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THE DAILY INDEX

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Across today’s newsletters

Today’s Index

TWO WAYS TO THE TWO REACTS

This article goes over two approaches to building React apps: Next.js App Router, which prioritizes server-side rendering and data management, and TanStack Start, which has a client-centric focus while offering server-side capabilities as an extension. Next.js App Router advocates for a unidirectional flow of data from server to client, while TanStack Start has an incremental approach that allows developers to gradually integrate server-side features into their existing client-focused React apps.

SPACEX TO LAUNCH STARSHIP FOR THE SIXTH TIME THIS MONTH

The sixth flight test of SpaceX's Starship may be as soon as November 18. It will have many of the same objectives as the previous test, which is part of the reason for the fast approval. SpaceX will also attempt to relight one of the Starship's six Raptor engines in orbit, test new secondary thermal protection materials, and stress the limits of flap control to gain data on future landing profiles. Its engineers have introduced a number of upgrades to the system, including more redundancy in the booster propulsion system and updated software controls.

A NEW STRONGER OZEMPIC IS COMING. HERE'S WHAT TO KNOW

Novo Nordisk's CagriSema combines semaglutide, the active ingredient in Ozempic and Wegovy, with an amylin and calcitonin receptor agonist. Amylin helps regulate blood sugar levels while calcitonin controls calcium levels in the blood. An early-stage clinical trial of CagriSema found it helped patients lose more weight faster compared to the highest dose of Wegovy. Late-stage trials of the drug are expected later this year and in the first half of 2025.

HOW WEBSOCKETS COST US $1M ON OUR AWS BILL

Inter-process communication (IPC) can result in enormous AWS bills if done inefficiently. Recall.ai discovered that its Python WebSocket client and Chromium's WebSocket implementations were calling two functions that were taking up a majority of its CPU time. This article looks at how the company discovered the issue, why it chose to use WebSockets in the first place, and how it fixed the issue and reduced the CPU usage of its bots by up to 50%. This exercise in optimizing IPC for CPU efficiency reduced Recall.ai's AWS bill by over a million dollars per year.

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