How to Design a Postgres Schema for a Marketplace App (2026)
A step-by-step guide to modelling buyers, sellers, listings, orders and payments in Postgres, with the constraints and indexes that keep it correct under load.
Explore insights from our engineering team on software development, AI, cloud architecture, and industry best practices.
Master Claude API integration for enterprise applications. Learn authentication, streaming responses, tool use, vision capabilities, and best practices for building reliable AI-powered features with Anthropic's most advanced models.
Jishu Labs
CTO
January 20, 2026
13 min read
Featured Article
A step-by-step guide to modelling buyers, sellers, listings, orders and payments in Postgres, with the constraints and indexes that keep it correct under load.
An ADR is a short document capturing one architectural decision, its context and its consequences. Here is the format, when to write one, and what makes them fail.
Most PRDs fail because they describe a solution instead of a problem, and leave the ambiguity for engineers to discover mid-sprint. Here is a format that does not.
A repeatable method for turning a client brief into a defensible cost and timeline: decompose, estimate ranges, apply a measured multiplier, and show your working.
An honest comparison of AI and static-analysis code review tools — what each catches, what each misses, and when a human review is still the only thing that works.
Master Cursor AI and the vibe coding revolution. Learn Composer mode, multi-file edits, agent planning, and the modern AI-powered dev stack that lets you go from idea to production app in hours.
Playwright has won the browser testing wars. Learn setup, resilient test patterns, Page Object Model, API mocking, visual regression, and CI/CD integration with practical TypeScript examples.
Rust is the most loved programming language and growing fast. Learn ownership, memory safety, backend frameworks like Axum, WebAssembly integration, and when to choose Rust over Go or C++.
ShadCN UI is the dominant component library for React in 2026. Learn setup with Next.js and Tailwind v4, key components, theming, design systems, monorepo patterns, and how it compares to Material UI.
Platform engineering delivers 2-3x velocity gains. Learn how to build Internal Developer Platforms with Backstage, golden paths, self-service infrastructure, and DORA metrics for measuring success.
Vertical SaaS is a $720B market growing at 25.89% CAGR. Learn why industry-specific software commands premium pricing, top opportunities in healthcare, legal, and construction, and how to validate your vertical SaaS idea.
The low-code market hits $44.5B in 2026. Learn when to use AI app builders like Lovable, Bolt, and v0 vs custom development, the hybrid approach, and enterprise considerations for rapid AI app delivery.
PostgreSQL is the #1 most admired database used by 55.6% of professional developers. Master pgvector for AI, Supabase integration, performance tuning, RLS for multi-tenant SaaS, and advanced extensions.
Learn how to build production AI agents for enterprise automation. Covers agent architectures, LLM selection, tool integration, security governance, and ROI measurement for agentic AI systems.
Explore the most impactful SaaS architecture patterns in 2026. From AI-native design and event-driven architecture to multi-tenant patterns and serverless-first approaches that modern SaaS companies are adopting.
A comprehensive guide to designing and building multi-tenant AI SaaS applications. Covers tenant isolation, shared vs dedicated AI models, data partitioning, usage-based billing, and scaling strategies.
A practical decision framework for CTOs evaluating whether to build custom AI solutions or buy from vendors. Covers cost analysis, time to market, competitive advantage, vendor lock-in, and hybrid approaches.
Discover the 10 AI-powered features that are becoming table stakes for SaaS products in 2026. From intelligent search and AI copilots to predictive analytics and workflow automation with practical implementation tips.
Master Claude API integration for enterprise applications. Learn authentication, streaming responses, tool use, vision capabilities, and best practices for building reliable AI-powered features with Anthropic's most advanced models.
Master the latest Next.js features including Turbopack, React Server Components, Partial Prerendering, and the new App Router enhancements. A comprehensive guide to migrating and leveraging Next.js 15/16 for production applications.
Master LangChain for building production-ready AI applications. Learn chains, agents, memory systems, RAG pipelines, and deployment strategies with practical code examples for real-world use cases.
Learn how to implement Zero Trust security architecture for modern applications. Covers identity verification, micro-segmentation, continuous monitoring, and practical implementation patterns.
Secure your Kubernetes clusters with proven strategies for pod security, network policies, secrets management, and runtime protection. A comprehensive guide to implementing defense-in-depth for cloud-native applications.
Compare AWS, Azure, and Google Cloud Platform for your cloud infrastructure. Analysis of services, pricing, strengths, and how to choose the right cloud provider for your business needs.
Master the React Native New Architecture with Fabric renderer and TurboModules. Learn migration strategies, performance optimizations, and best practices for building high-performance cross-platform mobile applications.
Master React Server Components for building faster, more efficient web applications. Learn RSC patterns, data fetching, streaming, and migration strategies for Next.js and beyond.
Compare Flutter and React Native for mobile app development in 2026. Analysis of performance, developer experience, ecosystem, and when to choose each framework for your next project.
Choose the right vector database for your AI applications. Compare Pinecone, Weaviate, Qdrant, and Milvus on performance, scalability, features, and cost for production RAG and semantic search systems.
Master Retrieval Augmented Generation (RAG) for building accurate, grounded AI applications. Learn architecture patterns, vector databases, chunking strategies, and production deployment best practices.
Compare GraphQL and REST for API design. Learn when to use each, implementation patterns, performance optimization, and how to choose the right approach for your application architecture.
Compare the leading AI coding assistants for 2026. In-depth analysis of GitHub Copilot, Cursor, and Claude Code features, performance, pricing, and which is best for different development workflows.
Compare Terraform and Pulumi for infrastructure as code. Learn the differences in language support, state management, and ecosystem to choose the best IaC tool for your cloud infrastructure in 2026.
Implement secure authentication with OAuth 2.1 and OpenID Connect. Learn PKCE, token handling, refresh strategies, and common security pitfalls to avoid in modern web and mobile applications.
Learn advanced prompt engineering techniques for GPT-4, Claude, and other LLMs. Discover patterns for reliable outputs, chain-of-thought reasoning, structured data extraction, and production prompt management.
Master TypeScript 5.x features including decorators, const type parameters, satisfies operator, and module resolution improvements. Practical examples for building type-safe applications.
Navigate the microservices vs monolith decision. Learn when to choose each architecture, migration strategies, and how to build scalable systems that match your team and business needs.
Build production-grade CI/CD pipelines with GitHub Actions. Learn workflow optimization, matrix builds, reusable workflows, security best practices, and deployment strategies for modern applications.
Learn to build AI agents that can reason, plan, and execute complex tasks autonomously. Covers agent architectures, tool use, memory systems, and production deployment patterns.
Master Tailwind CSS 4 with its new features including the Oxide engine, CSS-first configuration, and improved performance. Complete migration guide with practical examples.
Master SwiftUI for building modern iOS, macOS, watchOS, and visionOS applications. Learn declarative UI patterns, state management, navigation, and performance optimization techniques.
Optimize PostgreSQL for production workloads. Learn query optimization, indexing strategies, connection pooling, and monitoring techniques for high-performance database applications.
Build secure, optimized Docker containers for production. Learn multi-stage builds, security hardening, image optimization, and best practices for containerized applications.
Secure your APIs against common attacks. Learn authentication, rate limiting, input validation, and monitoring strategies for protecting production API endpoints.
Implement AI-powered code review in your development workflow. Learn about automated review tools, integration patterns, and how to maximize code quality with AI assistance.
Learn to fine-tune large language models for domain-specific tasks. Covers data preparation, training strategies, evaluation metrics, and deployment of custom LLMs.
Build a comprehensive frontend testing strategy. Learn unit testing with Vitest, component testing with Testing Library, and E2E testing with Playwright.
Optimize your web applications for Core Web Vitals. Learn LCP, FID, and CLS optimization techniques for faster, more responsive websites that rank higher in search.
Build fast, globally distributed applications with serverless and edge computing. Learn about Cloudflare Workers, Vercel Edge, and AWS Lambda@Edge patterns.
Implement comprehensive observability for modern applications. Learn the three pillars of observability, tool selection, and best practices for monitoring distributed systems.
Learn to build AI tool integrations with Model Context Protocol. Create MCP servers for databases, APIs, and custom tools that LLMs can use.
Build applications with multimodal AI that understands images, documents, and diagrams. Learn vision model capabilities, use cases, and implementation patterns.
Build accessible websites that work for everyone. Learn WCAG 2.2 requirements, testing techniques, and practical implementation patterns for inclusive design.
Build and deploy mobile apps faster with Expo and React Native. Learn Expo Router, EAS Build, and modern mobile development patterns for iOS and Android.
Build real-time features with WebSockets and modern alternatives. Learn Socket.io, server-sent events, and scaling strategies for live applications.
Design and build modern data pipelines. Learn ETL patterns, data orchestration with Airflow and Prefect, and best practices for reliable data processing.
Compare Supabase and Firebase for your next project. Analysis of features, pricing, developer experience, and when to choose each BaaS platform.
Achieve SOC 2 compliance for your startup. Learn the framework, implementation steps, and how to build security practices that satisfy auditors and customers.
Learn how to build and operate Internal Developer Platforms (IDPs) that boost developer productivity, reduce cognitive load, and accelerate software delivery. A complete guide to platform engineering practices, tools, and organizational patterns.
Master Retrieval Augmented Generation (RAG) for enterprise AI applications. Learn advanced chunking strategies, vector databases, hybrid search, and evaluation techniques to build accurate, reliable AI systems grounded in your data.
Discover how AI agents are revolutionizing software development and business automation. Learn to build autonomous AI systems that can reason, plan, and execute complex tasks with minimal human intervention.
Master observability in modern distributed systems. Learn the three pillars of observability—metrics, logs, and traces—along with best practices for implementing comprehensive monitoring solutions.
Build fast, reliable CI/CD pipelines that enable daily deployments. Learn automation strategies, testing best practices, and deployment patterns from teams shipping hundreds of times per day.
Explore how artificial intelligence is revolutionizing the way we build, test, and deploy software. From code generation to automated testing, discover the tools and techniques shaping the future of development.
Master database scaling with proven strategies for handling growth. Learn read replicas, sharding, caching, and when to move beyond traditional RDBMS.
Learn the latest patterns and anti-patterns in microservices design, including service mesh, event-driven architecture, and observability strategies.
Achieve blazing-fast web performance with proven optimization techniques. From code splitting to image optimization, learn how to deliver exceptional user experiences.
Real-world insights from building and scaling React Native applications serving millions of users across iOS and Android platforms.
Deploy Docker containers confidently in production. Learn image optimization, security hardening, orchestration patterns, and monitoring strategies.
Discover strategies to reduce your Kubernetes infrastructure costs by up to 60% without compromising performance or reliability.
Master advanced TypeScript patterns for large-scale applications. Learn generics, utility types, conditional types, and architectural patterns for maintainable code.
Build and deploy serverless applications on AWS Lambda, Azure Functions, and Google Cloud Functions. Learn patterns, best practices, and cost optimization strategies.
A comprehensive guide to implementing zero-trust architecture in your applications, from authentication to network segmentation.
Design APIs that developers love to use. Learn REST principles, versioning strategies, error handling, documentation, and security best practices.
Understanding edge computing architecture and its implications for modern application development and deployment strategies.
Build confidence in your code with comprehensive testing strategies. Learn test pyramid principles, mocking patterns, and automation techniques.
Shift security left with DevSecOps practices. Learn automated security scanning, vulnerability management, and compliance automation.
An updated comparison of GraphQL and REST APIs, helping you choose the right approach for your next project.
Create productive remote engineering cultures that attract top talent. Learn communication strategies, tools, processes, and team-building practices.
Learn proven strategies for migrating enterprise applications to the cloud with minimal disruption. From assessment and planning to execution and optimization.
A deep dive into building scalable real-time applications using WebSockets, Socket.io, and Node.js for millions of concurrent users.
Learn how to automate your machine learning workflows using MLOps best practices and tools like Kubeflow and MLflow.
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