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.

Posts How to fetch all images from a WordPress draft using PHP?
How to fetch all images from a WordPress draft using PHP?
How do I get all images from WordPress? How do I get a list of all posts in WordPress? How do I fetch post data in WordPress? How do I show recent pos...
Tags Add Tag to post after publishing
Add Tag to post after publishing
You go and edit the post you have already posted. Then you add the tags you want you type them into the “tags” box manually, and then press ADD. Then ...
Encrypted How do you do a meta query on an encrypted field?
How do you do a meta query on an encrypted field?
Can we query encrypted field in Salesforce? How do I decrypt an encrypted field in Salesforce? Can we show the text encrypted fields in the search res...