Computer Science and Programming

pg_kpart is a new PostgreSQL extension (v1.0) that enforces partition key usage by rejecting queries that would scan all partitions of a partitioned table. Without a usable predicate on the partition key, such queries cause full-hierarchy scans that saturate I/O and degrade performance for all connected users. The extension turns a fragile developer convention into a database-enforced guarantee, with features including an audit mode for gradual rollout, blacklist/whitelist scoping to target specific tables, and a dedicated SQLSTATE for application-level error handling. It is open source under the PostgreSQL license and available on GitHub.

A software engineer reflects on a moment where they let Claude handle an entire bug investigation and fix end-to-end — without ever reading the Sentry issue, the code, or the diff — and only realized it after merging. Claude happened to be correct, but the workflow would have looked identical if it had been wrong. The post argues that AI tools are valuable when they sharpen your thinking, but dangerous when they become a way to skip the cognitive work entirely. The author's new rule: if you can't explain the change, you can't ship it.

Chrome 146 introduces three notable features for web developers. Scroll-triggered animations enable declarative CSS-based control of animations based on scroll position, replacing common JavaScript-based scroll detection patterns. Scoped custom element registries allow multiple custom element definitions for the same tag name within a page, preventing naming conflicts when using libraries from multiple sources. The Sanitizer API provides a built-in way to strip script-executing content from user-supplied HTML, making it easier to build XSS-free web apps — this updated version is also available in Firefox.

Xata has reduced Postgres database branching times from 20+ seconds to 1-2 seconds through a combination of custom storage (Xatastor using ZFS over NVMe-oF) and warm pools of pre-provisioned Kubernetes pods. Branches use copy-on-write storage so you only pay for diffs to the parent. With scale-to-zero billing per minute, 1,000 short-lived branches cost roughly $1. Real-world customers like AI coding agents and CI/CD preview environments are using thousands of branches per week for under $30/month. The architecture separates compute from storage, allowing volumes to be hot-connected to waiting pods in milliseconds.

PowerToys 0.100 ships with a brand-new Shortcut Guide that detects the active application and surfaces relevant shortcuts in a side pane. Command Palette gains an Extension Gallery for browsing and managing extensions, plus multi-monitor Dock support with per-display configurations. Power Display sees reliability and compatibility improvements including a new Max Compatibility Mode. ZoomIt adds webcam overlay support during recording and multi-clip appending with transitions. Under the hood, the project has been upgraded to .NET 10, the installer is 15% smaller, auto-update is more reliable, and Quick Accent and Workspaces have migrated to native Fluent-inspired WPF styling.

C# 15 introduces the `union` keyword in .NET 11 Preview 2, allowing developers to declare a closed set of case types with compiler-enforced exhaustive pattern matching. Unlike object, marker interfaces, or abstract base classes, union types don't require related types and prevent external extension. The compiler generates a struct with implicit conversions from each case type and astruct wiproperty. Switch expressions over union types are exhaustive without needing a discard arm, and adding a new case type triggers compiler warnings on incomplete switches. Custom union types are also supported via amarker inteattribute for existing libraries, including a non-boxing access pattern for performance-sensitive scenarios. Related proposals for closed hierarchies and closed enums round out a comprehensive exhaustiveness story for C#.

An evaluation of AI-generated frontend code in a real product reveals a recurring pattern: AI performs well in isolated, localized contexts but struggles to maintain consistency at the system level. The post argues that AI should be used as a candidate generator and validator rather than as the final decision-maker in code review.

A senior frontend engineer and former VP of Engineering shares a detailed retrospective on a 5-month job search in 2025-2026. Out of 60 applications, 78% were rejected without an interview, 23% ghosted entirely, and only 13 led to conversations. Key observations include the rise of AI-automated screening making it harder to pass initial filters, the blurring of job levels (junior, mid, senior, staff), and the challenge of being simultaneously over- and under-qualified when transitioning from executive leadership back to IC roles. The search ended successfully with a role at Duna, which was praised for its humane hiring process.

TamboUI is a new Java library for building terminal user interfaces (TUIs), inspired by Rust's Ratatui and frameworks like Bubbletea and Charm. Currently at version 0.3.0, it offers a modular API spanning from low-level terminal drawing to high-level components, event handling, and CSS-like styling. The library is fully compatible with GraalVM for native binary compilation, addressing Java's historical startup time and distribution concerns. It has already been adopted by projects including Quarkus, Maveniverse Pilot, and Spring Initializr TUI. The creators argue that Java's maturity, combined with modern tooling like JReleaser and JBang, makes it well-suited for CLI and TUI development in 2026.

A developer replaced six paid subscriptions (Plex Pass, UptimeRobot Pro, NextDNS, and others) totaling ~$400/year by running self-hosted alternatives on an old business laptop using Debian and Docker. The stack includes Jellyfin for media, Uptime Kuma for monitoring, Pi-hole with dnscrypt-proxy for network-wide DNS blocking, and more. The post covers both the practical benefits — built-in UPS via laptop battery, low power draw, portability — and honest trade-offs like initial setup time, occasional maintenance, and polish gaps in some open-source mobile apps compared to paid services.

C# 15 (shipping with .NET 11) introduces native union types, closing a long-standing gap in the language. Previously developers relied on workarounds like marker interfaces, abstract base classes, nullable returns, or the OneOf library to express 'this returns one of several types'. The new syntax is concise: `public union Result<T>(T, Exception);` declares a closed set of types. Implicit conversions allow direct assignment, and pattern matching gains compiler-enforced exhaustiveness checks — if a switch expression doesn't handle all union cases, the compiler warns. This means method signatures can truthfully express all possible return shapes without exceptions for control flow. The feature is currently experimental in .NET 11 Preview 4, compiled to a struct internally, and covers type unions (not yet full discriminated unions with named cases).