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The Missing Bundler FeaturesOver the last few months, there has been a lot of talk about making Bundler faster, both by improving it directly, or by reimplementing it in another language, and while it may surprise some, that didn’t excite me much. 2026-4-19 5:03pm byroot’s blog 2,000 words Rated 2026-5-13 5:21pm - sethherr
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Dear Rubyists: Shopify Isn’t Your EnemyI’ve been meaning to write a post about my perspective on Open Source and corporate entities. I already got the rough outline of it; however, I’m suffering from writer’s block, but more importantly, the whole post is a praise of how Shopify engages with Open Source communities. Hence, given the current climate, I don’t think I could publish it without addressing the elephant in the room first anyway. 2025-10-8 10:03pm byroot’s blog 4,000 words Rated 2025-12-25 6:15am - sethherr
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What’s wrong with the JSON gem API?As I mentioned at the start of my Optimizing Ruby’s JSON series of posts, performance isn’t why I candidated to be the new gem’s maintainer. 2025-8-2 2:03am byroot’s blog 3,000 words Rated 2025-8-5 4:30pm - sethherr
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The Pitchfork StoryA bit more than two years ago, as part of my work in Shopify’s Ruby and Rails Infrastructure team, I released a new Ruby HTTP server called Pitchfork. 2025-3-4 2:03am byroot’s blog 10,000 words Rated 2025-3-11 10:07am - sethherr
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The Mythical IO-Bound Rails AppWhen the topic of Rails performance comes up, it is commonplace to hear that the database is the bottleneck, so Rails applications are IO-bound anyway, hence Ruby performance doesn’t matter that much, and all you need is a healthy dose of concurrency to make your service scale. But how true is this in general? 2025-1-23 2:17am byroot’s blog 2,000 words Rated 2025-1-26 6:42am - sethherr
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Optimizing Ruby’s JSON, Part 4In the previous post, we established that as long as ruby/json wasn’t competitive on micro-benchmarks, public perception wouldn’t change. Since what made ruby/json appear so bad on micro-benchmarks was its setup cost, we had to find ways to reduce it further. 2024-12-29 10:21am byroot’s blog 4,000 words Rated 2025-1-3 9:11am - sethherr
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Optimizing Ruby’s JSON, Part 2In the previous post, I covered my motivations for improving ruby/json’s performance, and detailed the first 4 notable optimizations applied to speed up JSON generation. 2024-12-18 8:05am byroot’s blog 3,000 words Rated 2024-12-18 7:12pm - sethherr
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Optimizing Ruby’s JSON, Part 1I was recently made maintainer of the json gem, and aside from fixing some old bugs, I focused quite a bit on its performance, so that it is now the fastest JSON parser and generator for Ruby on most benchmarks. 2024-12-15 11:19am byroot’s blog 3,000 words Rated 2024-12-18 7:04pm - sethherr
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