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Open-sourcing a more precise time appliance
Facebook engineers have built and open-sourced an Open Compute Time Appliance, an important component of the modern timing infrastructure. To make this possible, we came up with the Time Card — a P…
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More details about the October 4 outage
Now that our platforms are up and running as usual after yesterday’s outage, I thought it would be worth sharing a little more detail on what happened and why — and most importantly, how we’re lear…
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Lessons learned from sharding Postgres at Notion
With an effort to make Notion faster and more reliable for years to come — we migrated Notion’s PostgreSQL monolith into a horizontally-partitioned database fleet.
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HashiCorp IPO today
As we officially enter the public markets, we plan to continue to do what we think we do best: solving problems for our end users.
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Ubuntu 21.04
Ubuntu 21.04 is here, with native Microsoft Active Directory integration, performance optimization and joint support for Microsoft SQL Server on Ubuntu. […]
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Behind the scenes, AWS Lambda
How does AWS Lambda work under the hood? Let's find out together!
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Bye CUPS: Printing with Netcat
Turns out printing doesn't have to be hard
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The 5-Hour CDN
You can build a functional CDN on an 8-year-old laptop while you're sitting at a coffee shop. Here's what a CDN you put together in five hours might look like.
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Common Nginx misconfigurations that leave your web server open to attack
Detectify analyzed 50,000 unique Nginx configuration files on GitHub and reported some common misconfigurations.
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My ISP Is Killing My Idle SSH Sessions
tl;dr: My ISP’s CGNAT session timeout is too short, meaning TCP keepalives gets dropped. Test if your own NAT, or your ISP’s CGN, violates RFC5382 ‘s REQ-5 using this tool: https://github.com/AndersTrier/NAT-TCP-test .
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Will Cloudflare R2 Win Customers from Amazon S3?
Cloudflare announced their exciting new object storage product, Cloudflare R2. Will they take market share?
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Kafka without ZooKeeper
Major milestone release Apache Kafka 4.0 removes ZooKeeper entirely, provides early access to Queues for Kafka, and enables faster rebalances, in addition to many other new KIPs.
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Postgres scaling advice
Planning to scale PostgreSQL? Learn when a single node is enough, how to prepare for sharding, and which scaling steps to consider first.
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Why I distrust Google Cloud more than than AWS or Azure
As of April/2021 for people planning on integrating deeply with a Cloud provider services (not going for cloud-agnostic-solutions) choosing to depend on Google Cloud instead of AWS or Azure will more often than not prove to be an expensive mistake.
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Flatpak Is Not the Future
Deploying apps for the Linux desktop is hard. A major problem has historically been library compatibility. Different Linux distributions, and even different versions of the same distribution, have had incompatible libraries. Unfortunately, there hasn’t always been a culture of backwards compatibility on the Linux…
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Nix is the ultimate DevOps toolkit
At Channable we use Nix to build and deploy our services and to manage our development environments. This was not always the case: in the past we used a combination of ecosystem-specific tools and custom scripts to glue them together. Consolidating everything with Nix has helped us standardize development and…
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Tiny Container Challenge: Building a 6kB Containerized HTTP Server
TL;DR I set out to build the smallest container image that I could that was still able to do something useful. By taking advantage of multistage builds, the scratch base image, and a tiny assembly-based HTTP server, I was able to get it down to 6.32kB!
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SSH and User-Mode IP WireGuard
Documentation and guides from the team at Fly.io.
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NixOS on Framework Laptop
The time has come to replace the work laptop (thanks, Mozilla!). Here is an adventure of setting up NixOS on a Framework laptop. I’m writing this on it right...
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An Update on Our Outage
Roblox is a global platform where millions of people gather together every day to imagine, create, and share experiences with each other in immersive, user-generated 3D worlds.
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It's tough being an Azure fan
Azure has never been the #1 cloud provider - that spot continues to belong to AWS, which is the category leader. However, in most people’s minds, it has been a pretty reasonable #2, and while not necessarily vastly differentiated from AWS there are enough things to write home about. However, even as a user and…
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AWS Lambda Cold Start Times
Let’s compare the performance of all supported runtimes + 2 custom runtimes (Rust and GraalVM).
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Why and how GitHub is adopting OpenTelemetry
Building on top of OpenTelemetry empowers us to provide integrated and opinionated observability solutions for our application engineers.
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Operations is not Developer IT
My code doesn't compile. Why? The number of times in my career I have been asked a variation on "why doesn't my application work" is shocking. When you meet up with Operations people for drinks, you'll hear endless variations on it. Application teams attempting to assign ownership