Frank van Puffelen
@puf.io
People + Tech = 🎉
🇳🇱 NL born, 🌁 SF based
Currently: FlutterFlow 💜
Previously: Firebase & Flutter @ Google 🔥💙
🇳🇱 NL born, 🌁 SF based
Currently: FlutterFlow 💜
Previously: Firebase & Flutter @ Google 🔥💙
Some things the Firebase/Firestore console does:
🗂️ Load a list of collections
📑 Load a list of documents
🎧 Attach listeners to show updates
Each of these causes charged document reads, so close the console to avoid them
Full explanation here: stackoverflow.com/qu...
2/2
🗂️ Load a list of collections
📑 Load a list of documents
🎧 Attach listeners to show updates
Each of these causes charged document reads, so close the console to avoid them
Full explanation here: stackoverflow.com/qu...
2/2
November 19, 2025 at 12:51 AM
Some things the Firebase/Firestore console does:
🗂️ Load a list of collections
📑 Load a list of documents
🎧 Attach listeners to show updates
Each of these causes charged document reads, so close the console to avoid them
Full explanation here: stackoverflow.com/qu...
2/2
🗂️ Load a list of collections
📑 Load a list of documents
🎧 Attach listeners to show updates
Each of these causes charged document reads, so close the console to avoid them
Full explanation here: stackoverflow.com/qu...
2/2
New to Firestore and can't explain the document read count from your code? 😬
This usually happens when you keep the Firestore console open during development, as the console also causes charged reads. Close the console to measure just your code.
👇🧵
1/2
This usually happens when you keep the Firestore console open during development, as the console also causes charged reads. Close the console to measure just your code.
👇🧵
1/2
November 19, 2025 at 12:51 AM
New to Firestore and can't explain the document read count from your code? 😬
This usually happens when you keep the Firestore console open during development, as the console also causes charged reads. Close the console to measure just your code.
👇🧵
1/2
This usually happens when you keep the Firestore console open during development, as the console also causes charged reads. Close the console to measure just your code.
👇🧵
1/2
📚🧙⚽️ I just finished Unseen Academicals (audiobook) by Terry Pratchett. Not my favorite Discworld - the football bits didn’t quite land - but the characters (Glenda, Juliet/Jools, Nutt, Vetinari, Rincewind!) were lovely as ever.
★★★★☆
More on: puf.io/books/unseen-...
★★★★☆
More on: puf.io/books/unseen-...
November 18, 2025 at 7:46 PM
📚🧙⚽️ I just finished Unseen Academicals (audiobook) by Terry Pratchett. Not my favorite Discworld - the football bits didn’t quite land - but the characters (Glenda, Juliet/Jools, Nutt, Vetinari, Rincewind!) were lovely as ever.
★★★★☆
More on: puf.io/books/unseen-...
★★★★☆
More on: puf.io/books/unseen-...
🌁 ❤️🗿 We caught another heart statue in the Hearts in San Francisco series!
This time it's the ColorFall of Hope by Deirdre Weinberg, at the Bank of America in Castro.
Go check it out, and (or?) find the rest of my personal list on puf.io/socials/2025-...
This time it's the ColorFall of Hope by Deirdre Weinberg, at the Bank of America in Castro.
Go check it out, and (or?) find the rest of my personal list on puf.io/socials/2025-...
November 18, 2025 at 12:37 AM
🌁 ❤️🗿 We caught another heart statue in the Hearts in San Francisco series!
This time it's the ColorFall of Hope by Deirdre Weinberg, at the Bank of America in Castro.
Go check it out, and (or?) find the rest of my personal list on puf.io/socials/2025-...
This time it's the ColorFall of Hope by Deirdre Weinberg, at the Bank of America in Castro.
Go check it out, and (or?) find the rest of my personal list on puf.io/socials/2025-...
The holidays have hit Union Square (San Francisco)! 🎄🌁
Eight oversized ornaments now line Powell Street, leading up to the 83-foot Christmas tree and ice rink.
If you're in SF this season, take a festive stroll.
More on: puf.io/socials/2025-...
Eight oversized ornaments now line Powell Street, leading up to the 83-foot Christmas tree and ice rink.
If you're in SF this season, take a festive stroll.
More on: puf.io/socials/2025-...
November 17, 2025 at 5:32 PM
The holidays have hit Union Square (San Francisco)! 🎄🌁
Eight oversized ornaments now line Powell Street, leading up to the 83-foot Christmas tree and ice rink.
If you're in SF this season, take a festive stroll.
More on: puf.io/socials/2025-...
Eight oversized ornaments now line Powell Street, leading up to the 83-foot Christmas tree and ice rink.
If you're in SF this season, take a festive stroll.
More on: puf.io/socials/2025-...
🥞 New spot coming to Valencia 👀
SF Mission’s Kitchen - the popular Mission St brunch spot that always has a weekend line - is opening a second location on Valencia. The old Flor de Cafe space is getting a glow-up.
📍1020 Valencia
🗓️ Coming soon
puf.io/socials/2025-...
SF Mission’s Kitchen - the popular Mission St brunch spot that always has a weekend line - is opening a second location on Valencia. The old Flor de Cafe space is getting a glow-up.
📍1020 Valencia
🗓️ Coming soon
puf.io/socials/2025-...
November 17, 2025 at 2:02 AM
🥞 New spot coming to Valencia 👀
SF Mission’s Kitchen - the popular Mission St brunch spot that always has a weekend line - is opening a second location on Valencia. The old Flor de Cafe space is getting a glow-up.
📍1020 Valencia
🗓️ Coming soon
puf.io/socials/2025-...
SF Mission’s Kitchen - the popular Mission St brunch spot that always has a weekend line - is opening a second location on Valencia. The old Flor de Cafe space is getting a glow-up.
📍1020 Valencia
🗓️ Coming soon
puf.io/socials/2025-...
I'm usually not a fan of opera. I just don't like the singing style… at all.
But this weekend we saw the new Monkey King opera in San Francisco and it was so visually and orchestrally spectacular that all my reservations went away. I loved it!
Check it out in SF til end of Nov
But this weekend we saw the new Monkey King opera in San Francisco and it was so visually and orchestrally spectacular that all my reservations went away. I loved it!
Check it out in SF til end of Nov
November 16, 2025 at 5:47 PM
I'm usually not a fan of opera. I just don't like the singing style… at all.
But this weekend we saw the new Monkey King opera in San Francisco and it was so visually and orchestrally spectacular that all my reservations went away. I loved it!
Check it out in SF til end of Nov
But this weekend we saw the new Monkey King opera in San Francisco and it was so visually and orchestrally spectacular that all my reservations went away. I loved it!
Check it out in SF til end of Nov
Yesterday's xkcd is unfortunately way too accurate.
Luckily some places are reversing the trend, but it takes time.
"Car Size" is licensed by Randall Munroe under CC BY-NC-SA 2.5
https://xkcd.com/3167/
Luckily some places are reversing the trend, but it takes time.
"Car Size" is licensed by Randall Munroe under CC BY-NC-SA 2.5
https://xkcd.com/3167/
November 15, 2025 at 7:56 PM
Yesterday's xkcd is unfortunately way too accurate.
Luckily some places are reversing the trend, but it takes time.
"Car Size" is licensed by Randall Munroe under CC BY-NC-SA 2.5
https://xkcd.com/3167/
Luckily some places are reversing the trend, but it takes time.
"Car Size" is licensed by Randall Munroe under CC BY-NC-SA 2.5
https://xkcd.com/3167/
With all the (valid) noise around the security holes that vibe coding may introduce, I went back to double check some of my recent commits for SQL injection and XSS problems.
This first one looks fine at least... 😅
For those wondering: that's Dart code. 💙
This first one looks fine at least... 😅
For those wondering: that's Dart code. 💙
November 15, 2025 at 3:20 PM
With all the (valid) noise around the security holes that vibe coding may introduce, I went back to double check some of my recent commits for SQL injection and XSS problems.
This first one looks fine at least... 😅
For those wondering: that's Dart code. 💙
This first one looks fine at least... 😅
For those wondering: that's Dart code. 💙
I just discovered codewiki.google - a new way to explore git repos - and I'm already having fun with it.
Here's its description of the Firebase JavaScript SDK repo: codewiki.google/gith...
And its view of the (good old) Realtime Database transport layer in there.
1/2
Here's its description of the Firebase JavaScript SDK repo: codewiki.google/gith...
And its view of the (good old) Realtime Database transport layer in there.
1/2
November 15, 2025 at 12:32 AM
I just discovered codewiki.google - a new way to explore git repos - and I'm already having fun with it.
Here's its description of the Firebase JavaScript SDK repo: codewiki.google/gith...
And its view of the (good old) Realtime Database transport layer in there.
1/2
Here's its description of the Firebase JavaScript SDK repo: codewiki.google/gith...
And its view of the (good old) Realtime Database transport layer in there.
1/2
> "If there's one thread through everything I've done, it's this: I want more people to build more apps. Every new builder we empower, whether they write code or drag and drop, expands what's possible in tech." — puf
Hear the full @VGVentures podcast: www.linkedin.com/pos...
Hear the full @VGVentures podcast: www.linkedin.com/pos...
November 14, 2025 at 2:44 AM
> "If there's one thread through everything I've done, it's this: I want more people to build more apps. Every new builder we empower, whether they write code or drag and drop, expands what's possible in tech." — puf
Hear the full @VGVentures podcast: www.linkedin.com/pos...
Hear the full @VGVentures podcast: www.linkedin.com/pos...
🎬 The Blues Brothers isn’t just a cult classic movie - it’s a film I watched every year from my teens to twenties. I just read Daniel de Visé's book about the movie and its creators: mostly John Belushi and Dan Aykroyd.
More and link 👇🧵
More and link 👇🧵
November 13, 2025 at 8:12 PM
🎬 The Blues Brothers isn’t just a cult classic movie - it’s a film I watched every year from my teens to twenties. I just read Daniel de Visé's book about the movie and its creators: mostly John Belushi and Dan Aykroyd.
More and link 👇🧵
More and link 👇🧵
Firebase is bringing Crashlytics support to web apps.
Yes, you read that right: Crashlytics for Web is finally be happening.
Chime in on the RFC here: github.com/firebase/...
Yes, you read that right: Crashlytics for Web is finally be happening.
Chime in on the RFC here: github.com/firebase/...
November 13, 2025 at 1:54 AM
Firebase is bringing Crashlytics support to web apps.
Yes, you read that right: Crashlytics for Web is finally be happening.
Chime in on the RFC here: github.com/firebase/...
Yes, you read that right: Crashlytics for Web is finally be happening.
Chime in on the RFC here: github.com/firebase/...
An adoption funnel may be a useful tool for your team too.
Or maybe you have your own process already. Share it below!
Full write-up + more visuals: puf.io/posts/devrel-...
3/3
Or maybe you have your own process already. Share it below!
Full write-up + more visuals: puf.io/posts/devrel-...
3/3
November 12, 2025 at 7:14 PM
An adoption funnel may be a useful tool for your team too.
Or maybe you have your own process already. Share it below!
Full write-up + more visuals: puf.io/posts/devrel-...
3/3
Or maybe you have your own process already. Share it below!
Full write-up + more visuals: puf.io/posts/devrel-...
3/3
At Firebase we used an adoption funnel and activity map to plan event activities, mapping each action to a user stage - from Awareness to Love. It explained (to leadership) why we were at so many events (>150 per year at peak) and what success looked like.
Link in comment 👇
2/3
Link in comment 👇
2/3
November 12, 2025 at 7:14 PM
At Firebase we used an adoption funnel and activity map to plan event activities, mapping each action to a user stage - from Awareness to Love. It explained (to leadership) why we were at so many events (>150 per year at peak) and what success looked like.
Link in comment 👇
2/3
Link in comment 👇
2/3
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
November 12, 2025 at 7:14 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
🥞 New spot coming to Valencia 👀
SF Mission’s Kitchen - the popular Mission St brunch spot that always has a weekend line - is opening a second location on Valencia. The old Flor de Cafe space is getting a glow-up.
📍1020 Valencia
🗓️ Coming soon
puf.io/socials/2025-...
SF Mission’s Kitchen - the popular Mission St brunch spot that always has a weekend line - is opening a second location on Valencia. The old Flor de Cafe space is getting a glow-up.
📍1020 Valencia
🗓️ Coming soon
puf.io/socials/2025-...
November 11, 2025 at 1:39 AM
🥞 New spot coming to Valencia 👀
SF Mission’s Kitchen - the popular Mission St brunch spot that always has a weekend line - is opening a second location on Valencia. The old Flor de Cafe space is getting a glow-up.
📍1020 Valencia
🗓️ Coming soon
puf.io/socials/2025-...
SF Mission’s Kitchen - the popular Mission St brunch spot that always has a weekend line - is opening a second location on Valencia. The old Flor de Cafe space is getting a glow-up.
📍1020 Valencia
🗓️ Coming soon
puf.io/socials/2025-...
🥩 San Francisco's Tenderloin Museum celebrates the neighborhood’s gritty history, from concert halls and SRO hotels to Herb Caen’s famous line:
> Any city that doesn’t have a Tenderloin isn’t a city at all
Small in size﹠price, but packed with stories.
puf.io/socials/2025-...
> Any city that doesn’t have a Tenderloin isn’t a city at all
Small in size﹠price, but packed with stories.
puf.io/socials/2025-...
November 10, 2025 at 4:56 PM
🥩 San Francisco's Tenderloin Museum celebrates the neighborhood’s gritty history, from concert halls and SRO hotels to Herb Caen’s famous line:
> Any city that doesn’t have a Tenderloin isn’t a city at all
Small in size﹠price, but packed with stories.
puf.io/socials/2025-...
> Any city that doesn’t have a Tenderloin isn’t a city at all
Small in size﹠price, but packed with stories.
puf.io/socials/2025-...
Find your most expensive and slowest Firestore queries with the (relatively) new query insights panel in the Google Cloud console.
I've already been using this on my projects, leading to both a better experience for my users and a lower bill for me! 🙌
cloud.google.com/fir...
I've already been using this on my projects, leading to both a better experience for my users and a lower bill for me! 🙌
cloud.google.com/fir...
November 10, 2025 at 12:45 AM
Find your most expensive and slowest Firestore queries with the (relatively) new query insights panel in the Google Cloud console.
I've already been using this on my projects, leading to both a better experience for my users and a lower bill for me! 🙌
cloud.google.com/fir...
I've already been using this on my projects, leading to both a better experience for my users and a lower bill for me! 🙌
cloud.google.com/fir...
Happy digs into how real-life struggles of the players shape their in-game choices. Great characters, smart pacing - though power levels climb fast. Still: excellent setup for when all storylines converge, which can't be far off.
Full review: puf.io/books/happy--...
3/3
Full review: puf.io/books/happy--...
3/3
November 9, 2025 at 8:25 PM
Happy digs into how real-life struggles of the players shape their in-game choices. Great characters, smart pacing - though power levels climb fast. Still: excellent setup for when all storylines converge, which can't be far off.
Full review: puf.io/books/happy--...
3/3
Full review: puf.io/books/happy--...
3/3
This third separate storyline in the Awaken Online universe (after Jason’s and Fin’s arcs), follows Dom - a college athlete diagnosed with terminal cancer who’s offered access to Awaken Online as therapy.
The character work is rich here, both for Dom and others.
2/3
The character work is rich here, both for Dom and others.
2/3
November 9, 2025 at 8:25 PM
This third separate storyline in the Awaken Online universe (after Jason’s and Fin’s arcs), follows Dom - a college athlete diagnosed with terminal cancer who’s offered access to Awaken Online as therapy.
The character work is rich here, both for Dom and others.
2/3
The character work is rich here, both for Dom and others.
2/3
📚 Awaken Online: Happy by Travis Bagwell
(aka Book #5.5 in the series)
★★★★★
This is the 12th book I’ve read in this VR-litRPG universe - and one of the best yet. Here’s why 👇
1/3
(aka Book #5.5 in the series)
★★★★★
This is the 12th book I’ve read in this VR-litRPG universe - and one of the best yet. Here’s why 👇
1/3
November 9, 2025 at 8:24 PM
📚 Awaken Online: Happy by Travis Bagwell
(aka Book #5.5 in the series)
★★★★★
This is the 12th book I’ve read in this VR-litRPG universe - and one of the best yet. Here’s why 👇
1/3
(aka Book #5.5 in the series)
★★★★★
This is the 12th book I’ve read in this VR-litRPG universe - and one of the best yet. Here’s why 👇
1/3
📖🇷🇺 Finished Crime and Punishment - my third Russian classic after Brothers Karamazov and War﹠Peace. I started for the cost-per-page, but stayed for the story. The Audible narration grew on me, and the ending tied things up nicely.
★★★★★
Review: puf.io/books/crime-a...
★★★★★
Review: puf.io/books/crime-a...
November 8, 2025 at 3:15 PM
📖🇷🇺 Finished Crime and Punishment - my third Russian classic after Brothers Karamazov and War﹠Peace. I started for the cost-per-page, but stayed for the story. The Audible narration grew on me, and the ending tied things up nicely.
★★★★★
Review: puf.io/books/crime-a...
★★★★★
Review: puf.io/books/crime-a...
Mission District flashback: The old Lucca Ravioli spot on 22nd/Valencia is now The Corner Store with pop-ups curated by Square. The York Street Collective is there through Dec and has art, coffee & non-alcoholic cocktails. Don’t miss it!
More on: puf.io/socials/2025-...
More on: puf.io/socials/2025-...
November 7, 2025 at 10:22 PM
Mission District flashback: The old Lucca Ravioli spot on 22nd/Valencia is now The Corner Store with pop-ups curated by Square. The York Street Collective is there through Dec and has art, coffee & non-alcoholic cocktails. Don’t miss it!
More on: puf.io/socials/2025-...
More on: puf.io/socials/2025-...
🪵 Six giant wooden trolls have taken over Filoli, a historic estate 45 min south of SF. The sculptures by Thomas Dambo roam its gardens and redwood forest through Nov 10 - go meet them before they move on! 🌳
Full post with more pics: puf.io/socials/2025-...
Full post with more pics: puf.io/socials/2025-...
November 6, 2025 at 10:44 PM
🪵 Six giant wooden trolls have taken over Filoli, a historic estate 45 min south of SF. The sculptures by Thomas Dambo roam its gardens and redwood forest through Nov 10 - go meet them before they move on! 🌳
Full post with more pics: puf.io/socials/2025-...
Full post with more pics: puf.io/socials/2025-...