Bryan Cantrill
@bcantrill.bsky.social
Co-founder and CTO of Oxide Computer Company. According to Field of Schemes, "tech exec and Oakland A's fan" -- but more of an Oakland Ballers fan now.
Pinned
Bryan Cantrill
@bcantrill.bsky.social
· Dec 6
Your intellectual fly is open | The Observation Deck
bcantrill.dtrace.org
Your intellectual fly is open
bcantrill.dtrace.org/2025/12/05/y...
bcantrill.dtrace.org/2025/12/05/y...
I am currently at a Dagstuhl seminar (my first!), "Trustworthy System Architectures for the Age of Custom Silicon." Slides for
talk yesterday (not recorded, unfortunately): speakerdeck.com/bcantrill/so...
talk yesterday (not recorded, unfortunately): speakerdeck.com/bcantrill/so...
Hardware/Software Co-design: Motivations and reflections with respect to security
My talk at a Dagstuhl seminar in January 2026 ("Trustworthy System Architectures for the Age of Custom Silicon"). Talk was not recorded.
speakerdeck.com
January 20, 2026 at 7:36 PM
I am currently at a Dagstuhl seminar (my first!), "Trustworthy System Architectures for the Age of Custom Silicon." Slides for
talk yesterday (not recorded, unfortunately): speakerdeck.com/bcantrill/so...
talk yesterday (not recorded, unfortunately): speakerdeck.com/bcantrill/so...
Reposted by Bryan Cantrill
January 17, 2026 at 4:05 AM
At @oxide.computer, we pride ourselves on terse performance reviews: we have exceeded expectations!
January 17, 2026 at 3:22 AM
At @oxide.computer, we pride ourselves on terse performance reviews: we have exceeded expectations!
Wearing my Gas Town socks today
January 15, 2026 at 8:00 PM
Wearing my Gas Town socks today
Can't stop thinking about how bonkers this is -- it's like Urbit as imagined by Richard Scarry
January 14, 2026 at 9:02 PM
Can't stop thinking about how bonkers this is -- it's like Urbit as imagined by Richard Scarry
"Execution in the Kingdom of Nouns" ca. 2026
I had an XSS issue I wanted fixed quickly, so naturally I had my Bishop fabricate Claims on a neighboring County. Long story short, I have reconstituted the Roman Empire as a vassal state of the Mongol Khanate and I *still* have the XSS issue
January 14, 2026 at 8:20 PM
"Execution in the Kingdom of Nouns" ca. 2026
Reposted by Bryan Cantrill
On Monday, @sunshowers.io and @davidcrespo.bsky.social joined me and @bcantrill.bsky.social to talk about their use of LLMs for building software--not to make vibe-coded one-offs, but to build much *more* robust systems software.
Oxide and Friends 1/12/2026 -- Engineering Rigor in the LLM Age
YouTube video by Oxide Computer Company
youtu.be
January 14, 2026 at 3:55 PM
On Monday, @sunshowers.io and @davidcrespo.bsky.social joined me and @bcantrill.bsky.social to talk about their use of LLMs for building software--not to make vibe-coded one-offs, but to build much *more* robust systems software.
Today, @ahl.bsky.social and I are going to take on a hot topic: what does engineering rigor look like in the age of LLMs? We will be joined by Oxide engineers who have been at the forefront of using LLMs to increase the rigor in their own work. Join us, 5p Pacific!
discord.gg/QrcKGTTPrF?e...
discord.gg/QrcKGTTPrF?e...
Join the Oxide Computer Company & Friends Discord Server!
The Oxide Computer Company and friends; home of the Oxide and Friends podcast. | 4794 members
discord.gg
January 12, 2026 at 6:53 PM
Today, @ahl.bsky.social and I are going to take on a hot topic: what does engineering rigor look like in the age of LLMs? We will be joined by Oxide engineers who have been at the forefront of using LLMs to increase the rigor in their own work. Join us, 5p Pacific!
discord.gg/QrcKGTTPrF?e...
discord.gg/QrcKGTTPrF?e...
I just hope that those who believe that LLMs have "stolen" their open source software took the opportunity to file an amicus brief in support of Oracle in Google v. Oracle
January 11, 2026 at 9:59 PM
I just hope that those who believe that LLMs have "stolen" their open source software took the opportunity to file an amicus brief in support of Oracle in Google v. Oracle
Added an "LLM shaming" section to RFD 576
rfd.shared.oxide.computer/rfd/0576#_ll...
rfd.shared.oxide.computer/rfd/0576#_ll...
January 10, 2026 at 9:41 PM
Added an "LLM shaming" section to RFD 576
rfd.shared.oxide.computer/rfd/0576#_ll...
rfd.shared.oxide.computer/rfd/0576#_ll...
Apropos of the current madness of publicly shaming LLM use, what punch cards teach us about AI risk (2023): bcantrill.dtrace.org/2023/11/26/w...
What punch cards teach us about AI risk | The Observation Deck
bcantrill.dtrace.org
January 10, 2026 at 8:29 PM
Apropos of the current madness of publicly shaming LLM use, what punch cards teach us about AI risk (2023): bcantrill.dtrace.org/2023/11/26/w...
Reposted by Bryan Cantrill
I've been sitting with the discomfort here a bunch, and to me this is it, right? What is being suggested is that I engage in an act of self-flagellation (resolving thousands of lines of merge conflicts by hand) because the richest man in the world uses some of the same underlying tech to peddle CSAM
![Screenshot of Claude Code terminal interface showing a migration progress checklist
The terminal displays a dark-themed interface with two tabs labeled "1: fg" and "2: ~" at the top. The main content shows a detailed task list for what appears to be a Rust codebase migration project.
The upper portion (lines 47-54) shows completed tasks highlighted in green, including items like "PrivateIpStackCreate enum," "InstanceNetworkInterfaceCreate with ip_config," and creating dual_stack_nics files for floating_ip.rs and probe.rs.
Below that, lines 43-54 show another set of completed tasks (marked with [x]) in a green-highlighted block, detailing work on dual_stack_nics/instance.rs including IpAssignment<T> enum, type aliases, and various struct implementations.
The middle section shows "Phase 4: Add Types to silo_project_ip_version_and_pool_type" with a file being written containing Mozilla Public License headers and module documentation about adding ip_version and pool_type fields to SiloIpPool responses.
At the bottom, a "Cerebrating..." status bar shows the AI is thinking (1m 30s elapsed, 5.7k tokens). Below this is a checklist of remaining tasks including completing dual_stack_nics/instance.rs, creating version module files, updating latest.rs, resolving conflicts, and running cargo checks.
The footer shows "accept edits on (shift+tab to cycle)" indicating pending code changes awaiting user approval.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:sl3g3nhnad34sfhjnqdivbzd/bafkreiep35hi26nxyemiy4v2tvo7mlkftnbwice3rvs3phucmlnbzguw3q@jpeg)
January 10, 2026 at 6:55 PM
I've been sitting with the discomfort here a bunch, and to me this is it, right? What is being suggested is that I engage in an act of self-flagellation (resolving thousands of lines of merge conflicts by hand) because the richest man in the world uses some of the same underlying tech to peddle CSAM
Reposted by Bryan Cantrill
In the final installment of our New Year's look back at Monktoberfest 2025, @bcantrill.bsky.social draws on decades of experience and more of engineering history to explore how accountability, transparency, and human fallibility shape the systems we build.
Trust as Infrastructure | Bryan Cantrill | Monktoberfest 2025
Software runs on trust — not just in the code, but in the people who write it. In this riveting Monktoberfest talk, Bryan explores how accountability, transparency, and human fallibility shape the…
youtu.be
January 9, 2026 at 6:31 PM
In the final installment of our New Year's look back at Monktoberfest 2025, @bcantrill.bsky.social draws on decades of experience and more of engineering history to explore how accountability, transparency, and human fallibility shape the systems we build.
The right place at the right time
bcantrill.dtrace.org/2026/01/08/t...
bcantrill.dtrace.org/2026/01/08/t...
The right place at the right time | The Observation Deck
bcantrill.dtrace.org
January 8, 2026 at 9:32 PM
The right place at the right time
bcantrill.dtrace.org/2026/01/08/t...
bcantrill.dtrace.org/2026/01/08/t...
Reposted by Bryan Cantrill
New year, new Oxide and Friends predictions episode! @bcantrill.bsky.social and I were joined by @simonwdc.bsky.social and @steveklabnik.com to predict 1, 3, and 6 years into the future. Winners from previous years? Apple in and out of the VR/AR business? Looking prescient! Agents not a thing? Sure!
Oxide and Friends 1/5/2026 -- Predictions 2026!!
YouTube video by Oxide Computer Company
youtu.be
January 7, 2026 at 6:13 PM
New year, new Oxide and Friends predictions episode! @bcantrill.bsky.social and I were joined by @simonwdc.bsky.social and @steveklabnik.com to predict 1, 3, and 6 years into the future. Winners from previous years? Apple in and out of the VR/AR business? Looking prescient! Agents not a thing? Sure!
Reposted by Bryan Cantrill
By introducing a vendor-neutral orchestration layer, #Kubernetes shattered the "API lock-in" that once made @awscloud.bsky.social’s market dominance appear insurmountable.
By @joabj.bsky.social feat. @bcantrill.bsky.social
By @joabj.bsky.social feat. @bcantrill.bsky.social
Bryan Cantrill: How Kubernetes Broke the AWS Cloud Monopoly
By introducing a vendor-neutral orchestration layer, Kubernetes shattered the "API lock-in" that once made AWS’s market dominance appear insurmountable.
bit.ly
January 6, 2026 at 5:00 PM
By introducing a vendor-neutral orchestration layer, #Kubernetes shattered the "API lock-in" that once made @awscloud.bsky.social’s market dominance appear insurmountable.
By @joabj.bsky.social feat. @bcantrill.bsky.social
By @joabj.bsky.social feat. @bcantrill.bsky.social
Reposted by Bryan Cantrill
Piotr's latest picks for writethat.blog ...
- In defense of lock poisoning in Rust //
@sunshowers.io
- Why we built Lightpanda in Zig // Francis Bouvier - Lightpanda
- Your intellectual fly is open //
@bcantrill.bsky.social
-Do not optimize away // matklad
- In defense of lock poisoning in Rust //
@sunshowers.io
- Why we built Lightpanda in Zig // Francis Bouvier - Lightpanda
- Your intellectual fly is open //
@bcantrill.bsky.social
-Do not optimize away // matklad
January 6, 2026 at 9:58 PM
Piotr's latest picks for writethat.blog ...
- In defense of lock poisoning in Rust //
@sunshowers.io
- Why we built Lightpanda in Zig // Francis Bouvier - Lightpanda
- Your intellectual fly is open //
@bcantrill.bsky.social
-Do not optimize away // matklad
- In defense of lock poisoning in Rust //
@sunshowers.io
- Why we built Lightpanda in Zig // Francis Bouvier - Lightpanda
- Your intellectual fly is open //
@bcantrill.bsky.social
-Do not optimize away // matklad
The first Monday of the new year means... predictions! Thrilled to announce that @simonwillison.net will again be joining @ahl.bsky.social and me for 1- 3- and 6-year predictions. Bring your own predictions and join us today at a special time: 4p Pacific!
discord.gg/QrcKGTTPrF?e...
discord.gg/QrcKGTTPrF?e...
Join the Oxide Computer Company & Friends Discord Server!
The Oxide Computer Company and friends; home of the Oxide and Friends podcast. | 4687 members
discord.gg
January 5, 2026 at 4:48 PM
The first Monday of the new year means... predictions! Thrilled to announce that @simonwillison.net will again be joining @ahl.bsky.social and me for 1- 3- and 6-year predictions. Bring your own predictions and join us today at a special time: 4p Pacific!
discord.gg/QrcKGTTPrF?e...
discord.gg/QrcKGTTPrF?e...
The state of LLMs in 2026, in all of its weird glory: at once impressive, disconcerting, acutely limited -- and unfailingly polite
January 1, 2026 at 8:50 PM
The state of LLMs in 2026, in all of its weird glory: at once impressive, disconcerting, acutely limited -- and unfailingly polite
Love your customers bcantrill.dtrace.org/2025/12/31/l...
Love your customers | The Observation Deck
bcantrill.dtrace.org
December 31, 2025 at 8:11 PM
Love your customers bcantrill.dtrace.org/2025/12/31/l...
In a move eerily reminiscent of my own accurate-but-wrong three-year prediction of the iPhone in 2003, @ahl.bsky.social wanted to predict vibe coding in 2023 (!) -- but then dismissed it because "I don't know who is going to debug that" youtu.be/6nQbe9EYFaw?...
Oxide and Friends 1/9/2023 -- Predictions 2023!
YouTube video by Oxide Computer Company
youtu.be
December 27, 2025 at 9:24 PM
In a move eerily reminiscent of my own accurate-but-wrong three-year prediction of the iPhone in 2003, @ahl.bsky.social wanted to predict vibe coding in 2023 (!) -- but then dismissed it because "I don't know who is going to debug that" youtu.be/6nQbe9EYFaw?...
Reposted by Bryan Cantrill
cool benefit of machine-executable specs -- they can be used by everyone, not just the author
December 22, 2025 at 8:22 PM
cool benefit of machine-executable specs -- they can be used by everyone, not just the author
Reposted by Bryan Cantrill
What was the Dotcom Boom like? Bryan Cantrill (@bcantrill.bsky.social - cofounder and CTO at Oxide):
"One of my early life lessons: that boom will go on longer than you think possible, and when it switches, it will collapse faster than you can fathom."
"One of my early life lessons: that boom will go on longer than you think possible, and when it switches, it will collapse faster than you can fathom."
December 21, 2025 at 7:56 PM
What was the Dotcom Boom like? Bryan Cantrill (@bcantrill.bsky.social - cofounder and CTO at Oxide):
"One of my early life lessons: that boom will go on longer than you think possible, and when it switches, it will collapse faster than you can fathom."
"One of my early life lessons: that boom will go on longer than you think possible, and when it switches, it will collapse faster than you can fathom."
Reposted by Bryan Cantrill
Last OxF of the year! @bcantrill.bsky.social and I reflected on the year of Oxide and Friends. Big theme this year? Bugs and debugging. Or as ChatGPT put it inaccurately, "filled with painful specificity and earned insight". Sure, whatever! youtu.be/kGNoSYQchS8
Oxide and Friends 12/15/2025 -- OxF 2025 Wrap-Up
YouTube video by Oxide Computer Company
youtu.be
December 21, 2025 at 12:29 AM
Last OxF of the year! @bcantrill.bsky.social and I reflected on the year of Oxide and Friends. Big theme this year? Bugs and debugging. Or as ChatGPT put it inaccurately, "filled with painful specificity and earned insight". Sure, whatever! youtu.be/kGNoSYQchS8