PinnedJulien Le Dem@J_Oct 18, 2024If you follow me on here, you should follow me on there: bsky.appJulien Le Dem (@julien.ledem.net)Principal Engineer, Founder, Angel, Advisor, OSS. LFAI&data: OpenLineage, Marquez, ASF: Parquet, Arrow, Iceberg, 🐖 he/him. Me: https://julien.ledem.net/ Blog: https://sympathetic.ink1122K
Julien Le Dem@J_Apr 11Thank you for letting me keynote day 2 of the Iceberg summit. I hope you all enjoyed it! bsky.app/profile/julien…21284
Julien Le Dem@J_Dec 11, 2025In the past few years, we’ve seen a cambrian explosion of new columnar formats, challenging the hegemony of Parquet. Presumably, the design of yore is not going to cut it moving forward. I spent some time to understand how things actually changed. sympathetic.inkColumn Storage for the AI EraIn the past few years, we’ve seen a Cambrian explosion of new columnar formats, challenging the hegemony of Parquet: Lance, Fastlanes, Nimble, Vortex, AnyBlox, F3 (File Format for the Future). The...317916.6K
Julien Le Dem@J_Dec 9, 2025If you missed my talk "The advent of the open data lake" at AI By the Bay, the recording is now available. ai.bythebay.io/talks/the-adve… youtube.com/watch?v=xHGVCV…The advent of the open data lake | AI By the BayFrom ai.bythebay.io3548
Julien Le Dem@J_Nov 14, 2025If you missed me giving it live, the slides of my talk, "Column Storage for the AI era" are available here: docs.google.comColumn Storage for the AI era(illustration hand generated in 1958) “Column Storage for the AI era” © 2025 by Julien Le Dem is licensed under CC BY-NC-SA 4.0. To view a copy of this license, visit https://creativecommons.org/li...11511710K
