How Figma Migrated to Kubernetes (6 minute read)
Figma migrated from AWS ECS to Kubernetes because as the team's needs became more complex, they were hitting the limitations of ECS. Kubernetes, on the other hand, lets Figma avoid vendor lock-in, benefit from the open-source community, and hire engineers with previous Kubernetes experience. Figma migrated to Kubernetes over the span of multiple months, making sure to loadtest, incrementally shift traffic through weighted DNS, and use real workloads along the way.
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Python 3.12 vs Python 3.13 – performance testing (10 minute read)
A benchmark of Python 3.12 and Python 3.13 found that Python 3.13 generally outperformed Python 3.12, showing a geometric mean improvement of 1.08x on the AMD system and 1.05x on the Intel system. However, Python 3.13 experienced performance drops in some benchmarks, especially in areas like coverage and regex on both systems.
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Upgrading Uber's MySQL Fleet to version 8.0 (14 minute read)
Uber's MySQL infrastructure underwent a major upgrade from version 5.7 to 8.0 to address security concerns and improve performance. The company went for a side-by-side upgrade approach to minimize downtime, reduce risk, and allow for thorough testing. The upgrade was a multi-stage process with node replication, a soak period, traffic diversion, and primary node promotion.
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Code review antipatterns (14 minute read)
Reviewers can often hinder code review progress by nitpicking endlessly ("Death of a Thousand Round Trips"), using reviews as leverage for unrelated tasks ("Ransom Note"), or by constantly contradicting each other ("Double Team"). Reviewers shouldn't act as gatekeepers but keep the project's success in context.
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HTML Whitespace is Broken (46 minute read)
There are numerous issues with whitespace handling in HTML, from unexpected rendering inconsistencies to formatting problems. A possible solution is quoting strings in HTML to clearly differentiate between significant and insignificant whitespace. A more pragmatic solution would be adding a new HTML entity (&ncsp;) to represent a non-collapsible space.
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Vortex (GitHub Repo)
Vortex is a toolkit for working with compressed Apache Arrow arrays in memory, on disk, and over the wire. It's designed to succeed Apache Parquet with faster random access reads and scans.
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Gosub (GitHub Repo)
The Gosub browser engine is still under development but aims to become a standalone web browser library for parsing HTML5 and CSS3, rendering web pages, and executing JavaScript.
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ARIA DevTools (Chrome Extension)
ARIA DevTools is an open-source extension for developers that helps them build accessible web applications by highlighting missing ARIA labels, misused roles, and incomplete keyboard support.
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Teaching the world's largest programming lesson (17 minute read)
This author taught 1,668 students the basics of Python in a Guinness World Record attempt for the largest programming lesson. The lesson was designed for beginners and covered topics like algorithms, basic syntax, conditional statements, loops, and importing external code. He used Sudoku as an example to illustrate how Python can be used to solve real-world problems.
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Splitting engineering teams into defense and offense (4 minute read)
A startup founder's 4-person engineering team tackled the challenge of balancing customer support and feature development by splitting their team into "defense" and "offense" roles. Two engineers focused on long-term projects in uninterrupted blocks while the other two handled customer support, bug fixes, and other urgent tasks. This "fortress" approach allowed the "offense" engineers to be more focused and productive.
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Clipscreen (GitHub Repo)
Clipscreen is a simple application that creates a virtual monitor mirroring a portion of your screen, allowing you to easily share specific areas during screen-sharing sessions.
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Priyam Mohanty, Jenny Xu & Ceora Ford
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