Node.js Buffer Upload for OpenAI Images in Private S3-Compatible Storage
Short answer: keep the upload on the backend, send the generated image buffer straight to private object storage, and save only an immutable object…
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Building an AI Automation Pipeline in Node.js with BullMQ: Queues, Retries and Rate Limits
Most AI automation demos are one await away from breaking. A webhook comes in, the handler calls a model, the response gets written to the database,…
The Portability Audit Take-Home: Grade Environment Assumptions, Not Features
A take-home that runs on the reviewer's laptop grades features; a take-home that runs anywhere grades engineering discipline. The task below asks a…
Integrating OpenAI Function Calling with Meta WhatsApp Cloud API
Traditional chatbot flows rely on static decision trees ( Press 1 for Sales, Press 2 for Support ). While predictable, they create severe user frict…
The wappalyzer npm package is deprecated: options for detecting tech stacks in code
For years, npm install wappalyzer was how developers detected a website's technologies in code. The package's last release, 7.0.3 from August 2023,…
Node.js SMS Alert API: 3 Template Ownership Rules for Home Security SaaS
The best SMS alert API for a US/EU home-security SaaS is the one that lets the application own message intent and immutable evidence while the trans…
Using AutoClaws free GLM models usage from other sdks (opencode / claude code)
ive been maintaining this small opensource project GLM Proxy (glmproxy on npm) for a while and its finally on the level where im happy to share it o…
Designing a Private Avatar Asset Set with Sharp: Originals, Crops, and Fixed Sizes
Short answer: for a Node.js avatar thumbnail, use Sharp to crop and resize the upload into fixed 32, 64, 128, and 256 pixel images, keep the origina…
398 of 692 Products Were Published in One Afternoon. Zero Were Created in 90 Days
I run a visa agency in Bali. The other half of my week goes into Apify Actors, and one of them profiles Shopify stores: you hand it a list of domain…
I'm 13. I Spent 101 Days Building a Secure Social Network with Node.js
Hey dev community! 👋🏻 I'm Seif, a software engineer with 4 years of experience who absolutely hates vibe-coding and prefers designing architecture b…
The Cold-Start Budget Packet: A Take-Home Where the Free Server Is Allowed to Vanish
A take-home that never simulates a host restart measures almost nothing about cost discipline. The packet below asks one question: after the machine…
TypeScript Email Tests Need a Typed Event Boundary
Email tests often start with a simple promise: trigger a signup flow, wait for a message, click the link, and assert the account is active. It sound…
I built an MCP server that lets AI agents book real hotel rooms (no OTA commission)
Booking.com takes 15-25% commission and owns the customer relationship. I run a small network of independent establishments in Luxembourg, and I wan…
SMS OTP Delivery Status Explained: Polling for Creator Payout Verification
For creator payout verification, keep OTP creation, expiry, verification, and session issuance on the server. Normalize US and EU phone numbers befo…
Two things must happen before our server module loads, and a require is all that enforces the order
Notifio is an Electron app whose main process is also its HTTP server. There is no child process: app.whenReady() fires, and then one line pulls an…
Setting an env var above your imports does not run before them, and our integration test works anyway
The largest test file in PubTrivia is 543 lines, and it has no mocks in it. It calls the actual server actions a player's phone calls, and the actua…
How to Rotate Claude API Keys with Secrets Manager and Lambda Without Getting Locked Out
Developers rush to rotate API keys for security, only to discover their AI‑powered apps suddenly start throwing 401 errors. The hidden culprit? A st…
Measure the Escalation Rate. A Local-First Router That Never Earns Back Is Just Latency.
A local-first router only pays off if tier 1 absorbs most of your traffic. If your local model answers 20% of prompts and escalates the rest, you di…
Node.js AI Image Persistence: Bucket Privacy, Object Storage, Presigned Downloads
Short answer Short answer: keep generated images in a private object-storage bucket, persist the object key in your application database, and mint a…
What I Learned Tracking 5 Realtime Moderator Signals in a Node.js Voice Lobby
Short answer: for realtime moderator disconnects in a gaming voice lobby, correlate observability signals across transport, session ownership, and f…
How to Generate a Secure JWT Secret Key in 2026 (Node.js, Python, Java)
A JSON Web Token (JWT) is only as strong as the secret key that signs it. Yet the single most common JWT vulnerability in production is still a weak…
Proposed Shared Hosting for Node.js: Co-locating App, Database, and Files with Idle App Suspension for Resource Efficiency
Introduction: Rethinking Hosting for Smaller Node.js Apps Hosting smaller Node.js applications has long been a balancing act between cost, performan…
Resuming work at a time you only know from an error message
Disclosure: I'm the developer of the tool described here, and an AI agent drafted this post from the project's source code. When a long-running AI c…
Node.js API Routes and Server Actions: 3 Error Tracking Boundaries (With Attribution)
Instrument three server-side boundaries, but define the cost-attribution record before choosing the error backend. For a customer-support pricing ru…
Why Your Connection Pool is Lying to You
We hit a wall last month. Traffic was stable, CPU was idle, but p99 latency spiked to 2s. The PostgreSQL server looked healthy. The culprit wasn't t…
When POST becomes GET: a redirect bug in a Node.js fetch wrapper
A POST followed a 302 redirect and became a GET. Its body disappeared, but its Content-Type header stayed behind. That showed up while extending the…
E-Commerce Webhook Registration: Node.js Queue Isolation for Internal Consumers
An e-commerce access review becomes hard to sign when fraud, fulfillment, finance, and customer messaging all hold the marketplace webhook credentia…
Recruiting Candidate Search Source Deduplication — A 3-Stage Node.js Retrieval Design
Short answer: use a staged retrieval design with explicit collections, bounded queries, and traceable source context for recruiting candidate search…
I built a Supabase-style query client that talks directly to Postgres
I like the Supabase JS client. .from('todos').select('id, task').eq('done', false) reads like what I mean, and { data, error } means I'm not wrappin…
Property Access Reviews: Readiness Health Endpoint Checks for Cached API Credentials
Use a cached credential-and-tier observation for readiness, and give that observation an explicit age limit. If the last confirmed observation is st…