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FreeBSD/EC2 on C5 instances
Ever since the first EC2 instances launched — the ones which were retrospectively named "m1.small" — Amazon has relied on the Xen hypervisor. No longer: C5 instances use KVM. This sounds like it would be a problem, but in fact that change didn't bother FreeBSD at all: Now that everything uses hardware-based paging…
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AWS EC2 Virtualization 2017: Including Nitro
AWS EC2 Virtualization 2017: explaining the different virtualization types, from emulation and binary substitution, paravirtualization and Xen, PV, HVM, and PVHVM modes, and the new Nitro hypervisor
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Preventing server overload: limit requests being processed
Recently at Bluecore I ran into a familiar situation: during brief periods of overload, all requests to a server were timing out. It was a catastrophic failure, where the server completely stopped serving. We added more capacity to prevent overload, but we also wanted to fix the server. Instead of exploding, it should…
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AWS Lambda – Best practices
In this post we are going to go through the best practices while building an AWS Lambda function. In order to go through this blog you should know what is it and you should ideally have built at le…
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Creating an Autonomous System for Fun and Profit
The thoughts and projects of an engineer who likes to convert solder, firmware, and wire into all sorts of different forms of entertainment.
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The state of netbooting Raspberry Pis
Let's take a look at the state of netbooting for Raspberry Pis including how and why you'd build a cluster and how well containers play with network booting
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Casync – A tool for distributing file system images
Posts and writings by Lennart Poettering
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Incremental Backups Using GNU Tar and S3
How to take snapshots of a directory and send to them as backups to S3 using Linux tools
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Zsh Configuration from the Ground Up
The personal website of Mark Hanford Nichols.
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The Peculiarly Quiet Decline and Fall of the KVM
Yes, that familiar little PC peripheral. The one that toggles a single keyboard/mouse/display ensemble between two or more connected machines.
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.NET Core Web API on AWS Lambda Performance
In order to understand what I’m going to talk about, you must know what is AWS Lambda, I talked about in this blog post where I went through getting started with Visual studio code and AWS Lambda, …
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Micro-monolith anti-pattern
Microservice-based architecture gains popularity every day. This approach has many advantages. The most important advantages include independent deployments, shortened and simplified deployment pipelines, limited communication between teams, and technology freedom. These core advantages support the quick delivery of…
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Persisting state between AWS EC2 spot instances
Persisting state between AWS EC2 spot instances using Docker on an external volume
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Patching Is Hard
There are many news reports of a ransomware worm . Much of the National Health Service in the UK has been hit; so has FedEx . The patch for the flaw exploited by this malware has been out for a while, but many companies haven’t installed it. Naturally, this has prompted a lot of victim-blaming: they should have…