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I try to use Elasticsearch, But it doesn't work stability(Elasticsearch die a lot time). How can I use MySQL on Magento 2.4.2?

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As of Magento 2.4.0, all search functionalities are now using Elasticsearch as search engine:

Elasticsearch 7.6.x support. Elasticsearch 7.6.x is now the default catalog search engine for Magento Commerce and Open Source. You cannot install or upgrade to Magento 2.4.0 without also installing Elasticsearch 7.6.x.

Removal of the MySQL catalog search engine. The MySQL search engine has been removed from Magento 2.4.0 and replaced as the default search engine with Elasticsearch. Elasticsearch provides superior search capabilities as well as catalog performance optimizations. All merchants must have Elasticsearch to install and deploy Magento 2.4.0.

(Reference https://devdocs.magento.com/guides/v2.4/release-notes/release-notes-2-4-0-open-source.html#platform-upgrades)

With Magento OOTB latest versions, there is no way to go back into using MySQL as search engine. So your solution will be to seek for a 3rd party module or create your own customizations which is going to be a difficult task to cover all new updates and upgrades from now on also.

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    It's help. Thank you! Mar 20, 2021 at 4:40
  • You're most welcome!
    – Diana
    Mar 20, 2021 at 9:11

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