backend

6 post collection

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Building a Spatial Index Supporting Range Query using Space Filling Hilbert Curve

Like Grant showed, it's continuous from order `n` to order `n+1`, meaning that scaling it down won't move anything around; in terms of percentages, both the 2D -> 1D and 1D -> 2D transformations will look exactly the same. After fixing a few bugs, it was "scrolling like butta" before my very eyes!…
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Greenhouse development update 1

I have been striving to work on greenhouse every day. Of course, I can't always meet that standard, but I believe I've gotten more done than my activity heatmap might indicate, as I have a bad habit of working on elements and features for more than a day before I commit them.…
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Creating a Simple but Effective Outbound "Firewall" using Vanilla Docker-Compose

This is great for inbound connections, but it does nothing to control outbound connections. ...I would much rather find a way to control outbound connections using the vanilla docker and docker-compose features. So that's what I set out to do, and that's where the internal networks come into play.…
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Assorted NoSQL Thoughts: Git, Datomic, and Fact Accretion

Once upon a time, I worked for a company that loved SQL Server and normalized data. They loved normalization because it made their operational data store "alive", that is, no matter what dat…
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Stream processing using the Disruptor with C# and .NET

This was a blog post I wrote for my employer's blog back when I was a "consultant". In my last post I introduced the Disruptor pattern — a way of writing efficient, processor friendly code…
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Managing Process Efficiently: Intro to the Disruptor Pattern

This was a blog post I wrote for my employer's blog back when I was a "consultant". The Disruptor is, essentially, a scheduling strategy builder for multithreaded code. It stands out in th…