Understanding the New Categorical
by Thijs Nieuwdorp
Exploring the evolution of the Categorical data type in Polars.
Thu, 29 Jan 2026How Rabobank leverages window functions to drastically improve performance
by Freerk Venhuizen, Senior Data Scientist @ Rabobank
Window functions are a perfect fit for detecting periodic payment bookings at Rabobank. They not only improve performance but also makes code easier to read.
Wed, 10 Dec 2025Polars in Aggregate: Polars Cloud, Streaming engine, and New Data Types
by Thijs Nieuwdorp
This edition covers the launch of Polars Cloud, the new streaming engine, the Categoricals overhaul, the stabilization of Decimals, introduction of Int128, and the introduction of runtimes.
Wed, 3 Dec 2025Supercharging Analytics with Polars: A Case Study in Analyst Empowerment
by Tyler Riccio, Assistant Vice President Enterprise Data and Analytics @ Citizens
With Polars, Citizens achieved faster development cycles, richer and more timely insights, and created a strong pillar for the ongoing modernization journey.
Wed, 26 Nov 2025Polars helps coping with black swan events at La Mobilière
by Dr. Michael Tomka - Actuary @ La Mobilière and Dr. Santiago Padrón - Senior Data and Machine Learning Consultant @ D ONE
La Mobilière always keeps its promise. Now, even more promptly, thanks to Polars.
Thu, 9 Oct 2025Polars raises €18M Series A to build fast, ergonomic data processing at any scale
by Ritchie Vink
We have raised €18M in Series A funding the build the next generation data.
Mon, 29 Sept 2025