Dan Siemon
@coverfire.com
Networking geek, product manager, start-up founder.
https://www.coverfire.com
Please take a look at https://bsky.app/profile/coverfire.com/feed/networking feed if you are interested in computer networking.
https://www.coverfire.com
Please take a look at https://bsky.app/profile/coverfire.com/feed/networking feed if you are interested in computer networking.
Reposted by Dan Siemon
If a restaurant served you a perfectly-cooked steal with a cockroach on it, would your feedback be "It was perfectly cooked, but there was a cockroach on it"?
Or would you just see the cockroach and conclude the steak's inedible?
In case you're wondering what impact bugs have on user feedback.
Or would you just see the cockroach and conclude the steak's inedible?
In case you're wondering what impact bugs have on user feedback.
January 10, 2026 at 11:17 AM
If a restaurant served you a perfectly-cooked steal with a cockroach on it, would your feedback be "It was perfectly cooked, but there was a cockroach on it"?
Or would you just see the cockroach and conclude the steak's inedible?
In case you're wondering what impact bugs have on user feedback.
Or would you just see the cockroach and conclude the steak's inedible?
In case you're wondering what impact bugs have on user feedback.
Reposted by Dan Siemon
I've published a post on better prompting for LLMs: "Prompting 101: Show, don't tell"
This is inspired by a similar post from an internal prompt engineering training series I wrote for Mercury:
www.haskellforall.com/2026/01/prom...
This is inspired by a similar post from an internal prompt engineering training series I wrote for Mercury:
www.haskellforall.com/2026/01/prom...
Prompting 101: Show, don’t tell
Prompting 101: Show, don’t tell A really common mistake I see people make when writing prompts is starting t...
www.haskellforall.com
January 9, 2026 at 8:24 PM
I've published a post on better prompting for LLMs: "Prompting 101: Show, don't tell"
This is inspired by a similar post from an internal prompt engineering training series I wrote for Mercury:
www.haskellforall.com/2026/01/prom...
This is inspired by a similar post from an internal prompt engineering training series I wrote for Mercury:
www.haskellforall.com/2026/01/prom...
Reposted by Dan Siemon
I joined the Oxide and Friends annual predictions podcast episode this week - here are my 1, 3 and 6 year predictions for AI and LLMs (and Kākāpō parrots) simonwillison.net/2026/Jan/8/l...
January 8, 2026 at 7:45 PM
I joined the Oxide and Friends annual predictions podcast episode this week - here are my 1, 3 and 6 year predictions for AI and LLMs (and Kākāpō parrots) simonwillison.net/2026/Jan/8/l...
Reposted by Dan Siemon
New year's resolution, engage with open source developers on our new Bluesky account. ✨
January 6, 2026 at 9:54 PM
New year's resolution, engage with open source developers on our new Bluesky account. ✨
2026: The Year The IDE Died — Steve Yegge & Gene Kim, Authors, Vibe Coding
YouTube video by AI Engineer
youtube.com
December 26, 2025 at 5:10 PM
Reposted by Dan Siemon
The only true way is the Canadian way
(As much as I wish it was a joke, it is in fact not one and this is exactly how it works here)
(As much as I wish it was a joke, it is in fact not one and this is exactly how it works here)
December 25, 2025 at 12:30 AM
The only true way is the Canadian way
(As much as I wish it was a joke, it is in fact not one and this is exactly how it works here)
(As much as I wish it was a joke, it is in fact not one and this is exactly how it works here)
Reposted by Dan Siemon
TSX year-to-date: ⬆️ 27.5%
S&P500 year-to-date: ⬆️ 16.5%
S&P500 year-to-date: ⬆️ 16.5%
December 20, 2025 at 3:39 PM
TSX year-to-date: ⬆️ 27.5%
S&P500 year-to-date: ⬆️ 16.5%
S&P500 year-to-date: ⬆️ 16.5%
Reposted by Dan Siemon
If you’ve felt safer sending a message because you sent it on Signal, please support our work. As a nonprofit, Signal exists because of your donations.
In the app: Settings > Donate
On the web: Signal.org/donate
In the app: Settings > Donate
On the web: Signal.org/donate
Donate to Signal Private Messenger
Your donation helps pay for the development, servers, and bandwidth of an app used by millions around the world for private and instantaneous communication. Please make a donation today.
Signal.org
December 17, 2025 at 6:07 PM
If you’ve felt safer sending a message because you sent it on Signal, please support our work. As a nonprofit, Signal exists because of your donations.
In the app: Settings > Donate
On the web: Signal.org/donate
In the app: Settings > Donate
On the web: Signal.org/donate
Read “What Actually Happened When We Turned On HTTP/3“ by The Speed Engineer on Medium: medium.com/@chopra.kant... #networknook
What Actually Happened When We Turned On HTTP/3
We dropped mobile p99 latency by 40%. Then our CDN stopped talking to half our users.
medium.com
December 17, 2025 at 12:13 AM
Read “What Actually Happened When We Turned On HTTP/3“ by The Speed Engineer on Medium: medium.com/@chopra.kant... #networknook
Reposted by Dan Siemon
2025 is coming to end and some people who claim not to be fascists are still associating themselves with fascist outlets like X.
I claim, perhaps charitably, that it's because they don't understand how the internet works. Either way, this needs to change.
berjon.com/fascintern-m...
I claim, perhaps charitably, that it's because they don't understand how the internet works. Either way, this needs to change.
berjon.com/fascintern-m...
Fascintern Media
We are facing a coordinated international fascist movement that works with explicit backing from Moscow, Washington, and tech monopolies, and is propagating itself through its own media apparatus. Yet...
berjon.com
December 9, 2025 at 8:31 PM
2025 is coming to end and some people who claim not to be fascists are still associating themselves with fascist outlets like X.
I claim, perhaps charitably, that it's because they don't understand how the internet works. Either way, this needs to change.
berjon.com/fascintern-m...
I claim, perhaps charitably, that it's because they don't understand how the internet works. Either way, this needs to change.
berjon.com/fascintern-m...
Yes. I have an original and 360. The original is starting to fail, new ones are soo expensive now.
November 17, 2025 at 7:43 PM
Yes. I have an original and 360. The original is starting to fail, new ones are soo expensive now.
I've built a networking-focused feed called Network Nook that matched this post. Please take a look and I'd appreciate any feedback and
bsky.app/profile/did:...
bsky.app/profile/did:...
November 8, 2025 at 3:11 PM
I've built a networking-focused feed called Network Nook that matched this post. Please take a look and I'd appreciate any feedback and
bsky.app/profile/did:...
bsky.app/profile/did:...
I've built a networking-focused feed called Network Nook that matched this post. Please take a look and I'd appreciate any feedback and
bsky.app/profile/did:...
bsky.app/profile/did:...
November 8, 2025 at 3:10 PM
I've built a networking-focused feed called Network Nook that matched this post. Please take a look and I'd appreciate any feedback and
bsky.app/profile/did:...
bsky.app/profile/did:...
I've built a networking-focused feed called Network Nook that matched this post. Please take a look and I'd appreciate any feedback and
bsky.app/profile/did:...
bsky.app/profile/did:...
November 8, 2025 at 3:09 PM
I've built a networking-focused feed called Network Nook that matched this post. Please take a look and I'd appreciate any feedback and
bsky.app/profile/did:...
bsky.app/profile/did:...
I've built a networking-focused feed called Network Nook that matched this post. Please take a look and I'd appreciate any feedback and
bsky.app/profile/did:...
bsky.app/profile/did:...
November 8, 2025 at 3:09 PM
I've built a networking-focused feed called Network Nook that matched this post. Please take a look and I'd appreciate any feedback and
bsky.app/profile/did:...
bsky.app/profile/did:...
Reposted by Dan Siemon
DNS over QUIC sounds good:
https://dl.acm.org/doi/10.1145/3517745.3561445
"With DoQ being only ~2% slower than DoUDP, encrypted DNS becomes much more appealing for the Web."
https://dl.acm.org/doi/10.1145/3517745.3561445
"With DoQ being only ~2% slower than DoUDP, encrypted DNS becomes much more appealing for the Web."
November 7, 2025 at 11:43 AM
DNS over QUIC sounds good:
https://dl.acm.org/doi/10.1145/3517745.3561445
"With DoQ being only ~2% slower than DoUDP, encrypted DNS becomes much more appealing for the Web."
https://dl.acm.org/doi/10.1145/3517745.3561445
"With DoQ being only ~2% slower than DoUDP, encrypted DNS becomes much more appealing for the Web."
More QUIC goodness.
blog.cloudflare.com/async-quic-a...
Cloudflare has open-sourced the tokio-quiche library, which combines the QUIC implementation they created six years ago with the Rust asynchronous runtime Tokio, to facilitate easy support for HTTP/3 and QUIC.
Cloudflare has open-sourced the tokio-quiche library, which combines the QUIC implementation they created six years ago with the Rust asynchronous runtime Tokio, to facilitate easy support for HTTP/3 and QUIC.
Async QUIC and HTTP:3 made easy- tokio-quiche is now open-source
We’re excited to announce the open sourcing of tokio-quiche, our async QUIC library built on quiche and tokio. Relied upon in our services such as iCloud Private Relay and our next-generation Oxy-base...
blog.cloudflare.com
November 8, 2025 at 2:57 PM
More QUIC goodness.