We will ship the first Polars 2.0 release candidate next week

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We will ship the first Polars 2.0 release candidate next week

Polars 2.0 will ship its first release candidate next week, introducing a default streaming engine for improved performance out-of-the-box.

What: Ritchie Vink announced that the upcoming Polars 2.0 release will move the library to a default-streaming execution model, increasing speed for common tasks without requiring user code changes.

Why it matters: Shifting to streaming by default reduces memory pressure for datasets exceeding RAM, making high-performance data manipulation more accessible to casual users.

Takeaway: Test your existing workflows against the release candidate once it ships next week to check for performance regressions.

Deep dive

Move to default streaming engine
Aimed at reducing memory usage for larger-than-RAM data operations
Focus on maintaining backward compatibility while improving core engine defaults

Original article

We will ship the first Polars 2.0 release candidate next week. Polars 2.0 will be great for casual Polars users as it will default to the streaming engine, meaning your code will be faster without doing anything.

So the first release candidate next week. Give it a spin!

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