Pierre Zemb

✍️ I just published "Best resources to learn about data and distributed systems" Happy learning 😊 #data #distributedsystem pierrezemb.fr/posts/distsys-…

Want to know how Aurora DSQL commits transactions?

"Et si on faisait du simulation-driven development ?" avec Pierre Zemb Découvrez comment le Deterministic Simulation Testing permet de simuler, rejouer et diagnostiquer les bugs les plus complexes des systèmes distribués. #SunnyTech2026 #SimulationDrivenDevelopment

@sunbains Thought you might be interested in this

@almoggavra @eatonphil And so's the video of Will's talk on Swarm Testing! youtu.be/wzfC7Q-xNik

Our TESS telescope has released its most complete view of the starry sky yet! All those dots? They're confirmed and candidate planets! Since launching in April 2018, TESS has been scanning wide swaths of the sky to build up this mosaic. go.nasa.gov/49MK9hU

This is such a great example of theory vs practice. In theory, UUIDv4 collisions don't happen (generating one million per second, probability of seeing one collision in a year is ~10^-8). But they have been observed to happen in practice, especially in distributed systems. Why?

I say this all the time. Databases aren’t sold on golf courses anymore. How you post your measurements and benchmarks matter. These days a lot more choices are made by engineering teams not executives on the back nine after 6 beers. The audience is nerds who care.

We are back. After one year of quiet building. Introducing GENE-26.5, our first robotic brain that takes a major step toward human-level capability. For years, robotics has struggled to learn from the world’s largest and valuable data source: Humans. Solving it means rethinking the whole stack from the ground up: - A robotics-native foundation model. - A 1:1 human-like robotic hand. - A noninvasive data collection glove for motion, force, and touch. - A simulator that turns weeks of experiments into minutes. GENE-26.5 is trained across language, vision, proprioception, tactile, and action. We designed a set of tasks to test how far we can go with this new paradigm. Fully autonomous, 1x speed, one model, same weights. (Enjoy with sound on) We are approaching the endgame for robotics. And this is just a beginning.

It is too common an idea among European devs I've spoken to that there are not interesting deep tech startups in Europe. There are! I'm only beginning to track funding announcements and I see so many cool ones over there.

Stuff like this drives me crazy. Not only infra software should be consistent and correct. UIs should too! It's maybe not catastrophic in the same way as `SUM` miscounting in SQL, but it is a repeated paper cut for millions of users.

I gave a lightning talk at #BugBash 2026, sharing the stage with people whose work shaped how I think about distributed systems. Still processing that. Wrote up why the correctness decade has started, and why you trust the simulator, not Claude 👀 pierrezemb.fr/posts/bugbash-…

UPDATE: pgBackRest is likely to receive enough funding be be revived. See github.com/pgbackrest/pgb… for details.

Talking at #BugBash was already an achievement for me, but appearing in @muratdemirbas's blog? Wild.

🚀 Apache Iggy 0.8.0 is out! Wire protocol rewrite, persistent WAL journal, new shard architecture, stronger security, SDK & connectors progress. Clustering keeps accelerating. iggy.apache.org/blogs/2026/04/… #iggy #rust #io_uring #vsr #apache #asf #streaming

The Consensus Weekly went out yesterday which features internships, interesting jobs in software engineering, and funding news in software infrastructure. Here are all new tracked internships at Replit, Atomic Semi, SiFive, etc. No subscription needed, go do interesting things!

I don't need more software. Would appreciate the software I already have to work better, though.

@kellabyte Don’t be sorry, your work around HoloStore is impressive, and I feel the pain of not having enough hours in the day. Have fun and take care!

I'm so sorry about all the HoloStore tweets lately. I've been struggling w/ burnouts & all the things I wanna fix, try, build have lived rent free in my head. I just don't have enough hrs in the day. I'm excited for the first time in years cuz I've become less of a bottleneck

@kellabyte Really nice work! Sharding is the reason we wrote an etcd-shim on top of #foundationdb

Just fixed throughput/p99 jitter caused from dynamic partition splitting seen in this graph Even tho HoloStore dynamically splits ranges ala CockroachDB and etcd has one global keyspace HoloStore still has less jitter. Real early days tho, Holo is a toy, etcd is mature sw.

@owickstrom @jess_antithesis Wow awesome! Will give it a try

New blog post: "The Bombadil Terminal Experiment" wickstrom.tech/2026-04-30-bom…