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…
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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…
How to Validate and Format JSON in JavaScript (and a Free Tool That Does It Instantly)
Working with JSON in JavaScript means dealing with one constant problem: is this string actually valid JSON, and how do I make it readable? Whether…
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…
The model obeys your schema, not your description
Two models. Same prompt, same tool description, same request. One of them returned this: { "kind" : "entity" , "entityName" : "todo" , "definition"…
Why JSON Array Diffing Is Harder Than It Looks
Change one field in a JSON object, then reorder the surrounding array. A diff can suddenly report that nearly every record changed. Many JSON diff t…
A Practical JSON Minification Workflow for Web Developers
Introduction JSON is one of those formats developers work with every day without thinking much about it. We use it for API responses, configuration…
Decode and encode JSON in Haskell like an Elm developer
If you're an Elm developer writing Haskell and you like elm/json , you might like dwayne/hs-json-codec . hs-json-codec provides JSON decoders and en…
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…
Five Languages, One Law
A library gets proven by people using it. A specification is a harder claim to back up: someone else has to build from your rules alone, without bei…
Как мы переводили страницу объявления на Beduin в мобильной версии Авито
Всем привет! Меня зовут Егор Савинцев , я Frontend Platform Engineer в Авито . Сейчас я работаю в команде архитектуры, а до этого в команде Phobos в…
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…
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…
Compact Design: a JSON language models can write and Figma can import
Don't ask a model to speak Figma's plugin API. Don't ask it for CSS and hope a screenshot is a design. I wanted a format a model can write, a schema…
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…
Contract Testing in 10 Lines: JSON Schema Validation in Postman
Here's a bug your test suite probably wouldn't catch. A backend developer refactors the user model. The id field — an integer since forever — starts…
Ошибка в расчёте скидки, которую не видно глазами: проверяем ответ API по документации, когда автотестов нет
Есть класс ошибок, которые проходят все ручные проверки и спокойно доезжают до продакшена. Не пятисотки, не пустые поля, не слом…
How I Built a Free JSON to Excel Converter That Handles Nested JSON
If you've worked with APIs, you've probably received JSON responses that needed to be shared with non-technical users. While developers are comforta…
Alpha to Beta: Bringing In QA
Two posts ago , R and D were two roles, two rulebooks, one person switching hats. Last time was D's story: the loop that made shipping safe. By now…
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…
I built a browser-only JSON & Markdown workbench so my data never has to leave my laptop
The problem Every time I needed to format, diff, or validate a gnarly JSON payload — a webhook log, an API response, a config file with a stray trai…
Bulk-validating JSON test cases against a CSV schema with JSONPath (jsonpath-plus)
What this is Of all the tools on Torinoa Tools , the one I personally use the most is the JSON Expected Value Validator . When working on APIs, I re…
Measured: the last Sonnet update started wrapping raw JSON in a markdown fence
Liquid syntax error: Unknown tag 'endraw'
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…
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 —…
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…
I Built a Browser-Only JSON Schema Validator — Draft-07, $ref, allOf/anyOf/oneOf, if/then/else, 173 Tests
I Built a Browser-Only JSON Schema Validator — Draft-07, $ref, allOf/anyOf/oneOf, if/then/else, 173 Tests JSON Schema validation usually means pulli…
JSONata Explained: Query and Transform JSON Without the Boilerplate
Working with complex JSON payloads can quickly become a nightmare. You end up chaining .map() , .filter() , and .reduce() calls across multiple line…