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Next.js App Router — WebSockets via Client Islands

The Challenge: Realtime in the Age of Server Components The paradigm shift toward React Server Components (RSC) and the Next.js App Router has fundamentally changed how we architect web applications.

  • Client Islands pattern isolates stateful logic into tiny components.
  • WebSocket connections managed on client side via useEffect.
  • Managed providers recommended for reliable WebSocket deployment.

Tech

Scaling Kafka Consumers in Spring Boot: How We Cut Lag and Saved Latency

Scaling Kafka Consumers in Spring Boot: How We Cut Lag and Saved Latency When scaling high-throughput event-driven microservices in fintech, default Spring Kafka consumer configurations often run into…

  • Increase concurrency beyond default single-threaded listeners
  • Implement explicit batch processing and idempotency
  • Match topic partition count with container concurrency

Tech

The standard library is not a validator: 72 hours of zero-dependency JSON in Rust

I spent last weekend building a JSON toolkit in Rust under one rule: no third-party dependencies . Not "few". None. The [dependencies] table in Cargo.toml is present and empty, and Cargo.lock holds exactly one package — the project itself. No serde , No serde_json , No clap , No itoa , No ryu .

  • Rust's standard library lacks guaranteed JSON validation
  • 10% of JSON documents rejected by RFC 8259 accepted by default number parsing
  • jaq-lite JSON parser complies with RFC 8259 and handles invalid numbers

Tech

Dyson made a camera-equipped toothbrush that flosses for you

Dyson is once again expanding its line of personal care products with a device that focuses on your teeth instead of your hair. As the name implies, the $499 CameraJet is the first electric toothbrush to incorporate a camera into the brush head. Available starting today in ceramic blue or ceramic pink color options, it […]

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How engineered microbes could help feed the world’s crops

Fertilizer is crucial for the global food supply, but making it uses a lot of energy and produces a lot of emissions. Some companies hope microbes can help. A growing body of research shows that seeding the soil around a crop’s roots with beneficial microbes can help feed the plant, providing crucial nitrogen to help…

Tech

LG Energy Solution Secures U.S. Lithium Supply to Strengthen North American Battery Chain

LG Energy Solution is stepping up efforts to localize its battery materials supply chain in North America by securing a long-term supply of lithium carbonate produced in the United States.The battery…

  • LG Energy Solution secures 80,000 tons of lithium carbonate from Smackover Lithium for 10 years.
  • Smackover Lithium uses direct lithium extraction (DLE) technology in Arkansas project.
  • Agreement aims to reduce LG's foreign dependency on critical battery materials.

Tech

Electrically Charged Raindrops Can Corrode Cars and Buildings

Researchers have found that tiny electrical charges picked up by moving water droplets may be damaging cars and buildings like the Eiffel Tower.

  • Tiny electrical charges on raindrops degrade Teflon and corrode copper.
  • Contact electrification causes water droplets to become charged spontaneously.
  • Study suggests electrical state of water droplets influences corrosion.

Tech

Rain, internet outages hit first day of Hong Kong’s robot convenience stores

Heavy rain and internet outages have marred the first day of operations for Hong Kong’s fully automated convenience stores, but visitors say they appreciate the new robot shop manager’s work. The “Galbot Stores”, operated by wheeled humanoid robots, opened two outdoor outlets in Hung Hom and Wan Chai and an indoor unit in Kai Tak on…

Tech

Magna increases bet on battery swapping in India with $35M for Yuma

Magna's investment in Yuma Energy has reached $87 million as the Canadian auto supplier increases its majority stake in the Indian battery-swapping firm.

  • Magna International invests $35M in Yuma Energy, Bengaluru-based firm
  • Yuma Energy completed over 60 million battery swaps, operates 100,000 batteries
  • Magna increases stake to 78%, aims to double battery fleet in 12-18 months
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