Frank van Puffelen
@puf.io
People + Tech = 🎉
🇳🇱 NL born, 🌁 SF based
Previously: Firebase & Flutter @ Google 🔥💙, FlutterFlow 💜
🇳🇱 NL born, 🌁 SF based
Previously: Firebase & Flutter @ Google 🔥💙, FlutterFlow 💜
I finished reading Heaven’s River (Bobiverse #4).
Where the first three books were fast, plot-heavy sci-fi pulp ❤️ - this one slows down and adds depth 🧐.
Still the same universe, but a very different feel.
More ⬇️ in 🧵
1/3
Where the first three books were fast, plot-heavy sci-fi pulp ❤️ - this one slows down and adds depth 🧐.
Still the same universe, but a very different feel.
More ⬇️ in 🧵
1/3
February 15, 2026 at 8:40 PM
I finished reading Heaven’s River (Bobiverse #4).
Where the first three books were fast, plot-heavy sci-fi pulp ❤️ - this one slows down and adds depth 🧐.
Still the same universe, but a very different feel.
More ⬇️ in 🧵
1/3
Where the first three books were fast, plot-heavy sci-fi pulp ❤️ - this one slows down and adds depth 🧐.
Still the same universe, but a very different feel.
More ⬇️ in 🧵
1/3
Reposted by Frank van Puffelen
What's so amazing about Jim Henson as a puppeteer is that he could literally be explaining that Kermit is made out of felt and ping pong balls and yet Kermit still feels alive the whole time he's doing it
February 11, 2026 at 10:03 PM
What's so amazing about Jim Henson as a puppeteer is that he could literally be explaining that Kermit is made out of felt and ping pong balls and yet Kermit still feels alive the whole time he's doing it
🕵👹 In Charles Stross's Laundry Files books, British spies combat occult threats and Lovecraftian horrors using bureaucracy, magic, and advanced tech.
From techie-turned-spy to eldritch gods and apocalyptic conspiracies to the rise of Nyarlathotep.
Book 13 review﹠more 👇
1/3
From techie-turned-spy to eldritch gods and apocalyptic conspiracies to the rise of Nyarlathotep.
Book 13 review﹠more 👇
1/3
February 14, 2026 at 11:15 PM
🕵👹 In Charles Stross's Laundry Files books, British spies combat occult threats and Lovecraftian horrors using bureaucracy, magic, and advanced tech.
From techie-turned-spy to eldritch gods and apocalyptic conspiracies to the rise of Nyarlathotep.
Book 13 review﹠more 👇
1/3
From techie-turned-spy to eldritch gods and apocalyptic conspiracies to the rise of Nyarlathotep.
Book 13 review﹠more 👇
1/3
Great UI stuff on the Wayback Machine....
February 14, 2026 at 7:28 PM
Great UI stuff on the Wayback Machine....
Just finished All These Worlds (Bobiverse #3). The Bob count grows, Earth’s on the brink, and big AI decisions get made. Still not totally my SF style (super short chapters, lotsa plot) but a fun, fast read. Book 4 is longer… so will see if that changes.
puf.io/books/all-the...
puf.io/books/all-the...
February 13, 2026 at 7:44 PM
Just finished All These Worlds (Bobiverse #3). The Bob count grows, Earth’s on the brink, and big AI decisions get made. Still not totally my SF style (super short chapters, lotsa plot) but a fun, fast read. Book 4 is longer… so will see if that changes.
puf.io/books/all-the...
puf.io/books/all-the...
Developer Relations events work often feels intuition-driven: we choose our talks, swag, community, content based on feeling and experience. But you can bring structure to it using the same tool marketers rely on: the adoption funnel.
Read more about it ⬇️🧵
1/3
Read more about it ⬇️🧵
1/3
February 12, 2026 at 8:25 PM
Developer Relations events work often feels intuition-driven: we choose our talks, swag, community, content based on feeling and experience. But you can bring structure to it using the same tool marketers rely on: the adoption funnel.
Read more about it ⬇️🧵
1/3
Read more about it ⬇️🧵
1/3
What a "fun" UX fail. :-/
February 11, 2026 at 7:02 PM
What a "fun" UX fail. :-/
Reposted by Frank van Puffelen
💪 Zero Boilerplate #Java STDIO #MCP Servers with
@langchain4j.dev and @jbang.dev
You just need one #Java file.
JBang installed.
No build!
Then configure your custom MCP server to use with your favorite #AI #Agent harness, like #geminicli and friends!
@langchain4j.dev and @jbang.dev
You just need one #Java file.
JBang installed.
No build!
Then configure your custom MCP server to use with your favorite #AI #Agent harness, like #geminicli and friends!
February 11, 2026 at 3:22 PM
💪 Zero Boilerplate #Java STDIO #MCP Servers with
@langchain4j.dev and @jbang.dev
You just need one #Java file.
JBang installed.
No build!
Then configure your custom MCP server to use with your favorite #AI #Agent harness, like #geminicli and friends!
@langchain4j.dev and @jbang.dev
You just need one #Java file.
JBang installed.
No build!
Then configure your custom MCP server to use with your favorite #AI #Agent harness, like #geminicli and friends!
Reposted by Frank van Puffelen
You helped me a lot back in 2017 when I was building my first Firestore-based app. Thanks!
February 11, 2026 at 7:56 AM
You helped me a lot back in 2017 when I was building my first Firestore-based app. Thanks!
This is now the most common message I get on Stack Overflow:
> Congratulations! You’re in the Top 3 contributors for the Google Cloud Collective
I've been in that top 3 for most of its existence, so a ping when I drop out would be more useful. 😂
> Congratulations! You’re in the Top 3 contributors for the Google Cloud Collective
I've been in that top 3 for most of its existence, so a ping when I drop out would be more useful. 😂
February 11, 2026 at 12:33 AM
This is now the most common message I get on Stack Overflow:
> Congratulations! You’re in the Top 3 contributors for the Google Cloud Collective
I've been in that top 3 for most of its existence, so a ping when I drop out would be more useful. 😂
> Congratulations! You’re in the Top 3 contributors for the Google Cloud Collective
I've been in that top 3 for most of its existence, so a ping when I drop out would be more useful. 😂
⛳🏙️ From hole 9 on, the themes at Stagecoach Greens change to current San Francisco neighborhoods and landmarks.
Pay homage to Sutro Tower. 🗼 Putt your way through a (rather empty) Golden Gate park. ⛳ And visit Chinatown's Dragon's Gate. 🐉
More: puf.io/socials/2026-...
Pay homage to Sutro Tower. 🗼 Putt your way through a (rather empty) Golden Gate park. ⛳ And visit Chinatown's Dragon's Gate. 🐉
More: puf.io/socials/2026-...
February 9, 2026 at 5:01 PM
⛳🏙️ From hole 9 on, the themes at Stagecoach Greens change to current San Francisco neighborhoods and landmarks.
Pay homage to Sutro Tower. 🗼 Putt your way through a (rather empty) Golden Gate park. ⛳ And visit Chinatown's Dragon's Gate. 🐉
More: puf.io/socials/2026-...
Pay homage to Sutro Tower. 🗼 Putt your way through a (rather empty) Golden Gate park. ⛳ And visit Chinatown's Dragon's Gate. 🐉
More: puf.io/socials/2026-...
🚂💰 The first 8 holes at Stagecoach Greens mini-golf in San Francisco take you from the Gold Rush to the railroad era.
Each hole is well developed and themed around the origins of the city. Fun to play and look at.
Be sure to take tons of pictures! 📸
puf.io/socials/2026-...
Each hole is well developed and themed around the origins of the city. Fun to play and look at.
Be sure to take tons of pictures! 📸
puf.io/socials/2026-...
February 8, 2026 at 9:23 PM
🚂💰 The first 8 holes at Stagecoach Greens mini-golf in San Francisco take you from the Gold Rush to the railroad era.
Each hole is well developed and themed around the origins of the city. Fun to play and look at.
Be sure to take tons of pictures! 📸
puf.io/socials/2026-...
Each hole is well developed and themed around the origins of the city. Fun to play and look at.
Be sure to take tons of pictures! 📸
puf.io/socials/2026-...
⛳️ Stagecoach Greens is a miniature golf course in Mission Bay San Francisco. Each hole has its own SF-related theme. 🌁
Nearby are plenty of food and drink stands (including Spark Social), so no need to start your round thirsty or hungry. 🤤
More: puf.io/socials/2026-...
Nearby are plenty of food and drink stands (including Spark Social), so no need to start your round thirsty or hungry. 🤤
More: puf.io/socials/2026-...
February 8, 2026 at 1:43 AM
⛳️ Stagecoach Greens is a miniature golf course in Mission Bay San Francisco. Each hole has its own SF-related theme. 🌁
Nearby are plenty of food and drink stands (including Spark Social), so no need to start your round thirsty or hungry. 🤤
More: puf.io/socials/2026-...
Nearby are plenty of food and drink stands (including Spark Social), so no need to start your round thirsty or hungry. 🤤
More: puf.io/socials/2026-...
📚 Finished reading Timeless (Awaken Online #7) by Travis Bagwell. Time travel, massive battles and a new character (Cady) keep things moving post-Armageddon. A bit formulaic, but still a strong addition. Next book’s out in March - already pre-ordered!
🔖 puf.io/books/timeles...
🔖 puf.io/books/timeles...
February 7, 2026 at 4:23 PM
📚 Finished reading Timeless (Awaken Online #7) by Travis Bagwell. Time travel, massive battles and a new character (Cady) keep things moving post-Armageddon. A bit formulaic, but still a strong addition. Next book’s out in March - already pre-ordered!
🔖 puf.io/books/timeles...
🔖 puf.io/books/timeles...
🎡 Hilaire Hiler’s color wheel 🎨🌈
Step into a circular room at the SF Marine Museum and look up.
Hiler's Prismatarium fills the ceiling with a 30-color wheel from his self-developed chart, each color representing a different emotion or mood.
More: puf.io/socials/2026-...
Step into a circular room at the SF Marine Museum and look up.
Hiler's Prismatarium fills the ceiling with a 30-color wheel from his self-developed chart, each color representing a different emotion or mood.
More: puf.io/socials/2026-...
February 7, 2026 at 12:18 AM
🎡 Hilaire Hiler’s color wheel 🎨🌈
Step into a circular room at the SF Marine Museum and look up.
Hiler's Prismatarium fills the ceiling with a 30-color wheel from his self-developed chart, each color representing a different emotion or mood.
More: puf.io/socials/2026-...
Step into a circular room at the SF Marine Museum and look up.
Hiler's Prismatarium fills the ceiling with a 30-color wheel from his self-developed chart, each color representing a different emotion or mood.
More: puf.io/socials/2026-...
Clipper ships → Clipper Cards 🚢💳
At SF Maritime Museum model Clipper ships show these fastest ships of their time. 🚤
Those Clipper Cards on display? They’re the namesake of today’s transit card, honoring the speed of those ships of yore. 🤯
More: puf.io/socials/2026-...
At SF Maritime Museum model Clipper ships show these fastest ships of their time. 🚤
Those Clipper Cards on display? They’re the namesake of today’s transit card, honoring the speed of those ships of yore. 🤯
More: puf.io/socials/2026-...
February 5, 2026 at 5:06 PM
Clipper ships → Clipper Cards 🚢💳
At SF Maritime Museum model Clipper ships show these fastest ships of their time. 🚤
Those Clipper Cards on display? They’re the namesake of today’s transit card, honoring the speed of those ships of yore. 🤯
More: puf.io/socials/2026-...
At SF Maritime Museum model Clipper ships show these fastest ships of their time. 🚤
Those Clipper Cards on display? They’re the namesake of today’s transit card, honoring the speed of those ships of yore. 🤯
More: puf.io/socials/2026-...
🎨🧜♂️ Throughout the SF Maritime Museum are gorgeous murals and architectural details created as part of the PWA.
Some originals, some (partially) restored, all highlighting marine life﹠the building’s original artistic vision.
Also: those views! 😍
puf.io/socials/2026-...
Some originals, some (partially) restored, all highlighting marine life﹠the building’s original artistic vision.
Also: those views! 😍
puf.io/socials/2026-...
February 5, 2026 at 2:18 AM
🎨🧜♂️ Throughout the SF Maritime Museum are gorgeous murals and architectural details created as part of the PWA.
Some originals, some (partially) restored, all highlighting marine life﹠the building’s original artistic vision.
Also: those views! 😍
puf.io/socials/2026-...
Some originals, some (partially) restored, all highlighting marine life﹠the building’s original artistic vision.
Also: those views! 😍
puf.io/socials/2026-...
Just finished All These Worlds (Bobiverse #3). The Bob count grows, Earth’s on the brink, and big AI decisions get made. Still not totally my SF style (super short chapters, lotsa plot) but a fun, fast read. Book 4 is longer… so will see if that changes.
puf.io/books/all-the...
puf.io/books/all-the...
February 4, 2026 at 4:07 PM
Just finished All These Worlds (Bobiverse #3). The Bob count grows, Earth’s on the brink, and big AI decisions get made. Still not totally my SF style (super short chapters, lotsa plot) but a fun, fast read. Book 4 is longer… so will see if that changes.
puf.io/books/all-the...
puf.io/books/all-the...
📚 I recently read The Amazing Maurice and His Educated Rodents by Terry Pratchett. Rats gain sentience via magical waste. A cat joins them. Chaos and moral dilemmas ensue. 🐀🐈⬛🪈
This is Pratchet's first YA book in Discworld, and won the Carnegie Medal in 2001.
⬇️🧵
1/2
This is Pratchet's first YA book in Discworld, and won the Carnegie Medal in 2001.
⬇️🧵
1/2
February 3, 2026 at 3:23 PM
📚 I recently read The Amazing Maurice and His Educated Rodents by Terry Pratchett. Rats gain sentience via magical waste. A cat joins them. Chaos and moral dilemmas ensue. 🐀🐈⬛🪈
This is Pratchet's first YA book in Discworld, and won the Carnegie Medal in 2001.
⬇️🧵
1/2
This is Pratchet's first YA book in Discworld, and won the Carnegie Medal in 2001.
⬇️🧵
1/2
🌁🖼️ On the ground floor or the SF Maritime Museum, dioramas show how important the waterfront was to San Francisco’s development.
They visually and textually capture what life was like on the waterfront in the city’s early years.
More: puf.io/socials/2026-...
They visually and textually capture what life was like on the waterfront in the city’s early years.
More: puf.io/socials/2026-...
February 2, 2026 at 11:55 PM
🌁🖼️ On the ground floor or the SF Maritime Museum, dioramas show how important the waterfront was to San Francisco’s development.
They visually and textually capture what life was like on the waterfront in the city’s early years.
More: puf.io/socials/2026-...
They visually and textually capture what life was like on the waterfront in the city’s early years.
More: puf.io/socials/2026-...
Seeing this at the bottom of LinkedIn comments makes me sad.
> Some comments may not be displayed in the Most relevant view.
> To see these comments, select Most recent.
I love LinkedIn, but... If you have to explain how to turn off a feature, you've already lost, my friends.
> Some comments may not be displayed in the Most relevant view.
> To see these comments, select Most recent.
I love LinkedIn, but... If you have to explain how to turn off a feature, you've already lost, my friends.
February 2, 2026 at 4:25 PM
Seeing this at the bottom of LinkedIn comments makes me sad.
> Some comments may not be displayed in the Most relevant view.
> To see these comments, select Most recent.
I love LinkedIn, but... If you have to explain how to turn off a feature, you've already lost, my friends.
> Some comments may not be displayed in the Most relevant view.
> To see these comments, select Most recent.
I love LinkedIn, but... If you have to explain how to turn off a feature, you've already lost, my friends.
Reposted by Frank van Puffelen
i made a version of wikipedia you can doomscroll
xikipedia.org
xikipedia.org
February 1, 2026 at 11:43 PM
i made a version of wikipedia you can doomscroll
xikipedia.org
xikipedia.org
Reposted by Frank van Puffelen
Take me down to the Parallax city where the far moves slow and the near moves quickly
February 1, 2026 at 3:40 PM
Take me down to the Parallax city where the far moves slow and the near moves quickly
📚 Finished reading Timeless (Awaken Online #7) by Travis Bagwell. Time travel, massive battles and a new character (Cady) keep things moving post-Armageddon. A bit formulaic, but still a strong addition. Next book’s out in March - already pre-ordered!
🔖 puf.io/books/timeles...
🔖 puf.io/books/timeles...
February 2, 2026 at 2:28 AM
📚 Finished reading Timeless (Awaken Online #7) by Travis Bagwell. Time travel, massive battles and a new character (Cady) keep things moving post-Armageddon. A bit formulaic, but still a strong addition. Next book’s out in March - already pre-ordered!
🔖 puf.io/books/timeles...
🔖 puf.io/books/timeles...