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New
The latest blog posts to take off on Hacker News. 1,839 posts.
Infrastructure & DevOps
Any year
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Why you should not use Google Cloud
FINAL UPDATE (25-March-2022): Because of this article, we often keep getting asked if we still use GCP and if we would recommend it to…
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Docker Considered Harmful (2016)
A note in advance: This is absolutely not about Docker being too "opinionated" for me, or other tools being more flexible. I believe that learning and using Docker is just plain more complicated than learning and using the tools I describe below. Docker is genuinely more complex and harder to use than the…
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How modern Linux systems boot
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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Pulumi – A new open-source cloud development platform
Joe Duffy's Blog | Adventures in the high-tech underbelly
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ServiceFabric: a distributed platform for building microservices in the cloud
ServiceFabric: a distributed platform for building microservices in the cloud Kakivaya et al., EuroSys’18 (If you don’t have ACM Digital Library access, the paper can be accessed either by fo…
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There are real reasons for Linux to replace ifconfig, netstat, etc
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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Extracting SSH Private Keys from Windows 10 ssh-agent
The newest Windows 10 update includes OpenSSH utilities, including ssh-agent. Here’s how to extract unencrypted saved private keys from the registry
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Docker is a dangerous gamble
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Is K8s Too Complicated? 
Joe Beda had a great twitter thread this morning about the complexity of Kubernetes. You can read it in full , and I suggest you do, but I wanted to quote a few things I found to be particularly thought provoking:
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Free SSL on Github Pages with a custom domain: Part 2 – Let's Encrypt
GitHub Pages has just become even more awesome. Since yesterday1, GitHub Pages supports HTTPS for custom domains. And yes, it is still free!
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Unprivileged Docker Builds – A Proof of Concept
I work at a very ‘locked-down’ enterprise, where direct access to Docker is effectively verboten.
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AWS EC2 T2 Instances Demystified: Don’t Learn the Hard Way
How T2 burstable instances and CPU credits really work, with a worked example of a busy t2.micro running out of credits and grinding to a halt.
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How did we end up with containers?
A short case study breaking down the interesting design aspects of containers.
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DNS Performance compared: CloudFlare 1.1.1.1 x Google 8.8.8.8 x Quad9 x OpenDNS
A couple of months ago I did a performance comparison between some of the top free DNS Resolvers available. It was just after Quad9 had…
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Managing database schema changes without downtime
How we manage schema changes at Discourse minimizing downtime
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Linux v4.15: Performance Goodies
With the Meltdown and Spectre fiascos , performance isn't a very hot topic at the moment. In fact, with Linux v4.15 released, it is one ...
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Stateful Experiments on AWS Lambda
In January 2017, we presented results to the European Commission on a FP7project called SyncFree, where we were tasked with a large-scale evaluationof the Lasp programming system. In this evaluatio...
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Futures of distributions
Seems Debian is talking about why they are unable to package whole categories of modern software, such as anything using npm. It's good they're having a conversation about that, and I want to give a broader perspective.
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Things I Learned Managing Site Reliability (2017)
For several years I managed the 3rd line site reliability operation for many of the world’s busiest gambling sites, working for a little-known company that built and ran the core backend online software for several businesses that each at peak could take tens of millions of pounds in revenue per hour. I left a couple…
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Rainbow Deployments with Kubernetes
or: how you can deploy services to Kubernetes that require long periods of draining. #🌈 🌈 🌈 #If you want to jump directly to the technical solution, check out the project repo. Below is a short story about how we got to this solution.
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Dtrace for Linux
Not explicitly mentioned in that talk, but certainly the most exciting thing, is that Oracle is doing a proper linux kernel port: