标签：#an

When an internet outage hits, users immediately turn to their phones to find out if it's just them or a widespread network issue. Because they are often relying on spotty cellular data, any tracking site needs to load instantly and deliver highly localized information. I recently launched CoxOutage.us to map and track Cox Communications disruptions. Here is a breakdown of the technical and SEO strategies I used to build it. Performance & Traffic Handling Outage trackers face a unique challenge: they get zero traffic when things are fine, and massive, sudden spikes the minute a service goes down. Aggressive Caching: I implemented LiteSpeed Cache combined with Memcached for object caching. This ensures that database queries are kept to an absolute minimum when a sudden wave of users hits the site. Edge Delivery: Everything sits behind Cloudflare for DNS management and edge-level caching, ensuring the server (hosted via InterServer) doesn't get overwhelmed during regional outages. Scalable SEO & Routing Architecture The biggest hurdle was capturing local search intent accurately. Hyper-Specific URL Slugs: Initially, you might think to use a simple routing structure like /los-angeles . However, I found that using full keyword slugs—such as /cox-outage-los-angeles —significantly boosted visibility and search performance. Automated Indexing & Schema: I utilized the Google Indexing API to push new city landing pages instantly. Paired with Rank Math, the site generates precise schema markup so search engines understand the real-time nature of the status updates. Looking Forward Right now, the focus is on scaling out the localized landing pages and refining the automated reporting pipeline. If you have experience building high-traffic, real-time alert systems or handling sudden traffic spikes, I’d love to hear your approach. Check out the live project here: CoxOutage.us Feedback and suggestions are always welcome!

A Technical PM's journey from frustration to shipping a solo Android app As a Technical Project Manager, I track time constantly. Client hours, project phases, billable work. It's part of the job. But every time tracker I tried left me frustrated. Toggl is powerful — too powerful. Every time I opened it, I had to navigate through workspaces, projects, tags, and integrations I'd never use. Clockify felt the same. Harvest was built for teams, not for someone who just wants to know where their day went. And don't get me started on the design. Most of these apps look like they were built in 2012 and never updated. So I did what any slightly obsessive PM would do: I built my own. The Problem I Was Actually Solving It wasn't that existing trackers lacked features. It was that they had too many. Every morning I'd open an app, get overwhelmed by options, and either spend 2 minutes setting up a timer correctly or just give up and track nothing. By the end of the week, I had no idea where my billable hours went — which meant I was probably undercharging clients. I wanted one thing: tap a button, start tracking. That's it. Building Tempo as a Non-Developer Here's the part that still surprises me: I built Tempo without writing a single line of code. As a Technical PM, I understand systems, workflows, and user experience — but I'm not a developer. I used AI tools to go from idea to a fully functional Android app in 2–3 months. The process wasn't always smooth. There were bugs, confusing UX decisions, and moments where I questioned whether I was building something anyone else would actually use. But I kept coming back to the same question: would I use this every day? And the answer was always yes. What Tempo Does (and Doesn't Do) Tempo is deliberately minimal: One tap to start tracking **— no setup, no forms, no friction **Billable vs non-billable toggle — know exactly what to invoice Daily & weekly reports — see where your time actually goes Custom projects with icons and colors

1. Introduction Excel is much more than a spreadsheet for entering numbers. It can be used as a data-analysis tool that helps analysts inspect, validate, filter, summarize, and prepare raw data before deeper analysis begins. In typical analytics, the quality of the final work depends heavily on the quality of the data used; therefore, data cleaning is not an optional step—it is the foundation of effective data analysis. This article demonstrates key Week 1 Excel concepts _using an employee dataset containing _employee IDs, names, departments, gender, marital status, hire dates, salaries, educational level, performance score among others. The raw file intentionally contains common data-quality issues: inconsistent capitalization on the First and Last names, blank records, duplicate employee records, varying department names, currency and dates that need review. By working through these issues, the article shows how Excel’s formatting tools, text functions, filters, conditional formatting, numerical functions, conditional summaries, and date functions can turn a messy workbook into an analysis-ready dataset. 2. Why Data Cleaning Matters Data cleaning is more than just about removing errors. By standardizing formats and categories, we make datasets more transparent, usable, and valuable for management analysis and reporting purposes. Data analysis is simple – garbage in, garbage out. A dashboard or prediction can appear professional, but can be misleading if the underlying data has duplicates, blank values, inconsistent categories or incorrectly formatted text and dates. For example, “IT” “I.T.” and “Information Tech” can be viewed as different department values if naming is not standardized. Duplication of an employee ID can inflate employee counts and department totals. A blank performance score might mean that something is missing and should be looked into and dates saved as text cannot be reliably used in calculations such as employee tenure checks. A good practice

It's the week before vizcrush goes public, and I have two files open side by side. On the left, the launch copy: the JS core beats the most popular npm downsampling package by 32×, "and WASM adds another 5-10x on top." On the right, the repo's own benchmark control run: wasm/js ≈ 1.00× . One million points, same algorithm, same machine. Parity. I go looking for the measurements behind the claim. Half of it holds up: the 32× JS comparison has a result file (1.72ms against 55.52ms, real). The claimed additional 5-10× from WASM has nothing behind it, and the repo's own control run contradicts it. That afternoon set the shape of the whole launch: before anything shipped, every performance claim would either get a measurement behind it or get deleted. Three beliefs didn't survive. Each one got a public retraction, written up as an ADR in the repo. vizcrush is a set of data primitives for browser visualization (downsampling, binning, spatial indexing, streaming sketches), written in Rust, compiled to WebAssembly, with a pure-JS core behind the same API as a fallback and explicitly selectable backend. It went open source this week: the repo and the book are public, and all 11 packages are live on npm. npm install @vizcrush/core @vizcrush/downsample This is a launch story about turning benchmark results into product policy: claims, documentation, and WebGPU policy follow the measurements, while WASM dispatch stays availability-based pending further investigation. One scope note before the data. Every result here is workload-specific: LTTB (Largest-Triangle-Three-Buckets, the downsampling algorithm that picks, per bucket, the point that best preserves the visual shape of the line) is downsampling, the stats kernel is a reduction, and bin2d is histogramming. Which backend wins is algorithm- and engine-dependent, so none of what follows is a library-wide WASM-versus-JS verdict. It is three specific workloads measured on specific engines, with the claims and documentation follo

This latest lawsuit is particularly broad and homes in on accusations of illegal piracy.

A technology problem rarely stays a technology problem for very long. A platform may need to scale. A product may need to move faster. An organisation may want to introduce AI, modernise an ageing estate, improve customer experience or launch something entirely new. The first instinct is usually to look at the technology itself. Which architecture should change? Which platform should we buy? Which team should build it? Which tools should we introduce? Those questions matter. But they are often not the questions that determine the outcome. At Cralgo, one pattern keeps appearing across technology work: the harder part is frequently the system around the technology. The problem behind the problem Consider a programme that appears to have an execution issue. Delivery is slow. Priorities keep changing. Teams disagree. Decisions are repeatedly reopened. The roadmap keeps moving. It is easy to conclude that the engineering team needs to become faster. But look closer and the constraint may be somewhere else: ownership is unclear; priorities are not genuinely ordered; product and technology are working from different assumptions; architecture decisions are being made without business context; teams are executing tasks without understanding the judgement behind them; governance exists, but only as reporting; critical decisions remain dependent on a small number of people. None of these are purely technical problems. They are questions of judgement, ownership, capability, sequencing and governance. Technology simply makes them visible. Better technology does not automatically create better execution Organisations understandably invest heavily in platforms, cloud, data, automation and AI. But technology increases capability only when the organisation around it can use that capability well. A new platform cannot decide what should be prioritised. A new operating model diagram cannot create ownership. A dashboard cannot replace judgement. AI cannot resolve ambiguity that an orga

Protecting data that must stay secret ten years from now is a problem for today : an adversary can capture your encrypted traffic now and decrypt it once quantum capability exists ( harvest now, decrypt later ). Quipu is a free hybrid post-quantum encryption library for data at rest: it combines proven classical cryptography with the new kind, so that it only breaks if both fall at once. Pure Rust, and why Quipu started out aiming at several languages: a Rust core with a C ABI on top and bindings for Python, Node and Go. It worked, but the lesson was clear: maintaining a stable C interface plus four bindings, each with its own packaging and interoperability tests, was complexity that did not pay for itself against the real goal — protecting data at rest — and it widened the attack surface with unsafe we did not want. Today Quipu is pure Rust : memory safe, no garbage collector, no first-party unsafe . And for people who do not write Rust, it ships as a native Python wheel via PyO3 — the surface that non-Rust users actually need. One codebase, one thing to audit. It is the same philosophy that guides the rest: where good cryptography exists, reuse it; simplicity is a security decision, not a convenience. Installation cargo add quipu # Rust pip install quipu-crypto # Python (native wheel, PyO3) Encrypt and decrypt in Python import quipu # Symmetric, with a passphrase blob = quipu . encrypt_stream ( b " sensitive data " , " my-passphrase " ) assert quipu . decrypt_stream ( blob , " my-passphrase " ) == b " sensitive data " # Post-quantum, for a recipient pub , sec = quipu . generate_keypair () # X25519 + ML-KEM-1024 c = quipu . encode_to_recipient ( b " secret " , pub ) assert quipu . decode_as_recipient ( c , sec ) == b " secret " What is underneath Encryption: XChaCha20-Poly1305 (authenticated AEAD). Key derivation: Argon2id (brute-force resistant) + HKDF. Post-quantum: X25519 + ML-KEM-1024 for keys; Ed25519 + ML-DSA-87 for signatures. Security level: NIST category 5

Most performance optimization focuses on making each operation faster. HKD Kernel approaches a different question: What if most of those operations did not need to execute at all? I’ve been working on HKD Kernel, a native C library for exact sparse and incremental computation. The target workload looks like this: A large computation has already been evaluated. Only a small subset of the inputs changes. The dependency structure tells us which results can actually change. HKD recomputes those affected regions instead of repeating the entire calculation. The important word is exact. The optimized result must equal the result of full recomputation. What the benchmark measures The repository contains reproducible benchmarks comparing full recomputation with the HKD incremental path. Across the benchmark suite currently documented in the repository, the measured mean speedup is roughly 18,000x. That requires an important qualification: This does not mean HKD makes arbitrary programs 18,000x faster. It means that on workloads with sparse changes and reusable state, avoiding redundant computation can produce extremely large reductions in work. That distinction is important enough that I built the repository around reproducibility rather than a black-box benchmark claim. What HKD Kernel is not HKD Kernel: does not replace the macOS XNU kernel does not modify CPU microcode does not disable SIP does not change processor ALU hardware It is a user-space native computation library. Where I think this model is useful The workloads I’m most interested in include: dependency graphs incremental build systems large simulations with sparse updates optimization systems financial/risk recomputation logistics and scheduling cached numerical pipelines The real question is not “how fast is HKD?” It is: How much of your current computation is being repeated even though the inputs affecting it never changed? I’d especially like developers to try to break the benchmark assumptions or suggest w

Vijay Pande — who left a16z's roughly $4 billion biotech practice last year to start the much smaller, AI-native VZVC — talks about why biology is finally shifting from a "discovery" science to an "engineering" one, why clinical trials are still brutally expensive, and why he thinks open, shared datasets (not walled-off ones) are what will actually let AI transform medicine.

If you're wondering if CarPlay works over Wi-Fi or Bluetooth, the answer is yes. It uses both at different times.

Cloudflare KV for Session Caching in Multi-Tenant FastAPI: Reducing PostgreSQL Load Without Redis Complexity Every SaaS I've built hits the same wall: session validation on every request hammers PostgreSQL. You add Redis, suddenly you're managing another service, debugging cache invalidation, and paying for redundancy you don't need. Then I discovered Cloudflare KV sits between your users and origin server. It's not a replacement for PostgreSQL—it's a read cache positioned at the edge that auto-syncs on writes. For multi-tenant session and permission data, this eliminates 60–80% of auth-related database queries without the operational complexity of Redis. This is the approach I use in CitizenApp. Here's why it works, how to implement it, and where I nearly broke production. Why Cloudflare KV Beats Redis for Session Caching Redis requires: A separate service deployment (Render, AWS ElastiCache) Connection pooling logic in your app Cache invalidation strategies you'll get wrong Monitoring for memory leaks and eviction Cost that scales with your hot data size Cloudflare KV requires: A binding in your edge worker (one line of config) Simple key-value storage at 200+ edge locations Automatic TTL expiration Zero operational overhead—Cloudflare manages it Here's my honest take: I prefer KV because I don't have to think about it. My workers validate JWT tokens and fetch session data from KV before even routing to my FastAPI origin. Cache misses flow to PostgreSQL and write back to KV. No connection pools. No eviction policies. No debugging Redis memory fragmentation at 3 AM. The tradeoff? KV is slower than in-memory Redis (ms vs microseconds), but for session lookups happening 200+ times per second per user at global scale, edge-cached responses beat origin-fetched ones every time. Architecture: Edge Validation + Origin Sync Your flow looks like this: Request hits Cloudflare Worker Worker checks KV for session + permissions (hit = serve immediately) KV miss → fetch from Fas

By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you can load a CSV into pandas, find out in twenty seconds what type every column became, stop the identifier columns losing their leading zeros, get dates read the way they were written, and turn a money column that arrived as text into numbers. It is about twenty-five minutes, and every output below was produced by running the code. Here is what to do today, the moment after you first load a file. Run df.dtypes . Not df.head() , which shows you what the values look like, but dtypes , which shows you what they are. A column of identifiers that says int64 has already lost its leading zeros, and a money column that says object or str is text that will refuse to add up. The short version: read_csv reads characters and guesses a type per column. The guess is usually right, it is silent when it is wrong, and four arguments replace guessing with instruction. The same characters becoming two different values is the idea, so it gets the picture. The original carries a diagram here. In words: On the left, a strip of five small square boxes holds one character each, reading zero, eight, zero, five, three, as the characters appear in the file. Two arrows branch out from that strip. The upper arrow leads to a strip of five boxes in which the first box is empty, crossed through and outlined in amber, while the remaining four hold eight, zero, five and three; the leading character has been discarded. The lower arrow leads to a strip of five boxes holding zero, eight, zero, five and three, identical to the original, outlined in blue. Both destinations came from the same source strip, and only one of them still contains everything the file did. Every output on this page is real. Run on pandas 3.0.2 against a small CSV built to contain the four problems every real export has: an identifier with leading zeros, ambiguous dates, a text marker for missing values, and money with a thousands separator. If

By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you can turn transactions into a monthly series, add period-on-period change and a cumulative total, get a share-of-total column, smooth a noisy line, and run all of it separately for every group. It is about twenty-five minutes, and every number below came out of running the code. Here is what to do today, on the series you already have. Count its rows against the number of periods in your date range. If your data covers January to May and the series has four rows, a period produced nothing, it never became a row, and every change figure after the gap is comparing the wrong pair. The short version: pct_change() divides each value by the one in the row above; cumsum() adds everything up to and including the current row. Both trust the rows you gave them to be the periods you meant. What happens when the previous period is zero is the idea, so it gets the picture. The original carries a diagram here. In words: Three bar positions stand on a baseline, labelled Mar, Apr and May. The March position holds a tall bar and the May position holds a slightly shorter tall bar. The April position holds no bar at all; there is only a short flat mark sitting on the baseline where a bar would start, drawn in amber to show a value of zero. An arc runs from the top of the March bar down to the April mark, and the figure minus one hundred percent is printed on it, which is a perfectly ordinary answer. A second arc runs from the April mark up to the top of the May bar, and the symbol printed on that one is not a percentage at all but the sideways figure eight that means infinity. The picture shows that a fall to nothing has an answer and a rise from nothing does not. Every number on this page is real. The sixteen-row orders table used across this whole set of guides, run in pandas 3.0.2. It runs from 5 January to 25 May 2026 and contains no April orders at all, which is not staged for this page; it is

By Michael Nocito , data analyst · Published August 8, 2026 By the end of this page you can attach columns from one DataFrame to another on a shared key, choose the right how for the question, see at a glance which rows failed to match, and catch the failure that quietly inflates every total in the frame. It is about twenty-five minutes, and every output below was produced by running the code. Here is what to do today, on every merge you write. Print the row count immediately before and immediately after it. A left merge must not change the row count, and if it did, the right-hand table has the key more than once and your totals have just gone up. The short version: merge pairs rows from two frames wherever their keys match, and the number of rows that come out depends on how many times each key appears on each side. One key twice on the right is the idea, so it gets the picture. The original carries a diagram here. In words: On the left a single row is drawn as a wide box, holding the key Desk and the value 880. To its right stands a small lookup table with two rows, and both of those rows carry the same key, Desk. Two lines run from the single left-hand row, one to each of the two matching lookup rows, so the one row is paired twice. On the far right the result is drawn as two separate output rows, and both of them contain Desk and 880; the value 880 is ringed in amber in each of them to show that it is the same original figure appearing twice. One row went in and two came out, without anything being added to the left-hand table. Every output on this page is real. Sixteen orders totalling 9,890 and a three-row product table, the same tables used across this whole set of guides, merged in pandas 3.0.2 with the results copied back. If you know SQL joins , this is the same operation with different words, and the two failure modes are identical. 1. merge in one line Two frames, one shared column, one call. orders.merge(products, on="product", how="left") order_id prod

If you've tried an "agentic" AI coding tool recently, there's a good chance it asked you to switch editors entirely. Google's own agent-first IDE, Antigravity, launched in November 2025 with exactly that trade-off: full agentic power, but only inside its own dedicated desktop application. That trade-off just went away. Google has shipped Antigravity extensions for VS Code, Visual Studio, JetBrains, and Zed , bringing the same agent, the same review workflow, and the same account into the editor you've already spent years configuring exactly the way you like it. This post walks through what the VS Code extension actually is, how it fits into Antigravity's broader architecture, how to install and configure it, and most importantly; how its permission system keeps an agent that can read files, run terminal commands, and drive a real browser from doing anything you haven't explicitly allowed. By the end of this article, you will be able to: Explain how the extension relates to the full Antigravity 2.0 desktop app and the agy CLI Install and authenticate the extension inside VS Code Work through the agent side panel, implementation plans, and walkthroughs Configure the permission engine so the agent only does what you approve Lock down its browser subagent so it never touches your personal Chrome data New to Antigravity generally? Start with Google's own primer: Antigravity 2.0 Overview Prerequisites To follow along hands-on, you'll need: VS Code version 1.90 or later, on macOS, Linux, or Windows A Google Account on any Antigravity plan (the free tier is enough), or an enterprise account enabled for Gemini Enterprise About five minutes for the first-time sign-in and backend install You can also read this purely as an architecture and workflow walkthrough; every step is explained, not just shown. 1. Where the Extension Fits in Antigravity's Architecture It helps to know there are actually three doors into the same house: [ Antigravity 2.0 ] ── the full desktop app, a dedi

Plus: Hackers target over 100 US water systems, ICE puts in an order for robot dogs, and you’ll never guess what “MrChildPorn” was arrested for.

Astronomers will test equipment that, if it’s successful, will one day be crucial for discovering Earthlike planets.

Installing a large language model on your personal computer gives you a handy digital assistant that won’t compromise your data privacy.

AI agents are getting very good at doing things . They can search databases, call APIs, modify tickets, draft code, update records, trigger workflows, and interact with production systems. And that changes the engineering problem. When an LLM only generates text, a bad answer is usually just that: a bad answer. When an LLM can take an action, a bad answer can become a bad state change . So the most important question in agent architecture is no longer: Can the model figure out what to do? It is: Who decides whether the model should actually be allowed to do it? Those are two very different responsibilities. And I think one of the most useful principles for production AI agents is surprisingly simple: Use the model to reason. Don’t automatically give it authority to execute. The architecture that works beautifully in demos A lot of agent demos reduce to something like this: User → LLM → Tool → Action The model receives a request. It reasons about what should happen. It selects a tool. It generates the parameters. The tool executes. That is an incredibly productive abstraction. It is also a risky one when the tool can affect something real. The same probabilistic system is effectively doing two jobs: deciding what it believes should happen; authorizing that thing to happen. You can try to fix this with prompting: Always ask for confirmation before making important changes. But that is still an instruction. It is not a security boundary. The difference becomes clearer when you compare the two architectures. %%{init: {'theme':'base','themeVariables': { 'primaryTextColor':'#111827', 'secondaryTextColor':'#111827', 'tertiaryTextColor':'#111827', 'textColor':'#111827', 'edgeLabelBackground':'#FFFFFF', 'lineColor':'#4B5563' }}}%% flowchart LR subgraph BAD["❌ Demo-Style Agent"] direction LR A["User"] --> B["🧠 LLM"] B --> C["🔧 Tool"] C --> D["💥 Real-World Action"] end subgraph GOOD["✅ Production-Oriented Agent"] direction LR E["User"] --> F["🔎 Evidence"] F --> G["🧠 LLM"] G --

Psychedelics are often associated with disconnecting from reality, but a recent neuroimaging study found that psilocybin can actually make our brain activity more connected to the world around us.