I have several custom post types in my site and I added the
flush_rewrite_rules() inside the last register post type function in my
function.php theme file.
This works and stops 404 pages, but after a while the rewrite_rules in wp_options started to act up and it periodically appear in my mysql_slow_queries log file.
I've tried to search about this but find varying answers, lots of which I don't know how to apply. I haven't been able to understand the explanation in register post type codex on how to use it on
Can anyone please give me some help on how to correctly call flush_rewrite_rules()?