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Streaming millions of TESSERA tiles over HTTP with Zarr v3

How we restructured TESSERA's geospatial embeddings from millions of individual numpy files into sharded Zarr v3 stores for efficient HTTP streaming, enabling everything from single-pixel mobile lookups to regional-scale analysis with just a couple of range requests.

14 Mar 2026

Anil Madhavapeddy's Blog

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What Happened in 2024?

We are done with 2024, and now is a good time to reflect on what has happened over the past 12 months. I was not planning to, but my feed convinced me to give it a try. Plus, it is a good opportunity to revive my “Retrospective” series.

01 Jan 2025

Thomas Letan’s Blog

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What happened in October and November 2022?

Spatial Sway has basically reached the MVP stage, I failed to fully commit to this year’s NaNoWriMo, and someone has worked on adding some support for coqffi to dune.

19 Nov 2022

Thomas Letan’s Blog

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What happened in September 2022?

In a nutshell, my latest hobby project (Spatial Sway) works well enough so that I can use it daily, and I have done some unsuccessful experiments for this website.

18 Sep 2022

Thomas Letan’s Blog

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