Could

Can I split a huge wp_postmeta table across different databases or servers?

Can I split a huge wp_postmeta table across different databases or servers?

No. This is not practically possible primarily because there is no single interface to this table where you could implement the functionality you need, and even if you could, it would introduce some extremely gnarly problems.

Blank Blog Screen [closed]
Why is my WordPress blog page blank? How do I fix my blank page on WordPress? Why is my website showing a blank page? What is WordPress white screen o...
How to upload an image to a custom post type
How do I add multiple images to a custom post type? How do I upload a custom image in WordPress? How do I create a custom post type Gallery? How do I ...
How do I export a single site in a multisite content without using a plugin? The default WP export does not catch all
How do I export a single WordPress site from multisite? How do I move a single website to multisite? How do I transfer content from one WordPress site...