How to Deep Merge JSON Files Safely in the Browser (100% Client-Side)
We've all been there: It's Friday at 4:55 PM. You just need to merge two simple .json config files for deployment. "This will take 30 seconds," you…
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Defensive Rollback Gates for Malformed Metrics Query JSON Responses
Rollback safety changes the design: an alert worker must treat a malformed or partial metrics query response as unknown, never healthy . For a gamin…
HealthKit to JSONL vs JSON: one snapshot survives a cut sync, the other gives you nothing
Two apps can write the exact same Apple Health records to disk and behave nothing alike the moment a sync gets interrupted. I benchmarked it on 2026…
Do We Really Need Reflection or Code Generation for JSON in Kotlin? Building a Lightweight JSON Library
Building a lightweight Kotlin/JVM JSON library with a direct JSON representation and optional reflection-based mapping between JSON and Kotlin class…
JSON vs YAML: When to Use Which
JSON and YAML can describe the same data, so the choice comes down to who (or what) reads and writes the file. JSON is strict, small, and easy for s…
[Перевод] Роутинг NGINX на предикатах для обработки API-трафика без скриптов
Типовую задачу проксирования трафика на базе заголовков и тела HTTP-запроса теперь можно решать напрямую с помощью предикатных локейшенов в NGINX. Д…
Valid JSON, Wrong Shape: Structured Output Across Three AI Backends
On March 3rd, 2026, a planning step in our content pipeline asked the model for a list of entities and got back exactly what it asked for. That was…
I Put `minimum` in My JSON Schema. ShapeCraft Ignored It. That Was By Design
I was extracting customer details from onboarding messages. The result needed a name, an age, and a country code before it could be passed to the ac…
JSON to String Conversion: The Edge Cases That Actually Bite in Production
Every JS developer writes JSON.stringify(data) a hundred times before they ever stop to think about what it's actually doing under the hood. It's on…
JSONPath Cheat Sheet: Syntax, Examples & Common Mistakes
JSONPath looks simple until you actually need a filter, a slice, or a recursive match - then the handful of symbols that looked obvious start behavi…
Go 1.27: generic-методы, которых не видит reflect
Go 1.27 (на момент написания rc3, финал обещают в августе) приносит generic-методы: метод наконец может объявить собственный тип-параметр. Взял gola…
Moderation Summary JSON API: 4 Schema Rules for Title and Bullets
Use chat completions with schema-like JSON instructions, then reject any response that fails a local contract before a moderation report reaches a h…
How I wrote a Go message broker with a throughput of a million messages per second
I built HermitMQ entirely in Go. The main feature is ditching heavy wrappers like JSON in favor of a custom 29 byte binary protocol. Additionally, d…
How to Minify JavaScript, CSS, and JSON (Free, No Build Step)
Minification is one of those things everyone knows they should do before shipping to production, but reaching for a full build pipeline just to shri…
2026 LLM API JSON Sales Call Summaries with Bullets and CRM Action Items
A one-person gaming SaaS needs each LLM sales-call summary to arrive as structured output: a JSON schema enforced by its Node.js API, with tenant co…
10 JSON Tools Every Developer Needs
If you write software, you deal with JSON. It's in your API responses, your config files, your logs, your package.json , your test fixtures — everyw…
Stop Reading Raw JSON: A Better Workflow for Debugging API Responses
If you work with APIs every day, you've probably had this experience. You copy a JSON response from your browser's DevTools... ...and you're greeted…
Structured Security Findings From a 7B Model: The Schema That Stopped Breaking
For about two weeks last year, roughly one in five runs of my audit pipeline died on the same line: JSON.parse . The model's security analysis was o…
Are duplicate keys valid in JSON? What RFC 8259 actually says
RFC 8259 says object names SHOULD be unique — so duplicates are legal but the behavior is unpredictable. See which value each parser keeps, how to r…
Один файл, одна команда: как мы упростили запуск dev-окружения с помощью Runium
Локальный запуск dev-окружения в крупном проекте может превратиться в отдельный квест: несколько процессов, Docker-контейнеры, переменные окружения,…
The DevOps Team That Never Sleeps
Everyone has discovered that AI writes code fast. The harder question is when you can trust what it wrote — especially if you weren't watching while…
The Research Assistant in the Room
Last time , I split the two weeks of building Omnist into two teams of one: a Research Assistant for conceptualization, a DevOps team for materializ…
A Team of One, Running Two Teams
The initial implementation of Omnist , a tested, open-source Python library , came together from a 16-year-old PhD paper in two weeks — one person,…
How to Compare JSON Files the Easy Way (Without False Positives)
Last month I spent almost an hour convinced an API had a bug. Two responses from the same endpoint, same data, and my diff tool was showing me a wal…
Fixing broken JSON: why "Unexpected token" usually isn't a JSON problem
You call JSON.parse() (or res.json() ) and get: SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON Before you hunt for a mis…
The example is the schema: extracting Japanese qualified invoices to JSON
Japan's qualified invoice system requires every invoice to carry a registration number (a "T" followed by 13 digits) and a per-rate tax breakdown —…
I Thought I’d Never Need XML Again… Until a Client Asked for It
Like most developers working today, I spend about 99% of my life swimming in JSON. It’s just the default language of the modern web. Whether you're…
Working With Massive JSON Responses
Working With Massive JSON Responses Without Losing Performance Every developer eventually encounters it. You make an API request expecting a few hun…
Exporting BibTeX to CSV/Excel/JSON/HTML
Sometimes you don't want a formatted bibliography, you want your bibtex as a spreadsheet or a JSON array you can pipe into something else. Four sepa…
Convert a JSON API Response to Excel: 3 Ways (No-Code, Python, Power Query)
You call an API, get back JSON, and someone non-technical asks for it "in Excel." Here are three ways to do that — pick based on whether it's a one-…