Server Tokens Beat Client Keys for Idempotent Realtime Support Chat (Untrusted Clients)
Short answer: issue narrow, revocable tokens to the browser, keep the durable credential on the server, and make an application event ID the stable input to eve…
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Short answer: issue narrow, revocable tokens to the browser, keep the durable credential on the server, and make an application event ID the stable input to eve…
When building Model Context Protocol (MCP) servers, one of the most common early mistakes is writing code like this: // ❌ THE ANTI-PATTERN: Throwing unhandled e…

One refund goes out. Then the same incident triggers again after a service restart, or arrives four times simultaneously, and your remediation logic turns out t…
A key named first-name looked fine in the JSON. Laravel quotes it, and that array syntax is valid. The TypeScript draft and the PHP DTO copy the hyphen into the…
Here is a permission check that looks responsible and quietly breaks pagination: projects : async ( _ , { first , after }, ctx ) => { const { rows } = await ctx…
Email verification becomes a different problem once delivery is asynchronous. The browser submits a form, a provider sends a message, and your app receives one …
Disclosure: I built SaveShelf, and this post was drafted with AI assistance and edited by me. Reddit's Saved page only lists your newest ~1,000 items and has no…
I work on OnePassApps, the team behind app.onepassapps.com. We are launching on TinyLaunch on Monday, 7 December 2026, and the launch page is already open, so t…
Originally published on the Momentic blog . TL;DR Playwright fixtures supply test dependencies and handle setup and teardown. This guide uses the built-in page …

A stack trace is a list of "who called whom", newest first. Most of us skim it for a file name we recognise. A few habits make the trace do that work for you. R…
When I started checking whether an AI search product could find a small tool, I ran into a measurement problem before a search problem: three different tasks we…
Randomness is one of the few things in software that looks correct while being wrong, which makes it worth testing deliberately. This post is about a small tool…
Introduction Creating a canvas-based tool to validate alpha channel integrity is essential for developers handling transparent assets. This guide provides a ste…
iPhones don't let apps read your texts, so there's no SMS API to call. What iOS does have is Shortcuts: a Message automation can run an action every time a text…
Solana's original SPL Token standard powered billions of dollars in volume, but enforcing custom transfer logic—such as mandatory royalties, compliance checks, …
The contrib release of the OpenTelemetry Collector 0.164.0 is a 420.3 MB binary on linux/amd64. We built a Collector with the OpenTelemetry Collector Builder (o…
HTTP/2 Multiplexing Under Load: Stream Prioritization, Head-of-Line Blocking, and the Connection Reuse Trap HTTP/2 shipped with a promise: a single TCP connecti…
A selected backup snapshot should remain private until an authorized tenant asks to restore it. The least complex way to deliver its archive is a short-lived pr…
The page says visible_couriers_stale > 8% for 5m . Dispatchers see drivers frozen two streets behind their actual position, while the ingest graph still looks h…
A drafting agent returns a query that reads fine: three joins, a GROUP BY , a date filter, an ORDER BY on the aggregate. Nothing in the SQL signals danger. The …