Here is how you can fetch simultaneously many urls, check if every
response is 200 OK and print title tags (or catch an exception if
something goes wrong) .
If you're not familiar with promises, here is a perfect documentation
You are asking too abstract question and trying to get too specific answer.
If you want an example that works for you, provide a details: what sites
do you want to parse, where they come from, why do you need to throttle
download queue, what exactly r u trying to limit (max connections at a
Actually, you're on the right way. But instead of calling render in
controller (you'll get many duplicates of the same code), you better
just leave only "die" there, and call render method from the hook.
Smthng like this:
# hook (you can also consider arount_action hook)
