[ncsurfus]

Small note - AWS Network Load Balancers maintain the same IP addresses.

[vladvasiliu]

That's true, but functionality-wise, they can do much fewer things.

With an application load balancer, you can set up multiple backends, do basic redirections, do OIDC authentication, etc.

With a network load balancer, you can only spread TCP and / or UDP connections.

[harpratap]

Yeah I was confused too. Why on earth will someone provide a load balancer if it keeps changing it's IP address as it scales?

[saurik]

The normal AWS load balancers are set up to stay in service as long as the cache time on their IP address having been served by DNS... (which, FWIW, I have long argued "isn't sufficient", as many ISPs in countries half a world away from the US or using tech like satellites don't honor DNS cache times and then your requests end up getting routed to someone else... I routinely got tons of HTTP requests clearly destined for someone else's product).

[ris]

Because they're intended to be referenced via hostname, and yes, regular HTTP AWS load balancers do indeed rotate their IPs.