Blog

The OCaml Planet RSS

Articles and videos contributed by both experts, companies and passionate developers from the OCaml community. From in-depth technical articles, project highlights, community news, or insights into Open Source projects, the OCaml Planet RSS feed aggregator has something for everyone.

Type

All Article Video

Want your Blog Posts or Videos to Show Here?

To contribute a blog post, or add your RSS feed, check out the Contributing Guide on GitHub.

Add your RSS feed!

Filtering by: Keyword: parquet Clear all

Building a STAC server to avoid scanning 3.8 million tiles

The GeoTessera project produces 128-channel geospatial embeddings from Sentinel satellite imagery. The dataset is tiled at 0.1-degree resolution across the globe, covering 9 years and comprising roughly 3.8 million tiles, each containing embeddings and scale-factor files.

gadt grid_0 okavango parquet s5cmd scaleway scanning stac tile tiles

17 Apr 2026

Marc Elvers

Read Article

Tile Server

My throw-away comment at the end of my earlier post shows my scepticism that the JSON file approach was really viable.

bounding laurentmazare mtelvers ocaml-arrow parquet stac throw-away tile tiles title-server

02 Dec 2025

Marc Elvers

Read Article

Apache Parquet Files

If you haven’t discovered the Apache Parquet file format, allow me to introduce it along with ClickHouse.

apache clickhouse commit curl echo json no_solution ocaml-base-compiler parquet sha

17 Sep 2025

Marc Elvers

Read Article

Optimising Data Access in Parquet Files

Yesterday I wrote about the amazing performance of Apache Parquet files; today I reflect on how that translates into an actual application reading Parquet files using the OCaml wrapper of Apache’s C++ library.

anyif arrow clickhouse column columns filename parquet parquet_reader seconds table

17 Sep 2025

Marc Elvers

Read Article

The OCaml Planet RSS

Type

Source

Keyword

Year

Author

Want your Blog Posts or Videos to Show Here?