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Author: Erwin Wilson Ceniza Published: July 2, 2026 Tags: GraphQL | HotChocolate | BatchDataLoader | CQRS | Outbox Pattern | Apollo Federation | .NET | Architecture | EMR | API Design GraphQL Query & Mutation Architecture - A Production Deep Dive Code-first GraphQL with HotChocolate, BatchDataLoader, CQRS, and a transactional outbox pattern, with real examples from a production EMR system serving three portals from a single schema. Table of Contents Interactive Data Traversal The Architecture at 30,000 Feet Why GraphQL Won for Healthcare Data Shapes Simple Queries vs. Complex REST, The Comparison That Sold Me The Resolver Layer, Code-First, Schema-Last How GraphQL Smoothly Orchestrates the Application Services N+1 Is the Silent Killer, How BatchDataLoaders Eliminate It Mutation Architecture - CQRS + Transactional Outbox Security at the Resolver Level, Custom Middleware Attributes Type Extensions, Why I Stopped Writing DTO Mappers Projections, Filtering, Sorting, and Paging Apollo Federation, Future-Proofing the Graph GraphQL Client on Mobile, Sharing Query Logic Across Portals Why I Chose Ionic for the Patient Mobile App The Retrospective, What I'd Keep and What I'd Change A step-by-step walkthrough of how the app consumes (reads) and creates (writes) data through the services. interactive <script type="module"> const C = document.currentScript.parentElement; C.style.cssText='width:100%;font-family:system-ui,-apple-system,sans-serif'; const S = document.createElement('style'); S.textContent=` .gv *{box-sizing:border-box;margin:0;padding:0} .gv{background:var(--bg-secondary,#111);border-radius:12px;overflow:hidden;border:1px solid var(--border,#333);min-height:440px} .gv-tabs{display:flex;border-bottom:1px solid var(--border,#333);background:var(--bg-card,#1a1a1a)} .gv-tab{flex:1;padding:12px 8px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;cursor:pointer;border:none;background:none;color:var(--text-muted,#666);transition:all .2s;border

The agent brand is irrelevant; the work item is everything. I have watched teams argue about Copilot Studio versus Claude Code versus Codex as if the model decides whether their build succeeds. It does not. Your agentic development power platform effort lives or dies on one thing: whether the Azure DevOps work item you hand the agent is a machine-readable spec or a vaguely worded wish. Swap the agent all you want. If the requirement is unstructured, every agent guesses, and every guess is a different guess. This article is opinionated on exactly one point and neutral on everything else. Neutral on the tool. Ruthless about the spec. Why "AI-assisted" Power Platform dev stalls on real teams The agent guesses intent because the acceptance criteria live in a stale wiki, a Teams thread, or someone's head. That is the whole failure. Switching from one agent to another does not close the gap. The missing spec does. Prompt-by-prompt building has a second problem that shows up later and hurts more. One maker gets a working flow out of a chat session, but nobody else can reproduce it and no one can audit it. You have a solution that exists and a rationale that evaporated. For teams doing serious dynamics 365 ai development , that is not acceleration. That is a single point of failure wearing a productivity costume. Frame the cost honestly. Say a rework cycle caught in UAT runs roughly 5x the cost of the same fix at design time. Illustrative; calibrate against your own data, actuals vary. Under that assumption, the line item bleeding your budget is the improvised requirement, not the agent license. You are paying to rediscover intent three environments too late. Takeaway: if your requirement is not structured, your agent is improvising, and the brand of agent does not matter. Make the ADO work item the single source of truth An agent reads fields. It does not read the room. So the work item has to carry everything the agent needs in a shape a parser can trust every single time

📚 Series: Databricks on AWS (Part 0, prologue) The Target Architecture ← you are here Building a Databricks AI Platform on AWS RBAC with Function-Role Groups Compute Governance: Pools, Policies, Clusters The BOOTSTRAP_TIMEOUT Mystery Fixing It with AWS PrivateLink How We Structure the Terraform Before the build story, here's the destination. This is the target-state data architecture we designed the whole platform toward — the three principles that shaped every later decision, and the Unity Catalog governance model that keeps production data safe from human hands. The rest of this series is a build log: workspaces, RBAC, compute, the networking rabbit hole, the Terraform layout. But every one of those decisions was made in service of a target picture we drew first . This post is that picture — the "to-be" architecture, not the scaffolding we happened to have up on any given week. It's built on three things Databricks basically hands you if you lean into them: the Lakehouse (one store, ACID tables, no separate warehouse to sync), the Medallion architecture (raw → cleaned → integrated → business, each layer a promotion), and Unity Catalog as the single governance plane across all of it. The interesting part isn't reciting those three buzzwords — it's the specific way we wire them so that prod, dev, and analyst sandboxes never step on each other. Three principles, and everything follows Almost every concrete rule later in this series is a consequence of one of these three. 1. Nobody touches production by hand. Create, update, delete in prod data happens only through an automated, code-reviewed pipeline running as a service principal. Human accounts don't get write on prod — not analysts, not engineers, not admins. The blast radius of a bad afternoon is capped at whatever a person can do with read-only. This one principle is why the whole "promote" flow later exists. 2. Never copy production to look at it. If an analyst wants to explore the gold layer, they read it in p

Pricing is the single most powerful lever you have for growing SaaS revenue — yet most founders treat it as an afterthought. A 1% price increase can yield an 8-12% increase in operating profit, far more than acquiring the same revenue through new customers. This playbook covers the five core decisions every SaaS company must make: monetization model, value metric, tier structure, psychological pricing tactics, and pricing page optimization. Introduction: Why Pricing Is Your Most Important Growth Lever When founders think about growth, they typically reach for familiar levers: more marketing spend, bigger sales teams, viral features. But pricing is the one lever that touches every single customer interaction — and it costs nothing to change. Consider this: if you raise prices by 1% and lose 1% of customers, your net revenue still increases. The math works because the lost customers are often your least price-sensitive ones. In practice, companies that run pricing experiments typically find they can increase prices by 5-15% before seeing any meaningful impact on conversion. Yet pricing is also where most SaaS companies are at their most irrational. We underprice out of fear, copy competitors without understanding why, and avoid changes because we're afraid of customer backlash. Freemium vs Free Trial vs Paid-First Freemium Freemium offers a permanently free tier with limited features. It's a top-of-funnel machine — but it requires low marginal cost per user and a clear upgrade path. Aspect Freemium Best for Products with viral loops, network effects Conversion rate Typically 2-5% free-to-paid Risk High support cost for free users Example Slack, Notion, Canva Free Trial (Time-Limited) Time-limited trials give full access for 7-30 days, then require payment. Aspect Free Trial Best for Products with immediate value delivery Conversion rate Typically 10-25% trial-to-paid Risk Users forget to use the trial Example GitHub, Figma, Intercom The biggest mistake teams make: tre

Using AI to find authorization bugs — and to prove the ones that aren't real Draft flagship post. Safe to publish now (no undisclosed vulnerabilities). The production case study referenced at the end is withheld pending coordinated disclosure. In 2026, bug bounty programs started closing their doors. Nextcloud suspended paid rewards, citing a flood of AI-generated, low-quality reports. Mattermost ended its program. The Internet Bug Bounty cut payouts by roughly 80%. The common thread isn't that AI can't find bugs — it's that most AI-assisted "findings" are plausible but wrong , and triage teams are drowning in them. That reframes the problem. The scarce skill in 2026 isn't generating candidate vulnerabilities — a language model will hand you fifty before lunch. It's refuting the forty-nine that don't hold . The differentiator is a method whose primary output is correct negatives . Here's the method I use for source-available targets, and a worked example where the honest result was "there's no bug here." The method: fan out to find, converge to refute Two stages, two different cost tiers: Fan-out (cheap models). Split the target's authorization surface into subsystems and read each in parallel. Each reader's only job is to surface candidate broken invariants — places where an object is loaded by ID without an owner check, where a protected action might skip a re-auth gate, where two code paths authorize the same thing differently. Optimize for recall. Expect mostly false positives. Adversarial verification (an expensive, high-reasoning model). Take each candidate and try to kill it. Default to REFUTED. A candidate survives only if you can cite the specific source lines proving the guard is absent and the dangerous path is reachable and nothing upstream already blocks it. Frame every survivor as a broken invariant — a one-sentence statement of the rule the system must never violate — and classify it as core versus config-dependent. The output that matters most is the

Shared, searchable memory for every AI coding agent Discussion | Link

Introduction to Hydration and Rendering Strategies In the relentless pursuit of faster, more responsive web applications, developers have engineered a spectrum of hydration and rendering strategies . Each approach emerges as a response to specific performance bottlenecks, yet none is universally optimal. This section dissects the core mechanics of these strategies, their historical evolution, and the critical problem they aim to solve—balancing speed with practicality. The Problem: A Trade-Off Landscape At its core, the challenge is mechanical : how to deliver content to the user’s browser with minimal latency while maintaining interactivity. Traditional rendering methods (e.g., server-side rendering) prioritize initial load speed but often defer interactivity until JavaScript execution. Client-side rendering, conversely, delays the first paint but ensures seamless interactions post-hydration. The tension between these extremes has birthed hybrid strategies like incremental hydration and islands architecture , each addressing specific failure points in the rendering pipeline. Key Mechanisms Driving Strategy Evolution Advancements in Web Technologies : New APIs (e.g., Web Components, Streaming SSR) enable finer-grained control over rendering. For instance, streaming SSR reduces Time-to-First-Byte (TTFB) by sending HTML in chunks, but risks breaking the causal chain of DOM hydration if not synchronized with client-side scripts. User Expectations : Sub-second load times are no longer aspirational but expected. This pressure deforms traditional workflows, pushing developers toward pre-rendering or static site generation (SSG), which trade dynamic flexibility for speed by offloading rendering to build time. Competitive Pressure : Performance is a zero-sum game. Companies adopt strategies like partial hydration (hydrating only interactive components) to minimize JavaScript payload, but this risks breaking interactivity if the hydration boundary is misaligned with user int

We’ve all been there. You get a notification from your smartwatch saying your heart rate has been a bit funky, or your blood oxygen is dipping. Usually, we ignore it until it becomes a problem. But what if your personal AI was looking out for you? 🤖 In this tutorial, we are building an Autonomous Health Agent . This isn't just a notification bot; it's a proactive system that uses Playwright browser automation , OpenAI Function Calling , and Python to monitor your health trends and—if things look suspicious for three days straight—literally opens a browser and books a doctor's appointment for you. By leveraging Autonomous AI Agents and Playwright automation , we are moving from "Passive Monitoring" to "Active Intervention." This is the future of Health Tech Automation . 🏗 The Architecture Before we dive into the code, let's look at how the data flows from a "scary heart rate" to a "confirmed appointment." graph TD A[Wearable Data/Health Logs] --> B{3-Day Anomaly Check} B -- Normal --> C[Stay Healthy! 🟢] B -- Abnormal --> D[Trigger AI Agent 🤖] D --> E[OpenAI Function Calling] E --> F[Playwright Browser Automation] F --> G[Hospital Booking Platform] G --> H[Appointment Confirmation 🏥] H --> I[Notify User via SMS/Email] 🛠 Prerequisites To follow along, you’ll need: Python 3.10+ Playwright : The king of modern browser automation. OpenAI API Key : For the "brain" of our agent. A healthy dose of curiosity! 🥑 pip install playwright openai pydantic playwright install chromium 👨‍💻 Step 1: Defining the "Brain" (OpenAI Function Calling) We don't want the LLM to just "talk" about booking an appointment; we want it to actually execute the action. We'll use OpenAI's Function Calling to bridge the gap between text and code. import json from openai import OpenAI client = OpenAI () # Define the tool our agent can use tools = [ { " type " : " function " , " function " : { " name " : " book_doctor_appointment " , " description " : " Books a medical appointment based on department and s

Video AI systems consistently fail to track what happens when the camera looks away: when a scene pans away from an object in motion and returns, current models re-render the object in its original position rather than showing the logical result of off-screen change. Scaling to more parameters makes this failure worse, not better, according to WRBench , a new benchmark that tests what researchers call "world model reliability." The benchmark presents AI video systems with scenes where something happens off-screen — the camera pans away while an object is in motion, or while a light changes, or while an open door should stay open — then pans back to see what the system believes should have happened. A system that genuinely models the world would track what occurred during the off-screen interval. Current systems mostly don't. Key facts What: A new benchmark tests whether video AI systems can track what happens to parts of a scene the camera isn't currently showing. Across 23 models, the answer is mostly no — and making the models larger made the problem worse, not better. When: 2026-06-19 Primary source: read the source (arXiv 2606.20545) The benchmark covers twenty-three different video generation models and nearly ten thousand video clips across six categories of off-screen change, each designed to test a different aspect of world continuity: objects in motion, light sources changing, object states such as open or closed doors, and several others. This gives a comprehensive picture rather than a single narrow test. The most striking finding is the scaling result. The researchers tested one of the more capable video generation systems at two different sizes: a smaller version and one with more than ten times as many parameters. More parameters didn't help. Scaling made the off-screen tracking problem measurably worse. The larger model produced more realistic-looking frames, but it was less accurate about what should have happened to the parts of the scene it wasn't

Loop Engineering — เมื่อการ Prompt Agent ด้วยมือไม่พออีกต่อไป แล้ว Programmer ต้องออกแบบ Loop แทน โดย Nokka (นก-กา) | 1 กรกฎาคม 2026 TL;DR — สำหรับคนที่รีบ กลางเดือนมิถุนายน 2026 ที่ผ่านมา วงการ AI developer สั่นสะเทือนด้วยประโยค 6 คำจาก Peter Steinberger ผู้สร้าง OpenClaw: "You shouldn't be prompting coding agents anymore. You should be designing loops that prompt your agents." ประโยคนี้มียอดวิว 8 ล้านครั้งในวันเดียว และจุดกระแส "Loop Engineering" ที่กลายเป็น buzzword ร้อนที่สุดของเดือน Loop Engineering คือการเปลี่ยนจากการนั่ง Prompt Agent ทีละคำสั่ง มาเป็นการเขียน Loop (โปรแกรม) ที่ทำหน้าที่ Prompt Agent แทนคุณ โดย Loop จะเป็นคนเลือกงานต่อไป, ส่งให้ Agent, ตรวจสอบผล, ตัดสินใจว่าจะทำต่อหรือหยุด คุณไม่ได้เป็นคนขับ Agent อีกต่อไป — คุณเป็นคนออกแบบระบบที่ขับ Agent 1. Loop Engineering คืออะไร? เกิดมาจากไหน? เรื่องนี้เริ่มต้นจาก Boris Cherny ผู้สร้าง Claude Code พูดบนเวที Acquired Unplugged ต้นเดือนมิถุนายน 2026 ว่า: "I don't prompt Claude anymore. I have loops that are running. They're the ones that are prompting Claude and figuring out what to do. My job is to write loops." สองวันต่อมา Peter Steinberger โพสต์บน X ว่า "You shouldn't be prompting coding agents anymore. You should be designing loops that prompt your agents." โพสต์นี้มียอดวิว 8 ล้านครั้ง [1] หลังจากนั้น Addy Osmani (Google Engineer, O'Reilly author) เขียนบทความ "Loop Engineering" บน O'Reilly Radar ให้คำจำกัดความว่า: "Loop engineering is replacing yourself as the person who prompts the agent." [2] และ @0xCodez ก็รวบรวมเป็น 14-step roadmap จาก "prompter" สู่ "loop designer" [3] ในมุมมองของผม Loop Engineering ไม่ใช่ buzzword ธรรมดา แต่มันคือการเปลี่ยน abstraction layer ของการทำงานกับ AI เหมือนกับที่เราเปลี่ยนจาก Assembly → High-level language หรือจาก Bare metal → Cloud แต่ก็ต้องยอมรับว่า Loop Engineering ยังเป็นแนวคิดใหม่ และยังไม่มี standard practice ที่ชัดเจน สิ่งที่ใช้ได้วันนี้อาจเปลี่ยนไปใน 3 เดือน 2. ทำไมต้อง Loop Engineering? ลองนึกภาพการทำงานกับ AI coding agent แบบเดิม: คุณพิมพ์ prompt → รอ → อ่าน dif

Apple is readying several new iPad Pro tablets, and a budget-friendly MacBook Pro, reports suggest.

Quick, creative video subtitling with direct canvas control Discussion | Link

Fourth of July weekend is the last great grill and griddle sale of the summer, including $250 off my favorite pellet smoker.

Next spring could be a fiesta of new iPads, MacBooks and iPhones.

The company has grown rapidly by acquiring and revamping last-generation tech brands like AOL, Eventbrite, Evernote, Meetup, and Vimeo.

Apple is working on a "revamped" version of its entry-level MacBook Pro that it could launch as soon as the first half of 2027, Bloomberg reports. The company is also testing four new iPad Pros that are set to launch in the spring with a focus on "internal improvements." The updated MacBook Pro, which will […]

The co-founders of Bending Spoons, the Italian company quietly buying beloved, ailing Internet brands, learned big lessons from their own startup's failure.

Cody Spencer, the co-owner of the small games retail chain Pink Gorilla Games, put it well when I asked about the impact of Sony's recent announcement that it will stop making discs for new games starting January 2028. "It's sad to see. This decision is only a negative for gamers. We're losing the ability to […]

Meta says usernames improve privacy, but critics question whether its safeguards can prevent impersonation.

GitHub热门项目 | 🚀 A real-time monitoring dashboard for Claude Code, built with SQLite3, Node.js, Express, React, Vite, TailwindCSS, and WebSockets. It tracks sessions, agent activity, tool usage, and subagent orchestration, providing live analytics, a Kanban status board, status notifications, a cute buddy, and an interactive web UI/MacOS/Windows native app. | Stars: 734 | 162 stars this week | 语言: TypeScript