It should not. We reload our configuration in production every 30 seconds–we don’t lose connections from what we’ve seen and we handle 5k requests per second. This is running HAProxy 1.6, so it doesn’t even have the latest and greatest in seamless reloading. You can find more information about seamless reloads here. Look at section “8”, which shows the reload command in 1.7 (which also works in 1.8). Make sure you look at the section where there are NO connections lost, because it does show “before and after” results.
There is a good chance that you won’t lose connections at lower RPS rates, but if you want to be extra sure, make sure you use the
Hopefully that helps! Let us know how that goes!