Hello,<div>I'm using the limit_req directive to control the rate at which my backends are hit with requests. Typically a backend will generate a page and the client will not request anything for a short while, so a rate of 1 per second works well. Sometimes however a backend will return a HTTP redirect, and then the client must wait for a one second delay on the request to the redirected page. I'd like to avoid this if possible to avoid the slow feeling when users click on redirected links.</div>
<div><br></div><div>The nodelay option looked like it would work at first glance, but this bypasses the delay completely for all requests up to the burst, so it's still possible for the backend to be hit with many requests at once. Ideally I would like to have a "nodelay burst" option to control how many of the burst requests are processed without delay which I could set to 2 in my situation, while still delaying any further requests beyond that.</div>
<div><br></div><div>Another idea I had was to have the backend send a special header similar to how X-Accel-Redirect works, eg X-Limit-Req: 0 to avoid counting a single request towards the rate limit for purposes of redirects and similar situations.</div>
<div><br></div><div>Any other thoughts how something like this could work?</div>