Django 4.0 Ships With a Built-in Redis Cache Backend

Django 4.0 lands in December 2021

The Django team announced the release of Django 4.0 on December 7, 2021. As the project's release notes put it, the version covered 'an abundance of new features,' and it also shifted the framework's support timeline, with Django 3.2 reaching the end of mainstream support the same day.

A native Redis cache

The headline for many teams was the new RedisCache backend, which provides built-in support for caching with Redis without a third-party package. It joined Django's existing cache framework as a first-class option for one of the most common production caching setups.

Template-rendered forms and zoneinfo

To ease customization, Forms, Formsets and ErrorList are now rendered using the template engine, making it far simpler to override their markup. Django 4.0 also adopted the Python standard library's zoneinfo as the default timezone implementation, replacing the long-standing dependency on pytz.

Support timeline

With 4.0 out, Django 3.2, an LTS release, entered its security-and-data-loss-fix phase through April 2024, and Django 3.1 reached the end of extended support with a final 3.1.14 security release. The team encouraged all users to upgrade to stay on supported versions.

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See also: Django 4.2 LTS and psycopg 3, Python 3.11's major speedups.

Sources

• Django 4.0 released (djangoproject.com)

Published date reflects the original event date (2021-12-07). This article is original Skillo editorial written from the sources above; facts were verified in September 2026.