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Self-hosting email like it's 1984
Notes from setting up a truly minimal self-hosted email server with Postfix and OpenDKIM. Covers TLS, SPF, DKIM, DMARC, DNS, reverse DNS, multiple domains, and delivering to Gmail.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 4,377 posts.
Infrastructure & DevOps
Any year
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Why One Programmer Doesn’t Do DevOps Anymore
The story of one programmer’s journey into, and vehement rejection of, this thing we call “DevOps” – lessons learned, sound advice and why you’re probably doing it all…
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Introducing E2, new cost-optimized general purpose VMs for Google Compute Engine
A technical look at dynamic resource management behind E2 VM machine types.
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System separation in the Continental Europe Synchronous Area on 8 January 2021
On 8 January 2021 at 14:05 CET the synchronous area of Continental Europe was separated into two parts due to outages of several transmission network elements in a very short time. ENTSO-E has published the first information on the event already on 8 January 2021, followed by an update with geographical view and time…
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Indoor Wi-Fi Roaming with OpenWRT
A few months after writing up the Cudy AX3000 units and moving the house over to OpenWRT, I ended up revisiting the one bit I had deliberately waved away ...
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Google Axion Processors – Arm-based CPUs designed for the data center
The custom Axion Arm-based processor is designed for general-purpose workloads like web and app servers, databases, analytics, CPU-based AI, and more.
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Self hosting 10TB in S3 on a framework laptop and disks
About 5 months ago I made the decision to start self hosting my own S3 . I was working on AppGoblin’s SDK tracking of the top 100k Android and iOS apps so was wanting a lot of space, but for cheap.
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Run Ordinary Rails Apps Globally (2021)
Documentation and guides from the team at Fly.io.
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Looking Forward to 2018
Let’s Encrypt had a great year in 2017. We more than doubled the number of active (unexpired) certificates we service to 46 million, we just about tripled the number of unique domains we service to 61 million, and we did it all while maintaining a stellar security and compliance track record. Most importantly though…
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LinuxKit: A Toolkit for Building Secure, Lean and Portable Linux Subsystems
Docker is a founding member of the Blueprint Alliance, a 12-company reference architecture for securing AI agents, built around four governance questions.
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How I Use Home Assistant in 2025
I’ve been using Home Assistant for about seven years now, starting back when I was living in a small apartment. At the time, my setup was modest: I …
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Are hard drives getting better?
After 13 years, the data is clear—the bathtub curve does not apply to hard drives. And, more importantly, hard drives are failing less and lasting longer.
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Making Websites Small
Practical notes on smaller websites: reduce page weight, optimize images, and simplify frontend dependencies.
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How and why I run my own DNS servers
Despite my woeful knowledge of networking, I run my own DNS servers on my own websites run from home.
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You can list a directory containing 8 million files But not with ls..
I needed to list all files in a directory, but ls , find , and os.listdir all hung. This is my story.
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Supabase Edge Functions
Today we're launching Edge Functions. Edge Functions let you execute Typescript code close to your users, no matter where they're located.
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Online migrations at scale
Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for businesses of all sizes.
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eBPF Is Awesome
A blog about programming, technology and open-source stuff.
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Microservices are hard
Over the past years I attended hundreds of interviews. Many candidates proudly told tales on how they develop their projects with a microservice architecture. Often (I don’t want to say “always”, but from my memory I think it actually is “always”) it does not require many questions to see that they used a rocket…
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Ubuntu 21.10
14 October 2021: Today, Canonical released Ubuntu 21.10 – the most productive environment for cloud-native developers and AI/ML innovators across the desktop, devices and cloud. “As open source becomes the new default, we aim to bring Ubuntu to all the corners of the enterprise and all the places developers want to…
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All you need is Wide Events, not "Metrics, Logs and Traces"
This quote from Charity Majors is probably the best summary of the current state of observability in the tech industry - a total, mass confusion.
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Torus: A distributed storage system by CoreOS
No single cloud fits all. Explore how we build a more flexible future with hybrid cloud.
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DevOps didn’t exist when I started as a developer
Explore the history of DevOps and its impact on the tech industry from the perspective of a long-time software engineer and developer advocate.
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The sad state of web app deployment
I spent a good chunk of the last four days installing an Internet web forum, which claims it can be up and running in 30 minutes. I like to think I’m pretty alright at computers. So what went wrong here? Well let me tell you.
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Cloud Filestore, high-performance file storage for GCP users
By Tad Hunt, Product Manager; Chris Talbott, Product Marketing As we celebrate the upcoming Los Angeles region for Google Cloud Platform ...
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Storage on Vercel
New to the Vercel dashboard: Vercel KV, Vercel Postgres, and Vercel Blob. Announcing serverless storage solutions available on Vercel.
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Backblaze hard drive reliability stats for Q3 2016
We take a look at the hard drive performance of over 65,000 hard drives ranging from 2TB to 8TB drives. Find out the best performers.