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High-performance read-through cache for object storage

news.ycombinator.com Unknown 2025-09-20 14:13:17

Cachey High-performance read-through cache for object storage. Simple HTTP API Hybrid memory + disk cache powered by foyer Designed for caching immutable blobs Works with any S3-compatible backend, but has its own /fetch API requiring a precise Range API requiring a precise Fixed page size (16 MiB) – maps requested byte range to page-aligned lookups Coalesces concurrent requests for the same page Makes hedged requests to manage tail latency of object storage Can attempt redundant bucket

Topics: bucket c0 cache page range
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Mubook – N100 x86 NAS Carrier Board Designed for Hackclub Highway

news.ycombinator.com Unknown 2025-11-23 15:52:10

Mubook Mubook is a "portable" x86 based system that is designed to house both mini PC and homelab functionalities while still being small enough to be easily carried and expandable enough for processor upgrades. The project itself is a submission to Hackclub Highway and has the capability to support 4 3.5 inch HDDs and M.2 cards while maintaining upgradeability and much higher performance over other SoM boards with its Intel N100 processor. Onshape Link: https://cad.onshape.com/documents/5acc

Topics: design link mubook nan rc0402fr
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I finally found a thermal camera that works on iPhone and Android

zdnet.com Adrian Kingsley-Hughes 2026-01-03 15:59:06

ZDNET's key takeaways The Topdon TC992C Duo Thermal Camera is available now for $269 on Amazon. It's an accurate and reliable thermal camera for iPhone, Android, and Windows. It's a bit more expensive than some of the other thermal imaging cameras. View now at Amazon I'm a big fan of having a thermal camera (or two) as part of my repair kit. I use them for all sorts of applications, from detecting faulty components on circuit boards to figuring out where that pesky draught is coming from in w

Topics: camera duo tc002c thermal topdon
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Simplest C++ Callback, from SumatraPDF

news.ycombinator.com Unknown 2026-03-19 04:26:38

SumatraPDF is a Windows GUI application for viewing PDF, ePub and comic books written in C++. A common need in GUI programs is a callback. E.g. when a button is clicked we need to call a function with some data identifying which button was clicked. Callback is therefore a combo of function and data and we need to call the function with data as an argument. In programming language lingo, code + data combo is called a closure. C++ has std::function<> and lambdas (i.e. closures). Lambdas convert

Topics: data fn func0 function void
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