I'm working to develop a plugin that will be adding attaching quite a bit of information to each post. This could end up being anywhere from 15-25 items about each post.
I'm debating whether it's a better idea to add this data directly to the post meta table, or whether I should be creating a new table for the purposes of my plugin.
If I were doing this for a small site, I wouldn't waste much time on this debate. However, this is a plugin intended mainly for larger sites with upwards of 100,000 posts each.
At the very least, I'm hoping someone could explain the theoretical complications with creating millions of rows. Would it really bother sql too much? Would the indexes in place realistically nullify the problem?
Thanks,
wjh.