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A Month of Terraform
I took Heroku for granted, and a month into setting up my own infra, I now know how much it bought me.
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 1,508 posts.
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URL query parameters and how laxness creates de facto requirements on the web
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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JavaScript Generators, Meet XPath
If the text is neatly neatly isolated inside an HTML element, it’s easy; this will do:
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What Outranks Thread Priority?
This investigation started, as so many of mine do, with me minding my own business, not looking for trouble. In this case all I was doing was opening my laptop lid and trying to log on.The first fe…
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Implementing Raft: Part 2: Commands and Log Replication
This is Part 2 in a series of posts describing the Raft distributed consensus algorithm and its complete implementation in Go. Here is a list of posts in the series:
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Using JAX, numpy, and optimization techniques to improve separable image filters
By the end of this blog post, we aim to improve the results of my previous blog post of approximating circular bokeh with a sum of 4 separable filters and reducing its artifacts (left) through an o…
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Good Logging
To check if a program is doing what it should, you can inspect the output from a given input. But as the system grows, you also need logging to help you understand what is happening. Good log messa…
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Deep Dive into PHP 8's JIT
PHP 8's Just In Time compiler is implemented as part of the Opcache extension and aims to compile some Opcodes into CPU instructions in runtime. Let's understand how it works all together.
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Using an old BlackBerry as a portable SSH or Telnet terminal
EDIT 2022-07-22: With the shutdown (or imminent shutdown) of the 2G/EDGE/3G network in the US I'm now switching to a BlackBerry Q10, which supports LTE and is able to run ConnectBot.
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Examining Windows 1.0 Hello.c
For those who’ve been long-time readers of SoylentNews, it’s not exactly a secret that I have a personal interest in retro computing and documenting the history and evolution of the Personal Computer. About three years ago, I ran a series of articles about restoring Xenix 2.2.3c, and I’m far overdue on writing a new…
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Shrinking a Kotlin Binary by 99.2%
We'll get to the shrinking, but first let's motivate the binary in question. Three years ago I wrote the "Surfacing Hidden Change to Pull Requests" post which covered pushing important stats and diffs into PRs as a comment. This avoids surprises with changes that affect binary size, manifests, and dependency trees.
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Nested Transactions in CockroachDB 20.1
What do nested transactions look like in an ACID environment? We explore the journey of a nested SQL transaction in CockroachDB in this post.
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Walking the Clojure source history: a talk not given
Years ago I planned to give a talk centered around exploring the Clojure source history to find interesting buried artifacts. In service to that goal I walked every commit in the repository to see what I could find. There were indeed interesting discoveries, but eventually my passion for giving the talk 1 dissipated…
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Finding Software Bugs Using Symbolic Execution
Internet home of Raimondas Sasnauskas. Stories of my journey.
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Undefined behavior can result in time travel (2014)
The rules of logic no longer apply when you cross the line.
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What Is Zig's “Colorblind” Async/Await?
An introduction to Zig's curious concurrent programming API.
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Quines: self-replicating programs (2005)
A “ quine ” (or “ selfrep ”) is a computer program which prints its own listing. This may sound either impossible, or trivial, or completely uninteresting, depending on your temper and your knowledge of computer science. Actually, it is possible, and there are some interesting ideas involved (in particular, writing a…
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Performance Improvements in .NET 5
Explore many performance improvements, big and small, that have gone into the .NET 5 runtime and core libraries to make apps and services leaner and faster.
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Named Tensors
Named tensors for better deep learning code.
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Blogging about Midori (2015)
Joe Duffy's Blog | Adventures in the high-tech underbelly
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Introducing MAUI, the .NET Multi-Platform App UI
You can build anything with .NET. It’s one of the main reasons millions of developers choose .NET as the platform for their careers, and companies invest for their businesses. With .NET 5 we begin our journey of unifying the .NET platform, bringing .NET Core and Mono/Xamarin together in one base class library (BCL)…
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Staff archetypes
Most career ladders define a single, uniform set of expectations for Staff engineers operating within the company. Everyone benefits from clear role expectations, but career ladders are a tool that applies better against populations than people. This is particularly true for Staff-plus engineers, whose career ladders…
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PEP 634 – Structural Pattern Matching: Specification
This PEP provides the technical specification for the match statement. It replaces PEP 622, which is hereby split in three parts:
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The Day The Standard Library Died
In Prague, the C++ committee took a series of polls on whether to break ABI, and decided not to. There was no applause. But I’m not sure we fully understood what we did and the consequences it could have.
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AF_UNIX comes to Windows
Introduction: Beginning in Insider Build 17063, you’ll be able to use the unix socket (AF_UNIX) address family on Windows to communicate between Win32