iiinova — where your digital self keeps evolving

Jan Lehnardt @janl.bsky.narrativ.es · 14/10/2026

Guys, I’ve found the missing DRAM!

Jan Lehnardt @janl.bsky.narrativ.es · 13/07/2026

“ @couchdb.bsky.social informed a lot of the concepts that have inspired us to design atproto” — @pfrazee.com , Bsky CTO at @localfirstconf.com

White man on stage on a dark room, presentation slide in the background: CouchDB almost had it right.

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Jan Lehnardt @janl.bsky.narrativ.es · 12/07/2026

Hanging out with Dan Ingalls at @localfirstconf.com. No biggie

Elder white man in light blue shirt and dark blue shorts

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Jan Lehnardt @janl.bsky.narrativ.es · 08/06/2026

Find me at @berlinbuzzwords.de today and tomorrow. My talk about how we got 10x performance gains out of @couchdb.bsky.social for a AAA game launch is at 16:30 ✌️

Selfie with base cap , sunglasses and mustard yellow tshirt with a pixelated classic mac with “hypercritical” printed below. Ref lanyard and purple/pink attendee badge.

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Jan Lehnardt @janl.bsky.narrativ.es · 21/05/2026

Saw Sasha Velour tonight at Admiralspalast in Berlin. It was my first for-real live drag show and I’m 100% the cliché to say it changed me. If you have the remote opportunity to see this show, you owe it to yourself and go 💖💅😭🌈🦄 www.sashavelour.com

Drag queen Sasha Velour in black dress and stylish hat so ging in ecstasy in front of a black background

Sasha Velour in an ultra wide hip gown, all white singing in purple lighting

Saaha in an all sequence dress receiving a standing ovation

Sasha Velour and Barbie Breakout congratulating each other on a show well done, pink lighting abounds.

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Jan Lehnardt @janl.bsky.narrativ.es · 04/05/2026

May the forth be with you, star destroyer hovering and all.

Wide grassy meadow with dramatic clouds above, including a triangle shaped dark grey one.

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Jan Lehnardt @janl.bsky.narrativ.es · 29/04/2026

Welcome to the club/cult. It’s the best thing we have done for a GF diet. Meet some of my round boys.

Round loaf of gluten free sourdough bread with long cuts on top

Round loaf of gluten free sourdough bread with long cuts on top and poppy seeds

Oblong sour dough bread woth long diagonal cut

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Jan Lehnardt @janl.bsky.narrativ.es · 19/04/2026

Making good use of my free will on a rainy Sunday. First attempt with a bare minimum of bricks available to me at the moment. ✋🔺🤚

Angine de Poutrine in Lego. Two polkadot clown masks with exaggerated noses, one white with black dots on black background, one black with white on white background. Eyes and triangle or aments in yellow.

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Jan Lehnardt @janl.bsky.narrativ.es · 16/03/2026

Find me at #FOSSBack o/ Talk to me about: - whatever fun thing that occupies you right now - the sovereign tech agency and contributing to free and open source software - offline capable apps My talk is today at 12:10 :)

Selfie with glasses, orange ffp2 mask, light grey tshirt, pink lanyard

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Jan Lehnardt @janl.bsky.narrativ.es · 19/02/2026

I wrote up our experience eating 100% #vegan in #japan on our recent trip. I have 23 restaurant recs for you covering 13 cities, towns & villages. tl;dr: I has gotten a lot better in the last 5 years and I have eaten some of my favourite food of all time. writing.jan.io/2026/02/15/v...

appetizer platter with quiche, carrot salad, vegan cheese slices, green lead salad, tiny mac and cheese bowl and pickeld cabbage salad

20cm high veggie burger with thumb for scale

5cm thick sandwich with salad and avocado

fermented tomato-based ramen with vegan pork chops

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Jan Lehnardt @janl.bsky.narrativ.es · 31/01/2026

Ohai #fosdem, please come and say hi if you see me o/

Selfie of a middle aged man standing in front of a university building. Wears a winter hat, jacket, striped shawl and bright orange ffp2 mask

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Jan Lehnardt @janl.bsky.narrativ.es · 25/01/2026

Love the choice of slowly getting poisened by either CO2 or PM2,5 for days on end. Thank fuck for air filters, but this is awful. woods.secretbearsociety.org/@Maker/11595...

Air quality map showing two colours for bad and very bad, ver bad covers the lower third with a spike in the middle and the top right. The rest is just bad.

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Jan Lehnardt @janl.bsky.narrativ.es · 23/11/2025

For me it was on Netscape Navigator 3.x, so a bit more modern, but it’d have been 1997 or 98.

Screenshot of 1990s Netscape navigator view source function.

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Jan Lehnardt @janl.bsky.narrativ.es · 09/11/2025

McLusky do have the best swag. The show was fantastic, too.

Black tote bag with white text: my bag is bigger than your bag, McLusky

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Jan Lehnardt @janl.bsky.narrativ.es · 05/11/2025

Hey #Øredev my friend Alex is talking about The UI/UX Benefits and Trade-Offs of Local-First Apps today at 13:55 in room Curie. Alex helped coin the term Offline-First and has been designing & building offline web and native apps since 2013, you’ll learn a lot! oredev.org/line-up/91fe...

The UI/UX Benefits and Trade-Offs of Local-First Apps

A realist, zero-marketing overview of what building UIs for Local-First apps is actually like. Local- and Offline-First apps prioritise using on-device data, which can be crucial in health care, field work and disaster relief use-cases, or if you just want to ship a really fast user experience. The concepts are compelling and capable, but the reality of building with them can often be more complex than anticipated.

On the one hand, you get delightful performance and resilience wins as well as network independence. On the other you have the unfamiliar mental models for sync, conflicts, out-of-order updates, as well as other limitations to contend with. We look at how to pick the correct data sync primitives to design UIs for this powerful paradigm.

My team and I have been building offline-capable apps since 2013, and I’ll share my experiences from a wide variety of projects.

This talk will help you pick your battles and win them.

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Jan Lehnardt @janl.bsky.narrativ.es · 05/10/2025

Neat, Germany is earlier today produced 97% of its ~50GW energy from renewables. Roughly 2/3 wind and 1/3 solar.

Diagram showing carbon intensity of 53g per kWh and 97% of total energy generation done by renewables for Oct 5, 12pm.

Bar chart showing the installed capacity and current usage of renewable energy. Values as described in the post.

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Jan Lehnardt @janl.bsky.narrativ.es · 06/08/2025

If Parks & Rec happened today, Tom Haverford would just be an LLM, sorry, government agent.

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Jan Lehnardt @janl.bsky.narrativ.es · 25/07/2025

JSConfs around the world then started using variations (to much delight, see if you can guess the countries) and the rest of the ecosystem followed suit.

A grid of JSConf logos from around the world:

1.1 JSConf North America
1.2 JSConf España
1.3 JSConf Chile
1.4 JSConf India

2.1 JSConf México
2.2 JSConf Budapest
2.3 JSConf Hawaii
2.4 JSConf Korea

3.1 JSConf Japan
3.2 JSConf Europe
3.3 JSConf Australia
3.4 JSConf Argentina

4.1 JSConf Brazil
4.2 JSConf Colombia
4.3 JSConf Asia
4.4 JSConf Iceland

5.1 JSConf Uruguay
5.2 JSConf Belgium
5.3 JSConf China

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Jan Lehnardt @janl.bsky.narrativ.es · 25/07/2025

Chris also invented the “JS Logo”. A the time (before React, TypeScript, etc), I did not think we could as a community agree on a logo, but he thought we could, put one out there and it immediately took off and stuck.

Yellow square with black capital letters JS

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Jan Lehnardt @janl.bsky.narrativ.es · 25/07/2025

…and we all put this logo with a link back to MDN on all the websites we had access to. And it worked, yer welcome :) status.kinlan.me/@paul/114912...

Red/black on beige banner with a cartoon lizard and the slogan: Better JS Docs, For us, By Us! Promote JS!

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Jan Lehnardt @janl.bsky.narrativ.es · 16/06/2025

Here indieweb.social/@alineblanke... suggests a rather straightforward three step programme to counter these worrying developments. 1. Break up large cooperations 2. Regulate and tax the remainder 3. Build tech infrastructure as public goods #bbuzz25

Woman in pink shirt on stage next to a large slide, white text on blue:
1. Break up
2. Regulate + tax
3. Public-led
infrastructure

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Jan Lehnardt @janl.bsky.narrativ.es · 16/06/2025

Strong opening of #BerlinBuzzWords by Paul Berschick: In these times it is more important than ever to foster communities and form relationships. 🫶

White man in suit on a conference stage, photo of a computer screen

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Jan Lehnardt @janl.bsky.narrativ.es · 31/05/2025

I saw funny & charming Jeff Arcuri live last night. My favourite moment was when he asked if we had any popular hoaxes like Bigfoot in Germany and then observing the poor American man grappling with understanding the mundane hilarity of the German psyche while trying to pronounce Bielefeld.

Comedian in jeans and jean jacket on blue lit stage.

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Jan Lehnardt @janl.bsky.narrativ.es · 23/05/2025

something something kubernetes at home

Big ass cargo ship with loads of containers stuck nose first a few meters away from a hut at a Norwegian fjord.

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Jan Lehnardt @janl.bsky.narrativ.es · 24/04/2025

Friends don’t let friend build their own {CRYPTO, SYNC, DATABASE}. To which @jcoglan@mastodon.social quipped: “So when are you going to build your own crypto?”. Touché! — In this series, we teach you how to build your own sync engine! 1. How to Sync Anything: neighbourhood.ie/blog/2025/04...

Jan Lehnardt Friends don't let friends build their own {CRYPTO, SYNC, DATABASE}.

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Jan Lehnardt @janl.bsky.narrativ.es · 16/04/2025

How to Sync Anything: Building a Sync Engine from Scratch, Part 2: neighbourhood.ie/blog/2025/04... After covering identity in part 1, we’re are now learning how to effectively and efficiently calculate the delta of data that needs to be synced, including how to handle deletes.

Client/server state diagram that shows how to reliably sync data. Full text description in the linked post.

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Jan Lehnardt @janl.bsky.narrativ.es · 05/03/2025

So happy to finally publish our in-depth technical case study about we helped a client prepare for their AAA sports game launch to get 10x req/s out of their @couchdb.bsky.social cluster while 1/10xing the request latency. neighbourhood.ie/blog/2025/03...

A line graph that shows a 63000 peak request per second rate

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Jan Lehnardt @janl.bsky.narrativ.es · 27/02/2025

We were not (😮‍💨), but to make sure we had to go back to the very foundations any database is built on: basic syscalls, a filesystem, process crashes and (lying) storage devices. Come with me on a journey of rediscovering what it means to safely store data: neighbourhood.ie/blog/2025/02...

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Jan Lehnardt @janl.bsky.narrativ.es · 17/12/2024

Deutsche Blood Sugar Sex Magik:

Liste von bei Ausgrabungen in Berlin gefundenen Dingen: Schuh Schwert Latrine Würfel.

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Jan Lehnardt @janl.bsky.narrativ.es · 05/12/2024

I spent yesterday afternoon attending a German parliament hearing about Open Source. 20y ago me would have never believed this. www.bundestag.de/dokumente/te... Official summary (in German) here: www.bundestag.de/dokumente/te... #OpenSource

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Jan Lehnardt @janl.bsky.narrativ.es · 08/11/2024

Today, Nov 8 (among other things) marks the 15 year anniversary of the very first JSConf EU in Berlin. I might write up a proper retrospective some day, but today, I’m sharing a few impressions that I shot on my then brand new iPhone 0. Do excuse the picture quality. narrativ.es/@janl/113448...

Starting at the end, this is traditional family photo that we shot at the end of all conferences. 120 people in a raw industrial space in Berlin Kreuzberg. With Chris & Laura Williams, initiators of JSConf US on video.

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Jan Lehnardt @janl.bsky.narrativ.es · 07/11/2024

Heya, I’m at #btconf today, find me for hugs & stickers. I brought a @molly.wiki collection plus some surprise #JSConfEU & @couchdb.bsky.social items. 1/2

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Jan Lehnardt @janl.bsky.narrativ.es · 24/12/2023

It does. This is with Ivory for mastodon. Doesn’t seem to with with the BS app here.

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