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.

Category Remove /category/ from category (archive) page URLs (without using a plugin)
Remove /category/ from category (archive) page URLs (without using a plugin)
How do I remove category names from URL? How do I remove category categories from WordPress URL? How do I remove a product category base? How do I rem...
Wordpress wp-admin edit user url wont show up correct url
wp-admin edit user url wont show up correct url
How do I access WP-admin after changing URL? How do I change the URL and URL of my WordPress site? Why are changes not showing up on my WordPress site...
Meta Change the meta keywords for a specific page
Change the meta keywords for a specific page
How do I choose meta keywords? How do I separate keywords in meta tags? Should meta description be different on each page? How do I change the meta de...