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Original rewrites on React, Node.js, TypeScript and AI — practical notes from the same engineering practice behind our operator software. Article bodies are in English.
Tagged: express
Cannot Find Module: Debugging Express Imports and Route Params
A TypeScript Express weather API fails on a missing controller import. Trace paths, casing, and exports, then validate :city before calling live weather APIs.
852 wordsRead articleDeploying a Node.js App on cPanel Shared Hosting With Passenger
A step-by-step guide to running an Express app on cPanel shared hosting with Application Manager and Passenger, including restarts, env variables and 503 fixes.
1265 wordsRead articleNode.js and Express Interview Prep: 70 Questions With Precise Answers
A structured review of 70 Node.js and Express interview questions, from the event loop and streams to middleware, security and scaling, with corrections to common answers.
4827 wordsRead articleServer-Side Input Validation in Express with express-validator Chains
Learn why Express APIs must validate input on the server, how express-validator chains record errors for validationResult, and how to structure a production route.
2373 wordsRead articleSending and Receiving SMS in Node.js with Twilio Webhooks and Express
Build a small Express server that sends texts through Twilio, receives replies via a webhook exposed with ngrok, and answers them automatically with TwiML.
1483 wordsRead articleRemoving try/catch Boilerplate from Express Routes with asyncHandler
Learn how error middleware, an asyncHandler wrapper and a custom AppError class move Express error responses out of every route and into one consistent place.
1231 wordsRead articleKilling N+1 Queries and Correlated Subqueries in a Node.js Postgres API
A teardown of two slow Express endpoints on Postgres: how missing indexes, nested N+1 loops and a per-row subquery add up, and how to cut them to under 200ms.
2347 wordsRead articleSeven Beginner Node.js and Express Coding Tasks, Solved and Explained
Work through seven typical junior Node.js interview tasks, from Express routes and middleware to error handling, string reversal and duplicates, and learn to explain each one.
1640 wordsRead articleGuarding the Express Boundary: One Zod Middleware for Body, Params and Query
Learn how to validate Express request bodies, route params and query strings with one reusable Zod middleware, and how it complements Sequelize model validation.
2021 wordsRead article
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