My question : how many custom fields or even taxonomies WordPress can handle without affecting performance?
The reason I ask, is because I started building a custom theme and I might need to have around 10 to 20 custom fields, and thinking if this will affect the speed of the site.
I understand that speed also depends on server/hosting and number of visits, cache techniques, etc...
I also expect that a post with one custom field will be faster then one post with ten custom fields.
But, let's say a site that haves around 10,000 visits a day with a post with one custom field will the speed difference be much more different from a site with the same 10 000 visits a day with a post with 10 custom fields.
Just trying to figure it out how much of a difference a custom field can make.
Also in terms of custom searching using wp_query and custom fields parameters will the speed be affected.