Computer Science and Programming

BYD executive Stella Li claims the company will have a solid-state battery model next year, the earliest date any automaker has cited, though no model, sales plan, or confirmation was given. Toyota targets 2027-2028, Honda and Mercedes around 2030, and LG Energy Solution estimates roughly a decade away for cars. Mercedes and VW's PowerCo are partnered with US-based Factorial Energy, while Taiwan's ProLogium is building a plant in Dunkirk, France. CarNewsChina speculates, via unconfirmed sources, that BYD's car will be a Yangwang flagship rivaling Rolls-Royce. Hyundai's research chief doubts the raw material cost problem will be solved within five years.

G# is a new open-source, Go-inspired programming language that compiles to .NET, targeting systems programming and mobile applications while interoperating with existing .NET libraries and NuGet packages. It supports .NET 8 through 10 (10 preferred), offers a VS Code extension with language server support, and blends .NET-style async/await with Go-like fire-and-forget concurrency and channels via an optional extensions package. The language uses packages, funcs, structs and classes, and features like if let and for in for concise null checks and iteration. Beyond general development, it's positioned as an educational language and a lightweight candidate for WebAssembly and Hyperlight microVM scenarios, useful for developers moving from Swift or Kotlin into the .NET ecosystem.

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.

A comprehensive tutorial walks through building a REST API with Solon, an independent enterprise Java framework, starting from a basic greeting endpoint and extending it into a task management API backed by H2 and MyBatis-Flex. It covers Solon's architecture, dependency injection, configuration layering, HTTP handling, and testing with solon-test, drawing comparisons to Spring Boot concepts throughout. The example uses Solon 4.1.0, Java 21, Maven 3.9.16, and MyBatis-Flex 1.11.8, with full source code available on GitHub.

A detailed guide to the strangler fig pattern for modernizing legacy systems capability by capability rather than through a big-bang rewrite. It covers how the facade layer routes traffic, the tradeoffs between dual writes and change data capture for data ownership during migration overlap, how to choose which capability to strangle first, why migrations commonly stall around 80% completion, the real infrastructure and reconciliation costs of running two systems in parallel, when the pattern is a poor fit, and how to define when a migration is actually finished versus just feature-complete

A .NET blogger reflects on four years and 210 weekly issues of his newsletter, distilling four lessons: consistency beats brilliance, teaching accelerates learning, fundamentals (modular monoliths, domain-driven business rules, API contracts, idempotency, outbox pattern) outlast frameworks, and audience feedback sharpens thinking. He also shares his bullish stance on AI coding agents, arguing fundamentals become the review checklist for judging AI-generated code, and teases more AI-focused content ahead

A developer recounts a bug where a billing report showed bills from the wrong day due to a timezone mismatch: the frontend sent plain calendar dates (e.g. '2026-01-01') without timezone context, and the backend converted them directly to JavaScript Date objects while MongoDB stored timestamps in UTC. The core lesson is that a calendar date is not the same as a timestamp - a date needs a timezone to be meaningful, and query boundaries should be computed in the user's local timezone before converting to UTC. Also covers using half-open [start, end) ranges to avoid excluding the last day of a range, and a mental model separating calendar dates, timestamps, and local date/time.

React 19.3 is now available on npm, stabilizing two previously experimental APIs: View Transitions and Fragment Refs. The new <ViewTransition> component animates elements entering, exiting, moving, or resizing using the browser's View Transition API, with support for custom animations via addTransitionType and integration with Suspense for coordinated loading of fallbacks, images, and fonts. Fragment Refs let developers attach DOM behaviors (event listeners, focus management, IntersectionObserver/ResizeObserver) to a group of sibling elements without needing a wrapper div, by passing a ref to a Fragment. React DOM adds a new browser() API to opt components out of server-side rendering when they depend on browser-only APIs, plus Trusted Types support to prevent DOM-based XSS. Server Components can now render Context directly from a 'use client' module without a wrapper Provider. The release also includes numerous other changelog items and bug fixes across react, react-dom, and react-server

Trendyol's product content team details a phased, zero-downtime migration of five 'helper bucket' datasets (2.24 billion documents across two clusters) from Couchbase to PostgreSQL to cut infrastructure costs while preserving read performance. The strategy combined dual-writes via Kafka consumers, a custom CDC-based migrator tool for historical backfill, and feature-flagged cutover of read traffic. Key production challenges included a mysterious TPS spike traced to PgBouncer's server_reset_query_always setting, a connection-limit incident causing a primary node failover, and a hidden scaling issue where PgBouncer's own horizontal autoscaling multiplied backend connections beyond expectations (20 pods × 150 default_pool_size = 3000 potential connections). Final production benchmarks showed stable P50 latency and only a brief P99 spike (200ms to 400ms) under peak load, validating the migration.

Bun v1.4.2 patches two regressions introduced in v1.4.1: a bun build variable name collision that broke Elysia imports with a SyntaxError, and an AsyncLocalStorage memory leak affecting timers and promises created inside store.exit() or nested store.run(). It also fixes a worker_threads 'online' event ordering bug that caused @discordjs/ws to hang, adds CMYK/YCCK JPEG decoding support to Bun.Image, pulls in roughly 350 upstream WebKit/JavaScriptCore commits fixing Intl, TypedArray, and Proxy correctness issues, and resolves several crash and hang bugs including a rare JIT crash, a musl GC crash, a bun install panic, and a double-close file descriptor bug on Linux

Tailscale is expanding from a network you configure into a platform you build with and on. The tsnet Go library lets applications embed Tailscale connectivity directly, giving each app its own tailnet identity, MagicDNS name, and automatic TLS certificates without opening ports or managing proxies. A tailscale-rs library is in pre-alpha, promising bindings for Rust, Python, Elixir, and C. On the automation side, the Tailnets API lets teams provision isolated tailnets on demand for per-customer or per-test isolation, and the same APIs power a new admin console so ACL updates, key rotation, and provisioning can be scripted rather than clicked. A new Declarative Node Sharing feature turns manual cross-tailnet sharing into GitOps-managed policy, currently available via waitlist.

Svelte 5.57 adds new SvelteMap methods (getOrInsert, getOrInsertComputed), a createContext has function, select defaultValue support, and new svelte/server type exports. SvelteKit 3's next release candidate continues iterating with several breaking changes including reworked cross-page form actions, split Vite plugin hooks, defineParams relocation, and route filtering for test files. The sv CLI replaces its mcp add-on with a broader ai-tools add-on and ships a task-based sveltekit-3 migration command that rewrites $lib imports to #lib and bumps dependencies. The roundup also covers stable SvelteKit 2.x patches, language tools updates, and a community showcase of Svelte apps, UI libraries, and dev tools.

NestJS 12 comes with some solid updates, no doubt about that. But if you haven’t looked at the new observability features yet, it is worth a close look.
Setting up APM tools in Node has always felt a bit clunky. Most agents sit outside the app, monkey-patching HTTP drivers and database packages to guess what is happening under the hood. It works, but you usually lose framework context along the way.
Full Article : https://lnkd.in/p/gP53bYmC

PostgreSQL 19 introduces four new system views for observability: pg_stat_lock provides cumulative cluster-wide lock contention statistics per lock type, including a fastpath_exceeded counter useful for partition-heavy workloads; pg_stat_recovery gives a single atomic snapshot of standby recovery state (replay LSNs, timelines, pause state, promotion status), replacing the need to combine several inconsistent functions;pg_stat_autovacuum_sc exposes the new per-table scoring system (based on XID age, multixact age, dead tuples, inserts, and analyze staleness) that now determines autovacuum table processing order, replacing the old pg_class ordering; and pg_dsm_registry_allocations lists dynamic shared memory registry entries (name, type, size) used by extensions that no longer need shared_preload_libraries and a restart. The piece walks through each view's schema and runs live demo queries showing sample output. PostgreSQL 19 is still in beta and details may change before GA.

Building on an earlier post advocating two-state (rather than tri-state) dark mode toggles, the author now argues that most websites shouldn't have a persistent dark mode toggle at all — the setting should default to following the OS and live in a settings panel instead. The piece responds point by point to Bramus's counter-argument for tri-state toggles (a scenario involving OS auto-switching plus reverted selections), calling it rare, cheaply recoverable, and a case of developers overweighting their own edge cases (IKEA effect meeting false-consensus bias). It also surveys community-designed alternative toggles (Vale's 3-in-2 design,

Inertia.js v3.7.0 adds a cancelOnUnmount attribute and a cancel method to the Form component so in-flight submissions can be aborted when a form unmounts or via a button click. usePoll now exposes a reactive polling value across Vue, React, and Svelte. Once props no longer lose their value during instant visits, and navigation no longer cancels background async visits aimed at other pages. Three fixes address a React back_forward stale-props bug, prop identity issues in replaceProp/appendToProp/prependToProp, and a Form unmount crash in React.

The UK government has set 2032 as a target date for switching off Freeview digital terrestrial TV broadcasting, moving television delivery entirely to internet-based streaming with an initial set-top-box requirement. This mirrors a broader European decline in over-the-air broadcast media, including the BBC's earlier shutdown of long wave and AM transmissions. Unlike past analog shutoffs, this move retires the very digital multiplex system (DVB-T/ATSC) that replaced analog TV roughly fifteen years ago, despite it still being widely used.