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StuckLoopDetection: How We Stopped an Agent Burning $12 on 47 Identical Calls
TL;DR: Most agent loops aren't model failures — they're mechanical repetitions that the model itself doesn't recognize. pydantic-deep v0.3.8 introduces StuckLoopDetection, a capability that catches three loop patterns before they waste tokens. This is post 1/3 in the "Self-Aware Agents" series. Overview of all 5 releases here. Here's the incident that made this necessary. A coding agent was working on a refactor task overnight. It hit a file with an unusual import pattern, couldn't parse the res
Your Migration’s Source of Truth: The Modernization Assessment
Introducing GitHub Copilot Modernization and diving into the assessment report as part of cloud modernization process The post Your Migration’s Source of Truth: The Modernization Assessment appeared first on .NET Blog.
ASP.NET Core 2.3 end of support announcement
ASP.NET Core 2.3 will reach end of support on April 13, 2027. Learn what this means for your applications and how to upgrade to a modern supported version of .NET. The post ASP.NET Core 2.3 end of support announcement appeared first on .NET Blog.
Next.js Middleware Deep Dive: A/B Testing and Tenant Routing
What Middleware Is For Next.js middleware runs before a request reaches your route handler—at the edge, before any rendering. It's the right place for: Authentication checks Redirects based on user state Rate limiting A/B testing assignment Geolocation-based routing Request logging Basic Setup // middleware.ts (in root, next to app/) import { NextResponse } from 'next/server'; import type { NextRequest } from 'next/server'; export function middleware(request: NextRequest) { return NextResponse.n
Implementing Dark Mode: CSS Variables, System Preference, and Persistence
Demystifying Dark Mode: The Elegant Path with CSS Variables, System Preference, and Persistence Every modern web application eventually faces the dark mode dilemma. It's no longer just a "nice-to-have"; users expect it, often as a fundamental part of their browsing experience. But how often have you seen dark mode implementations that feel clunky, suffer from a "flash of unstyled content" (FOUC), or completely disregard your OS-level preferences? It's a common struggle, and honestly, it used to
Xcode 26.5 Beta: What Developers Need to Know
Apple dropped the Xcode 26.5 beta at the end of March 2026, bundled with updated SDKs for iOS/iPadOS 26.5, macOS Tahoe 26.5, and an unusually deep Safari update. While it's not a headline release like Xcode 26.0, it carries some genuinely useful additions — especially if your app monetizes via subscriptions. Here's a practical rundown of what changed and what you should care about. StoreKit Gets Serious About Subscription Billing Plans The biggest developer-facing change in Xcode 26.5 is a set o