Spring Boot vs NestJS: Runtime, DI and Ecosystem Compared
Spring Boot vs NestJS for backend teams: how each wires dependency injection, JVM vs Node runtime trade-offs, ecosystem depth, and a checklist to choose.
13 min read
Category
Backend Engineering
Runtimes, frameworks and API styles: Node.js, Bun, NestJS, Spring Boot, Python, REST, GraphQL and gRPC.
API Error Handling: Designing a Consistent, Versioned Error Contract
Treat API error handling as a public contract: HTTP status codes, stable error codes from a catalog, and RFC 9457 Problem Details bodies.
14 min read
REST API Pagination, Filtering and Sorting: One Contract
Learn why cursor pagination over a unique, indexed sort key beats offset pagination, and how to design filtering, sorting, cursors and limits as one contract.
14 min read
Scaling Node.js: Cluster, Worker Threads and Horizontal Scale
Learn when scaling Node.js needs worker threads, node cluster or horizontal load balancing, how each works, and how to diagnose the bottleneck first.
17 min read
API Authentication Patterns: Sessions, JWTs and API Keys Compared
Learn how sessions, JWTs and API keys differ in credential type, transport and validation, and how to choose by client type and revocation latency.
13 min read
Spring Boot Configuration: Profiles, Properties and External Config
How Spring Boot configuration orders property sources, when to use profiles, and how to externalise config with environment variables and mounted files.
13 min read
API Input Validation: Schemas, Rules and Shared Contracts
Learn how to layer API input validation: schema checks at the boundary, domain rules deeper in, shared contracts, error formats and safe evolution.
14 min read
Express.js in Production: Structure, Error Handling and Security
How to run Express.js in production: separate the app from the server, layer the code, centralize error handling and set a helmet-based security baseline.
14 min read
Python Backend Frameworks: FastAPI vs Django vs Flask for APIs
Choose among Python backend frameworks by deciding how much the framework should own and whether your API workload truly needs async Python.
13 min read
NestJS vs Express vs Fastify: Choosing by Team Size and Structure
A framework comparison of NestJS vs Express vs Fastify: how each works, structure vs flexibility trade-offs, cost, testing, migration, and which teams each fits.
14 min read
Spring Boot Microservices: A Practical Starting Architecture
Start Spring Boot microservices with a few well-bounded services, typed configuration properties, consistent REST APIs, and Actuator health checks from day one.
14 min read
Secrets Management Backend vs Env Vars: Config vs Secret Guide
Learn where to draw the config vs secret line, why env secrets are only a delivery mechanism, and how to design a secrets management backend with rotation.
15 min read