Contao 4.9.31, a new version of the Contao open source CMS, has been released.

This release mainly contains significant performance improvements. In particular, kernel.terminate events are no longer executed for fresh cache entries. Previously, these events caused e.g. the search index to always be updated, even though the entry came from the cache. Consequently, a database connection was also established for a cache hit. In addition, the search indexer was adjusted so that it now correctly considers "noindex". Furthermore, the number of database queries was significantly reduced to further minimize the load on the server. Apart from the performance improvements, a nice error message is now displayed if restoring a version fails and the order of video formats has been changed so that webm is now loaded before mp4 to choose the more efficient format if the browser supports it.

Changelog of the fixed issues in Contao 4.9.31:

About Contao 4.9 LTS

The first stable version of Contao 4.9 has been released on February 18, 2020, replacing Contao 4.4 as the long term support version. As an LTS version, 4.9 has been be provided with bug fixes until February 14, 2023 and security-related updates until February 14, 2024. Contao 4.13 was the next LTS version of Contao and has been released in February 2022, ensuring a stress-free transition.

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