Unchained Commerce

We just shipped a revamped docs site for Unchained Engine. Offline search, styled code blocks, dark mode and a brand-new AI Integration section covering our MCP server, Admin Copilot, and llms.txt support. Plus we're AI-crawlable by design. docs.unchained.shop

When a SaaS platform charges per transaction, where does the real pain hit first: margins, feature velocity, or customer churn?

Mix them wrong and you end up calling a payment plugin from Fastify middleware, or wrapping HTTP logic in a commerce adapter. Your code becomes untraceable. Keep concerns vertical: HTTP at the edge, business logic in the middle, data at the bottom.

Unchained plugins (Director/Adapter pattern) handle commerce logic: payment gateways, pricing rules, delivery providers. Fastify plugins handle HTTP concerns: logging, auth middleware, request parsing. They're orthogonal layers.

Owning your e-commerce stack means you can run a local LLM for product recommendations without shipping user data to OpenAI. Self-hosted, sovereign, profitable. That's the real win of open source i... github.com/unchainedshop/…

Migrating from a monolith? Don't fetch the entire product catalog upfront. Use GraphQL pagination with cursor-based filtering in your storefront resolver. Request only what the user sees, resolve p... github.com/unchainedshop/…

Add-to-cart mutations that check `orderId` first, then auto-login as guest if missing. One GraphQL call handles both auth and inventory. Clean separation of concerns: the hook knows cart state, the...

When building a headless storefront, where should filtering logic live: backend resolvers, frontend state, or both?

Composable commerce is trending, but most platforms still make you rip out half the engine to swap one provider. Real composability means swapping payment gateways without touching order logic. That's the plugin architecture difference.

This is why headless wins for scale. You own the logic, not the platform. Build once, adapt forever. That's worth the initial investment.

Headless changes the game. Your pricing engine becomes code, not UI forms. Need customer-specific rules? Plugin it. Volume discounts? Layer it. Tax logic varies by region? Compose it. Change strategy without redeploying.

You're migrating from Shopify. Everything works until you hit B2B: one customer needs 40% off, another gets tiered pricing at volume 10+. Shopify's pricing is baked in. You're stuck.

GraphQL resolvers should never trigger cascading queries. Use DataLoader to batch MongoDB lookups. One resolver requests 100 products? One database call, not 100. This is where headless architecture either scales or collapses. Get the data loading pattern right first.

The sweet spot: denormalize strategically. Product catalog lives in one collection with embedded variants. Pricing rules reference by ID, not embedded. Inventory per warehouse in a separate collection with a compound index on (productId, warehouseId). Queries become predictable.

v4.6.0 landed. Plugin system got leaner, query performance improved, and the API surface is cleaner. If you're running Unchained Engine in production, this one's worth the upgrade cycle. github.com/unchainedshop/…

Contributing to open source as a junior dev is the fastest way to level up. Real code review, real problems, real stakes. Way better than another tutorial. Find a project that frustrates you, fix it, learn 10x faster. #opensource

GraphQL subscriptions for real-time inventory updates beat polling every time. Your frontend stays in sync, your database stays sane, and you only pay for changes that actually matter. Worth the setup.

Most SaaS e-commerce platforms charge you a percentage of revenue. They're betting you'll succeed. Then they take a cut. It's perverse incentive design—your growth is their payday. Self-hosted changes that equation entirely.

wow

🚀 Big news! Deploy Unchained Engine with one click on Railway App, then eject to your own GitHub repo when ready. Build your e-commerce project your way - start simple, scale on your terms. Available now! docs.unchained.shop/src/docs/quick…