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AWS: Inaccurate Estimated Billing Data – $1.7 billion

URL already posted: https://health.aws.amazon.com/health/status I've got an estimated bill for $1.7 BILLION over this month. Normal usage is < $5. Obvs have created an urgent AWS support ticket. Anyone else seeing something like this? Update: Reddit link: https://www.reddit.com/r/aws/comments/1uyuaw7/help_my_bill_s...

2026-07-17 原文 →
AI 资讯

Why Static Accessibility Scanners Miss What AI Agents Hit

This button passes every automated accessibility scan we've thrown at it: <button class= "btn-primary" type= "button" > Check availability </button> And it breaks every AI agent that tries to book a room through it. The markup is clean: a real <button> , a proper accessible name from its text content, an explicit type . Nothing to flag. The failure isn't in the button, it's in what happens after the click. And no static scanner ever clicks. What a scanner actually sees Static accessibility scanners evaluate the DOM at a point in time. Usually the initial render: HTML parsed, framework hydrated, nothing interacted with. They check that state against WCAG rules, missing alt text, contrast ratios, label associations, heading order. That's genuinely useful. It's also a photograph of a lobby, when the task happens in the hallways. Here's what never appears in the initial DOM of a typical booking flow: The date picker that mounts when the check-in field receives focus The error message injected after a failed form submit The room-selection modal that opens on "Check availability" The loading state between "Book now" and the confirmation A scanner reports zero issues on all of these, for the simple reason that at scan time, none of them exist. What an agent actually traverses An AI agent completing a booking doesn't evaluate a snapshot. It walks the flow: reads the accessibility tree, decides on an action, performs it, waits for the interface to respond, reads the tree again. Every state transition is a place where the tree can lie to it. Let's look at three patterns we keep finding in real audits. All three pass static scans. All three stop an agent. 1. The modal that exists on screen but not in the tree { isOpen && ( < div className = "modal-overlay" > < div className = "modal" > < h2 > Select your room </ h2 > < RoomList rooms = { available } /> </ div > </ div > )} Visually: a modal. In the accessibility tree: a div soup appended somewhere in the body, with no role="di

2026-07-17 原文 →
AI 资讯

Two Bugs, Two Strangers, One Week: What Shipping Early Actually Buys You

A week ago I put a rough, honestly-a-bit-thin version of PulseWatch in front of real people for the first time. Within days, two different strangers — independently, unprompted — found two real gaps in it. Neither was catastrophic. Both were exactly the kind of thing you only find by watching someone else use the thing you built. This is the story of both, and the fixes. Bug one: the run that never ends This first bug came from a friend testing it on a real script. His question was simple: "What happens if start fires twice before end ?" Good question. At the time: nothing good. Here's why. PulseWatch works on two pings — a job calls /start when it begins and /success (or /fail ) when it's done. The server tracks whichever run is currently "open" for a monitor. The bug: if a job's process restarts mid-run — a crash-and-retry, a redeploy that catches it mid-flight, a scheduler firing twice — you get a second /start before the first run ever closes. The old run just sits there, open forever, an orphan with no ending. Worse, because the watchdog was still waiting on that run's expected finish time, it could fire a false "still running" alert for a run that was, for all practical purposes, dead and abandoned. The fix is a small rule with an outsized effect: a new /start supersedes whatever run is currently open. The old run gets marked superseded — a terminal, non-alerting status — and a fresh run begins clean. The watchdog was updated to treat superseded as a dead end: nothing to wait on, nothing to alert about, and it never shows up in a user's run history. It's not a failure and it's not a success. It's just "this run doesn't matter anymore, a newer one replaced it." The logic, roughly: def handle_start ( monitor ): open_run = monitor . get_open_run () if open_run is not None : open_run . status = " superseded " open_run . finished_at = now () new_run = Run ( monitor = monitor , status = " running " , started_at = now ()) db . session . add ( new_run ) db . session .

2026-07-17 原文 →
AI 资讯

Ask HN: Do you say please and thank you to your LLMs?

This is an orthogonal question to whether LLMs have qualia (almost certainly no) and to the question of whether any hypothetical qualia would be in any way correlated with word choice (also almost certainly no), as opposed to mechanistic factors such as runtime and memory access patterns.

2026-07-17 原文 →
AI 资讯

The Go Era: What Actually Matters in TypeScript 7.0 (Beyond the 10x Speedup)

The tech world has spent the last year buzzing about the complete rewrite of the TypeScript compiler. Now that TypeScript 7.0 is officially out, the headline is clear: a native Go port delivering 8x to 12x build speedups and an instant editor experience. But if we look past the raw performance numbers, TypeScript 7.0 represents something much deeper. It is the most aggressive modernization sweep in the language's history. The TypeScript team used this architectural migration to eliminate a decade of technical debt, kill off legacy web standards, and restructure how the compiler interacts with the JavaScript ecosystem. If you are planning to upgrade your frontend or backend repositories, here is what actually matters, why the team chose Go, and the breaking changes you need to prepare for. 1. The Architectural Plot Twist: Why Go and Not Rust? When Microsoft first announced they were moving away from a bootstrapped JavaScript compiler to a native binary, the collective internet assumed they would choose Rust—the darling of the modern frontend tooling space (used by SWC, Turbo, and Oxc). Instead, the team chose Go , sparking heavy debate across the community. The reasoning reveals exactly how the TS team prioritizes stability over absolute micro-benchmarks: Bug-for-Bug Compatibility: The goal wasn't to write a brand-new compiler from scratch; it was a 1:1 faithful translation of the massive, decade-old TypeScript codebase. Go’s straightforward syntax allowed a clean mapping of existing JavaScript logic. The Memory Model Challenge: Compilers are inherently full of deeply nested, circular object graphs (ASTs, symbol tables, type structures). Managing these in Rust without heavily leaning on unsafe blocks or running into a brick wall with the borrow checker would have taken years. Garbage Collection Alignment: Go’s built-in garbage collection mirrors JavaScript’s memory model elegantly. This allowed the team to achieve multi-threaded parallelism safely and ship a stable p

2026-07-17 原文 →
开发者

How I Built a Cute Virtual Pet Game with HTML, CSS, and JavaScript 🐹

Hi everyone! I’m a developer at the beginning of my journey, and I’ve just finished working on a small project that brought me a lot of joy: Capybara Game. It’s a cute game where you feed your capybara and improve her happiness level. You can choose between 5 different types of food or pick your own snack. If the capybara likes the snack, her happiness level rises; if she doesn't like it, the happiness level falls. Your progress is saved automatically. Keep in mind that your capybara gets hungry over time, so make sure to check back and feed her regularly! I went for a minimalist, cozy design. The interface is clean and intuitive, focusing on a relaxing user experience that lets the player focus entirely on the capybara. I built this project using HTML, CSS, and JavaScript. Hope you're interested in playing! You can do it here: Play the game here I’d love to hear your thoughts! If you have any ideas for new features or if you find any bugs, feel free to let me know in the comments.

2026-07-17 原文 →
开发者

There’s a lot of hype around perimenopause. Don’t buy it.

Perimenopause has entered the chat. Perimenopause—and its better-known relative, menopause—used to be considered taboo. Not anymore, thanks at least in part to TV doctors and social media influencers. Perhaps it’s my age, but these days, both my algorithm and my conversations with friends increasingly swing toward perimenopause. Menopause is defined as the life stage that…

2026-07-17 原文 →
AI 资讯

The risk of weather data sabotage is rising

Every morning, airline dispatchers, grid operators, and farmers around the world make decisions based on the same thing: a weather forecast. While these forecasts are something that most people glance at for two seconds, weather predictions influence major strategic decisions in many industries, with real money, livelihoods, and even actual lives at stake. Farmers use…

2026-07-17 原文 →
AI 资讯

Turning a System of Record into an AI Agent: Building MCP Tools on Azure

A practical, end-to-end walkthrough of taking a read-only slice of an enterprise source system and exposing it to an AI agent as a set of Model Context Protocol (MCP) tools — using Azure Logic Apps, API Management, and Agent Foundry. All identifiers below are placeholders; swap in your own. The goal We wanted a simple outcome: a user asks a business question in plain language and gets a straight answer — no dashboards, no field names, no training on the underlying system. That means an AI agent with safe, read-only access to a backend system of record, exposed as discrete tools the model can call. The constraints shaped every decision: Read-only. The agent can retrieve and analyze, never write. Safe. Records in most business systems contain free text (notes, subjects, descriptions) that could carry prompt-injection payloads. Tool output must be treated as data, never instructions. Composable. The agent should see many small, well-described tools — "list records", "aggregate by category", "record change history" — not one giant "query the system" tool. The architecture Five layers, one direction of flow: Agent (Agent Foundry) │ MCP (JSON-RPC over HTTP) ▼ MCP server (API Management) │ REST operation per tool ▼ API gateway (API Management) │ single POST, routed by body ▼ Tool executor (Logic App) │ OAuth token + REST calls ▼ Source system (REST API) The key design choice: one backend endpoint, many logical tools. The Logic App exposes a single HTTP trigger that accepts { "tool": "records.list", "parameters": { ... } } and routes internally. API Management then fans that single endpoint out into many named operations, and its MCP feature turns those operations into agent tools. This keeps the backend trivial to maintain while the agent still sees a rich, typed tool catalog. Step 1 — Design the tools Start from the questions , not the schema. A useful toolset usually falls into a few families: Records: list / get / search / filter for the core business entities. Activity

2026-07-17 原文 →
AI 资讯

Put Copilot OpenTelemetry Export Behind an Isolated Collector

GitHub announced enterprise-managed OpenTelemetry export for Copilot activity from VS Code and Copilot CLI on July 8, 2026. Primary source: GitHub Changelog, July 8, 2026 . Export availability is only the start. The receiving collector becomes an enterprise ingress point. This is an unexecuted operating plan; signal types, attributes, endpoint requirements, and controls must be checked against current GitHub documentation. Isolate the path managed clients -> private telemetry ingress -> dedicated OTel Collector pool -> field policy + bounded queue -> dedicated backend dataset Do not point every developer client directly at the primary observability backend. Give the collector write-only destination credentials, separate its dataset from production application telemetry, and define retention before rollout. Isolation is not anonymity. Stable user, device, organization, or repository identifiers may still be sensitive. Start with a field budget Category Initial policy Product and version Keep bounded values Operation and status Keep documented enums Timing and counts Keep numeric measures Raw prompts or generated code Drop by default File paths and repository URLs Drop or transform after review User identity Prefer scoped pseudonymous identity Free-form errors Drop raw text; keep reviewed classes These categories are recommendations, not a description of GitHub's payload. Inspect a restricted canary before naming actual keys. processors : memory_limiter : check_interval : 1s limit_mib : 512 spike_limit_mib : 128 attributes/field_budget : actions : # Illustrative keys only; replace after payload review. - key : user.email action : delete - key : file.path action : delete - key : command.arguments action : delete batch : send_batch_size : 512 timeout : 5s Verify processors against the chosen Collector distribution. A valid startup does not prove that records satisfy policy. Drill three failures Backend outage: block the exporter. Retries must be bounded, queue growth vi

2026-07-17 原文 →