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Every blog post that took off on Hacker News, ranked by the votes of its best submission. 80,910 posts.

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20198

When LIMIT 9 works but LIMIT 10 hangs

I got a Slack message from colleagues at a major partner. They’d updated their dev environment to support WebSockets, so that Neon’s serverless driver could be used there, but then they’d run into a weird issue. The nub of it was this: This hangs: This works Reproducibly, the query without an ORDER BY ran fine […]

20200

All in with Nuitka

After more than 10 years of working on the Python compiler Nuitka, and at the age of 50, I have finally decided to take the plunge. My projects “Nuitka” and “Nuitka commercial” are now my day job , and I quit my work in the Air Traffic Community, after working on ARTAS (a software to create an Air Situation Picture…

20208

Io uring

Introduced in 2019 (kernel 5.1) by Jens Axboe, io_uring (henceforth uring) is a system for providing the kernel with a schedule of system calls, and receiving the results as they're generated. Whereas epoll and kqueue support multiplexing, where you're told when you can usefully perform a system call using some set of…

20209

Differentiable Neural Computers

In a recent study in Nature, we introduce a form of memory-augmented neural network called a differentiable neural computer, and show that it can learn to use its memory to answer questions about complex, structured data, including artificially generated stories, family trees, and even a map of the London Underground…