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Building DigitalOcean's API Gateway
technology blog about ruby, scala, java, golang, software engineering and programming in general
Topics /
Infrastructure & DevOps
The most popular blog posts about infrastructure & devops on Hacker News. 166 posts.
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SRE Doesn’t Scale
We encounter a lot of organizations talking about or attempting to implement SRE as part of our consulting at Real Kinetic. We’ve even discussed and debated ourselves, ad nauseam, how we can apply it at our own product company, Witful. There’s a brief, unassuming section in the SRE book tucked away towards the tail…
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Kubernetes at Home with K3s
It’s been a while on the blog! I promise there will be more regular updates from now on, but maybe not always about tech… But why I know what you’re thinking - Kubernetes? On a home server? Who’d be that crazy? Well, a while ago I’d agree but a few things have changed my mind recently…
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Rolling your own minimal embedded Linux for the Raspberry Pi
Introducing a series of articles on building a custom Linux installation for the Raspberry Pi, for appliance applications.
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IoT Nixie Tubes
Every day I make a cup of coffee, organize a list of the things I want to do that day, and try to work through it. Every time I finish one of the tasks, I mark it as complete. By the end of the day, ideally there are no things left on the list, but if there are, I’ll move them into a backlog and start fresh the next…
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Tmpfs inode corruption: introducing inode64
A few months ago I got a report from a service owner that their service was crashing when trying to access certain files stored in tmpfs. This service provid...
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Anti-patterns when building container images
This is a list of recurring anti-patterns that I see when I help folks with their container build pipelines, and suggestions to avoid them or refactor them into something better.
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Downloading files from S3 with multithreading and Boto3
Yesterday I found myself googling how to do something that I’d think it was pretty standard: How to download multiple files from AWS S3 in parallel using Python? After not finding anything reliable in Stack Overflow, I went to the Boto3 documentation and started coding. Something I thought it would take me like 15…
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Uptime Lab's CM4 Blade Adds NVMe, TPM 2.0 to Raspberry Pi
A few weeks ago, I received two early copies of Uptime.Lab's CM4 Blade. The Blade is built for the Raspberry Pi Compute Module 4, which has the same processor as the Pi 4 and Pi 400, but without any of the built-in IO ports. You plug the CM4 into the Blade, then the Blade breaks out the connections to add some…
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Cache Poisoning at Scale
Identifying and exploiting over 70 cache poisoning vulnerabilities across major bug bounty programs, including GitHub, GitLab, Shopify and HackerOne.
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Building a high-scale chat server on Cloud Run
In this blog, I will show you how to use WebSockets support to build a fleet of serverless containers that make up a chatroom server that can scale a high number of concurrent connections (250,000 clients).
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We check our node_modules folder into source control
On every team at every company I've been at prior to my current role, the advice was simple: don't check your node_modules folder into your version control system (which I'll refer to as “Git” for the rest of this article…). This seemed like solid advice for multiple reasons:
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Containers vs. pods – taking a deeper look
Can a Kubernetes Pod be created with plain Docker commands? Learn the difference between Containers and Pods by exploring how they are implemented under the hood.
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Laptop to Lambda: Outsourcing Everyday Jobs to Thousands of Transient Containers
This week’s paper review is the second in a series on “The Future of the Shell” (Part 1, a paper about possible ways to innovate in the shell is here ). As always, feel free to reach out on Twitter with feedback or suggestions about papers to read! These weekly paper reviews can also be delivered weekly to your inbox .
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Some thoughts on microservices
A blog about programming, technology and open-source stuff.
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Podman in Linux
Podman is the new cool kid on the block. Podman is a deamonless container(OCI) engine for Linux. It's the natural open-source Docker replac...
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Huawei ExaGear: x86_64 apps on Arm 64-bit Linux systems
Note: This post is only kept up for historical reasons. The current ExaGear EULA doesn’t allow using ExaGear outside of Huawei Kunpeng processors.
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An Overview of Docker Desktop Alternatives
It's been a few years since I was a maintainer of minikube, but after the news that Docker Desktop will no longer be free for enterprises and some of the misconceptions of how the technology works, I thought I'd write...
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How I accidentally took down GitHub Actions (2019)
Last December, I was invited to a private bug bounty program to test a beta version of GitHub Actions. GitHub Actions is a workflow automation tool integrated with GitHub. One common use case of GitHub Actions is for CI builds – a project can fairly easily start up a Docker container every time they push a commit…
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Don’t use environment variables for configuration
Suppose you need to create a function for adding two numbers together in plain C. How would you write it? What sort of an API would it have?...
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The Unfulfilled Promise of Serverless
I suggest that serverless computing, or “serverless” has hype that at this point has outpaced what the technology / philosophy / religion has been
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Tools to Run Kubernetes Locally
Kubernetes is a big and complicated technology and it clearly requires some time and dedication to wrap your head around. There is no vendor lock-in…
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Lucky Lotto, chaos engineering but for teams
Building resilience teams with chaos engineering principles.
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Load testing is hard and the tools are not great
If you're building an application that needs to scale—and we all tell ourselves that we are—then at some point you have to figure out if it does or not. This is where load testing comes in: if you want to see whether or not your application can handle scale, just generate scale and see if it can handle it! It sounds…
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The cost of cloud
Putting your IT infrastructure into the cloud seems to be the "in" thing. It's been around for a while, of course. And, like most things rel...