WordPress.org

Ari Stathopoulos

Adam Zieliński

zaerl

Jan Jakeš

Bero

Brandon Payton

<p>The SQLite plugin is a community, feature plugin. The intent is to allow testing an SQLite integration with WordPress and gather feedback, with the goal of eventually landing it in WordPress core.</p>
<p>This feature plugin includes code from the PHPMyAdmin project (specifically parts of the PHPMyAdmin/sql-parser library), licensed under the GPL v2 or later. More info on the PHPMyAdmin/sql-parser library can be found on <a href="https://github.com/phpmyadmin/sql-parser" rel="nofollow ugc">GitHub</a>.</p>


SQLite Database Integration



Installed version 2.0



Activated



Message: "All checks completed successfully, your site can use an SQLite database. You can proceed with the installation."



Screen with text and button. Ok, I can go back by just deactivating this plugin! Great!



Clicked button "Install SQLite database"



"PDO Driver for SQLite is missing" alone on an blank page, wheverer I go



Stuck. My somewhat "well crafted" and sophisticated testing site gone away, it seemed. 




Why could this plugin not check the availability of this driver before presenting a clickable button, or even proceeding?



Since I'm knowledgable enough to delete the ´wp-content/db.php´ file I was soon back to start, so I don't need help.



Others, if less knowledable in WP, should be warned and stay away until proper tests can be made before proceeding. On screen instructions on how to manually disable it in an emergency should also be given.


Possibly worst UX trap I have ever seen


I used it to spin up a test site in CI, it's just elegant and brings WP closer to Static when we need it. There's a place for SQLite simplicity in some WP workflows. Loved it!


Excellent!


Thank you dev team for providing this plugin !


Great Plugin! Makes WP so fast!


Ok, so in terms of doing what it says in the tin, for me it looks great. I've set up 20 - 30 instances, it runs my core plugins and has a footprint of ~ 105M when running with a default setup. Seems to be at least as fast as the MySQL instances sat next to them.



Here's the problem tho'. It would seem I can't actually convert any existing sites over to run on these instances without a lot of manual work. (I say this after reading the experiences of some others who claim to have tried).



Are there any relatively automatic tools and/or documentation that I might have missed when it comes to migrating a MySQL instance over to SqLite (and back, in the event of a problem), or at least a Roadmap of if / when such tools or plugins might become available?



A roadmap or estimation might at least (if it's a long way away) prompt someone to get on and do it?


Great, seems only one step away ...

SQLite integration plugin by the WordPress Team.

Moris Papasmadov

<p>Admin dashboard widget measuring and monitoring MySQL / MariaDB <a href="https://mariadb.com/resources/blog/flexible-mariadb-server-query-cache" title="MariaDB Query Cache" rel="nofollow ugc">query cache</a> performance & statistics – to optimize sizing configuration and highlight bottlenecks.</p>
<h4>Why</h4>
<p>Database Query for <a href="https://kinsta.com/knowledgebase/wp-options-autoloaded-data/#what-is-the-wp_options-table" title="What is the wp_options table" rel="nofollow ugc">Options Autoload</a> is repeatedly executed for each WP page load and its poor performance has been identified as a good indicator for a poorly performing database resulting in slow site.</p>
<h4>How</h4>
<ul>
<li>Use dashboard widget to measure and monitor <code>Options Autoload Query Time</code></li>
<li>Use dashboard widget to measure and monitor <code>Options Autoload Query Size</code><br />
This query result size increases constantly over time, as WP site usage grows – but its oversized sudden growth or constant balooning must not be overlooked.</li>
</ul>
<p>Heavy plugins might rely heavily on adding data to <code>Options Autoload Query Size</code>.<br />
Poorly written plugins causing WP performance degradation have been found to constantly increase this query result size.</p>
<h4>Time Metrics</h4>
<p>‘Options Autoload Query Time’ is measured in milliseconds (ms)</p>
<p>0 ms – great performance below one millisecond<br />
 1-2 ms – good performance<br />
 3-5 ms – OK performance<br />
 50+ ms – poor performance should be investigated</p>
<h4>Size Metrics</h4>
<p>‘Options Autoload Size’ is measured in Bytes<br />
If you have the control to enable the database server wide query cache – configure query_cache_limit to be larger than <code>Options Autoload Size</code></p>
<p>20,000 Bytes – freshly installed clean wordpress site<br />
 30,000 Bytes – small wordpress site<br />
 50,000 Bytes – medium wordpress site<br />
 250,000 Bytes – large wordpress site<br />
 2,000,000+ Bytes – too large should be investigated<br />
( <code>all above are rough metrics</code> )</p>


MySQL query cache stats

Admin dashboard widget measuring MySQL database performance & query cache

SQLite Database Integration vs MySQL query cache stats