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Engineering & product playbooks
Hands-on playbooks, decision frameworks, and case studies from the team building AI-native products at CodeNicely.
Enforce Row-Level Tenancy in Postgres Without a Middleware Tax
A hands-on tutorial for backend engineers who want tenant isolation enforced at the database layer, not in application WHERE clauses. Includes the set_config trick that avoids the RLS performance penalty most teams blame on the feature itself.
How to Hire a Software Development Company in the UK
Shortlisting a software development partner for a UK build? The deciding factor isn't day rate or portfolio depth — it's whether the partner treats UK GDPR as an architectural constraint or a checkbox. Here's what to actually screen for.
5 Mistakes Teams Make When Embedding AI into a Lending Workflow
Most AI credit-scoring failures aren't model failures — they're pipeline and governance failures that surface three months after go-live. Here are the five mistakes we see NBFCs and digital lenders repeat, and what to do when your approvals stop making sense.
UPI Integration Cheatsheet for Backend Engineers
A dense reference for backend engineers integrating UPI: which flow to pick, how to handle the pending state without double-fulfilling orders, and which failure codes are actually terminal. Skip the Medium posts.
Top AI Product Studios in the US for Seed-Stage Startups
A practical vendor landscape for seed-stage US founders choosing an AI product studio. Real categories, honest tradeoffs, and what to demand on IP, docs, and handoff.
Your Data Migration Isn't Slow. Your Cutover Plan Is Wrong.
Every migration guide frames the cutover as a scheduling and risk question. It isn't. It's a data consistency question, and until you answer it, no strategy — big bang or phased — will survive contact with production.
Cut Over to a New Payment Provider Without Losing Orders
A step-by-step payment cutover strategy for engineering teams running a live switch between two gateways. Covers webhook fencing, dual-write routing, and the 30-day tail where the old provider keeps firing events your new code was never written to handle.
Questions to Ask Before Hiring an AI Development Partner
Portfolio decks and discovery calls will not tell you which AI vendor has actually shipped a production system. These 17 questions will — and the difference between a good answer and a red flag is often a single sentence.
Synchronous API vs. Async Queue: Pick One and Commit
Retrofitting queues onto slow endpoints one at a time creates a hybrid mess. Here's the real decision rule: who owns the failure, the caller or the callee?
5 Mistakes Teams Make When Migrating from Monolith to Microservices
Most monolith to microservices migration guides describe the happy path. This is the other one: the five failure modes that show up after the first two services are live and the shared database is still lying to you.
Idempotent Webhook Consumers: A Step-by-Step Guide
A hands-on walkthrough for building webhook handlers that survive provider retries without double-charging or double-shipping. Real Postgres schema, real Node code, and the race condition most tutorials miss.
Stripe vs. Razorpay vs. Cashfree: Pick One Before You Migrate
Choosing between Stripe, Razorpay, and Cashfree is a settlement architecture decision, not a pricing one. Here's how to pick before you spend a quarter migrating the wrong direction.