and search crawler indexing.
Medusa.js v2 Architecture
Decoupled headless commerce backend providing extensible order workflows and zero platform tax.
Zoneless SSR Storefront
Pre-rendered HTML structures optimizing First Contentful Paint and guaranteeing full crawlability.
Containerized CI/CD Pipeline
Dockerized microservice environment deployed on self-hosted Linux VPS via Coolify automation.
05 · Role & Core Contributions
Architected the headless system topology, RESTful API contracts, and PostgreSQL relational schema design.
Developed the Zoneless Angular SSR storefront with Angular Signals to eliminate Zone.js hydration latency.
Configured Medusa.js v2 workflow subscribers for transactional webhooks and inventory synchronization.
Orchestrated multi-container Docker deployment pipelines managed via Coolify on a Linux VPS node.
06 · System Architecture & Subsystems
The architecture comprises an Angular SSR presentation layer communicating over typed REST APIs with a decoupled Medusa.js v2 micro-service core. PostgreSQL handles transactional relational persistence while Redis manages transient cart caching and asynchronous task queuing.
Zoneless Angular SSR Storefront
Client & Crawler Presentation LayerServer-Side Rendered Angular frontend generating static HTML for optimal First Contentful Paint (FCP) and seamless hydration.
Medusa.js v2 Headless Commerce Engine
Transactional Backend & Order WorkflowDecoupled Node.js commerce core handling catalog management, customer authentication, tax calculations, and payment webhooks.
Containerized Infrastructure & Cache
Persistence, Caching & DeploymentIsolated Docker environment running PostgreSQL 16, Redis caching, and automated Coolify continuous delivery pipelines.
07 · Key Technical Decisions & Tradeoffs
Decoupled Medusa.js v2 Architecture vs Monolithic SaaS
Guarantees complete database ownership, zero recurring platform percentage fees, and unrestricted custom backend workflow logic.
Requires dedicated self-hosted DevOps maintenance (database replication, Redis caching, security patching).
Angular SSR with Zoneless Signals over Client-Only SPA
Ensures HTML pre-rendering for search engine crawlers and delivers fast initial render on mobile networks.
Increases server compute requirements during high-concurrency traffic bursts, requiring reverse proxy caching.
Redis-Backed Transient Cart State with Optimistic UI
Eliminates database write contention on rapid cart quantity updates through Redis caching.
Requires multi-tab synchronization logic to resolve race conditions across active browser windows.
08 · Deployment & Production Infrastructure
Deployed as an orchestrated multi-container Docker cluster (SSR Storefront, Medusa.js API, PostgreSQL 16, Redis) on a Linux VPS managed via Coolify. Traffic is routed through Nginx with TLS 1.3 termination and Cloudflare CDN caching.