Which data is written and stored in the database when read-only (non-posting, non-commenting) users visit the site?

With a default Wordpress install, with no plugin installed, does the read-only visiting of the website generates write operations in the database? By read-only, I mean: visitors come and don't post user-submitted contents (like comments, etc.)

If so, which data is written, and in which database table?

(When using for example Apache, logs age written directly in /var/log/apache2/*.log, and I guess Wordpress doesn't do a second layer of logging into the MySQL database, or does it?)

Topic logging database Wordpress sql

Category Web

1
answered at

For a logged out user on a stock install of WordPress? No.

For a logged in user? Yes, their user session meta will be updated, and WordPress may check for updates and store the result as options/transients.

However there is no "logging" to the database, and no logs table.

WordPress also won't log to a file. If WP_DEBUG_LOG is defined it will redirect PHP errors and notice messages to wp-content/debug.log, but this must be turned on in the wp-config.php file.

As or themes and plugins? You would need to contact the authors/developers.

If you are looking for activity logs, audit trails, visitor statistics, access logs, WordPress does not have these. You would need to install a plugin that provides them.

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answered at

I think WP out-of-the-box does not write or store any data for non-logged in users.

WP - again by default - does not write log files, that is an optional config defined in the wp-config.php file.

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