--- title: "Engineering Insights — the ERPStack blog" description: "Engineering Insights is the ERPStack blog: long-form engineering articles on custom ERP architecture, Next.js at enterprise scale, multi-tenant isolation in PostgreSQL, edge performance on Vercel, React Server Components, and the HIPAA and GDPR obligations that shape regulated builds." canonical: "https://erpstack.io/blog" markdown_url: "https://erpstack.io/blog.md" author: "Vivek Mishra" articles: "20" --- # Engineering Insights — the ERPStack blog > **In short:** Engineering Insights is the ERPStack blog: long-form engineering articles on custom ERP architecture, Next.js at enterprise scale, multi-tenant isolation in PostgreSQL, edge performance on Vercel, React Server Components, and the HIPAA and GDPR obligations that shape regulated builds. ## Clusters - [architecture](https://erpstack.io/blog/category/architecture) — markdown at https://erpstack.io/blog/category/architecture.md - [compliance](https://erpstack.io/blog/category/compliance) — markdown at https://erpstack.io/blog/category/compliance.md - [erp](https://erpstack.io/blog/category/erp) — markdown at https://erpstack.io/blog/category/erp.md - [nextjs](https://erpstack.io/blog/category/nextjs) — markdown at https://erpstack.io/blog/category/nextjs.md - [performance](https://erpstack.io/blog/category/performance) — markdown at https://erpstack.io/blog/category/performance.md ## All articles (20) ### The Architecture That Got You to 1k Users Will Kill You at 100k Users - URL: https://erpstack.io/blog/20-scaling-nextjs-b2b-saas-boilerplate-2026 - Markdown: https://erpstack.io/blog/20-scaling-nextjs-b2b-saas-boilerplate-2026.md - Published: 2026-06-03 · Last reviewed: 2026-06-03 · 1502 words - Cluster: nextjs (https://erpstack.io/blog/category/nextjs) The architecture that carries you to 1,000 users is the one that fails at 100,000. Connection pooling, cache invalidation and tenancy under load. ### SEO is Dead (Unless You Are Using React Server Components in 2026) - URL: https://erpstack.io/blog/19-maximizing-web-vitals-react-server-components-2026 - Markdown: https://erpstack.io/blog/19-maximizing-web-vitals-react-server-components-2026.md - Published: 2026-06-01 · Last reviewed: 2026-06-01 · 1551 words - Cluster: performance (https://erpstack.io/blog/category/performance) How RSC changes LCP, INP and CLS in practice, plus the server-rendering patterns that improve each metric and the ones that quietly hurt. ### The Python Monolith Trap: Odoo vs. Custom Next.js Architecture in 2026 - URL: https://erpstack.io/blog/18-odoo-vs-custom-build-open-source-2026 - Markdown: https://erpstack.io/blog/18-odoo-vs-custom-build-open-source-2026.md - Published: 2026-05-31 · Last reviewed: 2026-05-31 · 1649 words - Cluster: erp (https://erpstack.io/blog/category/erp) Where Odoo genuinely wins, where its Python monolith becomes the constraint, and the decision criteria that separate the two cases. ### The Amazon Supply Chain Secret: Why They Don't Use Monoliths (And You Shouldn't Either in 2026) - URL: https://erpstack.io/blog/17-supply-chain-headless-erp-nextjs-2026 - Markdown: https://erpstack.io/blog/17-supply-chain-headless-erp-nextjs-2026.md - Published: 2026-05-30 · Last reviewed: 2026-05-30 · 1875 words - Cluster: architecture (https://erpstack.io/blog/category/architecture) How large operators decompose supply chain systems into independent services, and the consistency guarantees each boundary has to preserve. ### The HealthTech Real-Time Crisis: Why Your WebSockets Are Federal Violations in 2026 - URL: https://erpstack.io/blog/16-websockets-hipaa-compliant-nextjs-2026 - Markdown: https://erpstack.io/blog/16-websockets-hipaa-compliant-nextjs-2026.md - Published: 2026-05-29 · Last reviewed: 2026-05-29 · 1687 words - Cluster: compliance (https://erpstack.io/blog/category/compliance) Real-time health data breaks most HIPAA assumptions. Transport encryption, session handling and audit trails for WebSocket connections. ### The CFO Rebellion: Why NetSuite is a Fireable Offense (And the Financial Math of Custom ERPs) - URL: https://erpstack.io/blog/15-cfos-demand-custom-erps-2026 - Markdown: https://erpstack.io/blog/15-cfos-demand-custom-erps-2026.md - Published: 2026-05-28 · Last reviewed: 2026-05-28 · 2006 words - Cluster: erp (https://erpstack.io/blog/category/erp) The build-versus-rent arithmetic a finance team will actually accept, including maintenance and hosting — and the seat count where it flips. ### The Multi-Tenant Data Sovereignty Crisis of 2026: Why Your SaaS is Geopolitically Illegal - URL: https://erpstack.io/blog/14-data-sovereignty-multi-tenant-architecture-2026 - Markdown: https://erpstack.io/blog/14-data-sovereignty-multi-tenant-architecture-2026.md - Published: 2026-05-27 · Last reviewed: 2026-05-27 · 1843 words - Cluster: compliance (https://erpstack.io/blog/category/compliance) Residency rules now bite in the EU, India and several US states. How to partition tenant data by region without forking your application. ### Exposing the Edge: Real-World Vercel Middleware Latency Benchmarks for 2026 - URL: https://erpstack.io/blog/13-edge-middleware-benchmarks-2026 - Markdown: https://erpstack.io/blog/13-edge-middleware-benchmarks-2026.md - Published: 2026-05-26 · Last reviewed: 2026-05-26 · 1672 words - Cluster: performance (https://erpstack.io/blog/category/performance) Measured Vercel middleware latency across regions and payload sizes, with the methodology and the workloads where the edge loses. ### The Next.js 16 Migration Apocalypse: Why Your Enterprise Architecture is About to Break - URL: https://erpstack.io/blog/12-migrating-to-nextjs-16-enterprise-2026 - Markdown: https://erpstack.io/blog/12-migrating-to-nextjs-16-enterprise-2026.md - Published: 2026-05-25 · Last reviewed: 2026-05-25 · 1988 words - Cluster: nextjs (https://erpstack.io/blog/category/nextjs) The breaking changes that matter at enterprise scale, in dependency order, with the migration sequence that keeps the app shippable throughout. ### The End of Typing: If You Aren't Using AI to Build Your Custom ERP, You Are Lighting Money on Fire - URL: https://erpstack.io/blog/11-ai-driven-custom-erp-development-2026 - Markdown: https://erpstack.io/blog/11-ai-driven-custom-erp-development-2026.md - Published: 2026-05-23 · Last reviewed: 2026-05-24 · 1711 words - Cluster: erp (https://erpstack.io/blog/category/erp) Where AI tooling genuinely compresses ERP delivery, where it produces expensive rework, and how to review code you did not write. ### The Monolith is Dead: Why Composable 'Headless ERPs' Will Dominate the 2026 Enterprise - URL: https://erpstack.io/blog/10-headless-erp-nextjs-2026 - Markdown: https://erpstack.io/blog/10-headless-erp-nextjs-2026.md - Published: 2026-05-22 · Last reviewed: 2026-05-24 · 2238 words - Cluster: architecture (https://erpstack.io/blog/category/architecture) Composable ERP in practice: API-first module boundaries, the integration layer, and what breaks when you decouple the monolith badly. ### The Illusion of Free: Why Evaluating Open Source ERP Alternatives is a C-Suite Trap - URL: https://erpstack.io/blog/09-open-source-erp-alternatives-2026 - Markdown: https://erpstack.io/blog/09-open-source-erp-alternatives-2026.md - Published: 2026-05-20 · Last reviewed: 2026-05-24 · 2073 words - Cluster: erp (https://erpstack.io/blog/category/erp) Odoo, ERPNext and the rest are free to license and expensive to run. Where the money actually goes, and when open source is still the right call. ### Stop Crying About 'use client': Why React Server Components are Mandatory for the 2026 Enterprise - URL: https://erpstack.io/blog/08-react-server-components-enterprise-2026 - Markdown: https://erpstack.io/blog/08-react-server-components-enterprise-2026.md - Published: 2026-05-18 · Last reviewed: 2026-05-24 · 1907 words - Cluster: performance (https://erpstack.io/blog/category/performance) RSC patterns that hold up at enterprise scale: data-fetch placement, the client boundary, and the caching mistakes that undo the gains. ### The Ultimate Next.js B2B SaaS Boilerplate Takedown: Why You Need to Stop Writing Auth in 2026 - URL: https://erpstack.io/blog/07-nextjs-b2b-saas-boilerplate-2026 - Markdown: https://erpstack.io/blog/07-nextjs-b2b-saas-boilerplate-2026.md - Published: 2026-05-15 · Last reviewed: 2026-05-24 · 1857 words - Cluster: nextjs (https://erpstack.io/blog/category/nextjs) What a B2B SaaS starter must get right — auth, tenancy, billing, RBAC — and the cost of rebuilding each one badly from scratch. ### The HealthTech Autopsy: Why Your Next.js App Will Fail a HIPAA Audit in 48 Hours - URL: https://erpstack.io/blog/06-hipaa-compliant-nextjs-2026 - Markdown: https://erpstack.io/blog/06-hipaa-compliant-nextjs-2026.md - Published: 2026-05-13 · Last reviewed: 2026-05-24 · 2176 words - Cluster: compliance (https://erpstack.io/blog/category/compliance) The controls auditors check first in a Next.js healthcare app — BAAs, audit logging, PHI in logs and caches — and how each one is implemented. ### The Vercel Edge Lie: Why Your Global Latency is Terrible (And How to Actually Fix It in 2026) - URL: https://erpstack.io/blog/05-edge-middleware-performance-2026 - Markdown: https://erpstack.io/blog/05-edge-middleware-performance-2026.md - Published: 2026-05-11 · Last reviewed: 2026-05-24 · 2144 words - Cluster: performance (https://erpstack.io/blog/category/performance) Where edge middleware actually helps global latency, where it silently adds a round trip, and how to tell the two apart with real numbers. ### The Next.js Multi-Tenant Crisis: Why Your B2B SaaS is a Massive Security Breach Waiting to Happen - URL: https://erpstack.io/blog/04-nextjs-multi-tenant-architecture-2026 - Markdown: https://erpstack.io/blog/04-nextjs-multi-tenant-architecture-2026.md - Published: 2026-05-08 · Last reviewed: 2026-05-24 · 2378 words - Cluster: architecture (https://erpstack.io/blog/category/architecture) Why row-level security alone leaks across tenants, and how schema-per-tenant and database-per-tenant compare on cost, isolation and blast radius. ### The NetSuite Hostage Crisis: Why Building a Custom Alternative is the Only Escape in 2026 - URL: https://erpstack.io/blog/03-netsuite-alternative-custom-erp-2026 - Markdown: https://erpstack.io/blog/03-netsuite-alternative-custom-erp-2026.md - Published: 2026-05-06 · Last reviewed: 2026-05-24 · 2762 words - Cluster: erp (https://erpstack.io/blog/category/erp) A line-by-line TCO comparison of staying on NetSuite versus building, plus the migration path and the renewal traps to plan around. ### The Complete 2026 Guide to Custom ERP Development: Economics, Architecture, and Survival - URL: https://erpstack.io/blog/02-custom-erp-development-2026 - Markdown: https://erpstack.io/blog/02-custom-erp-development-2026.md - Published: 2026-05-04 · Last reviewed: 2026-05-24 · 3377 words - Cluster: erp (https://erpstack.io/blog/category/erp) What a custom ERP actually costs, how long it takes, and the architecture decisions that determine whether it survives contact with your business. ### The Ultimate 2026 Blueprint: Architecting Next.js for the Enterprise (A 5,000-Word Deep Dive) - URL: https://erpstack.io/blog/01-enterprise-nextjs-architecture-2026 - Markdown: https://erpstack.io/blog/01-enterprise-nextjs-architecture-2026.md - Published: 2026-05-01 · Last reviewed: 2026-05-24 · 4386 words - Cluster: architecture (https://erpstack.io/blog/category/architecture) How to structure Next.js for enterprise scale: RSC boundaries, tenancy, caching layers and the failure modes each one introduces. ## Cite this page Vivek Mishra. "Engineering Insights." ERPStack. https://erpstack.io/blog