No, I guess every dns provider manages it but it needs to be also implemented at the browser level : if the resolved address doesn't answer on port 443 then try the next address. I use this only for internal service for which I don't want to pay for load balancer
I see what you mean. However the availability checking should be done by the load balancer, not the client side.
The client simply asks a DNS server to resolve a domain to an IP so it can access it; the DNS server then answers the client with an IP of a server that's optimal for the client (based on location, server load etc). But normally there are layers of load balancing going on and you combine these two types of methods, so the DNS server in that case returns the IP of a load balancer server, and the load balancer server relays/forwards the user requests to the actual, hidden end servers.
I was answering to your second solution where the dns resolves to multiple ip. A ha loadbalancer is a must have if you need to send load to multiple servers.
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No, I guess every dns provider manages it but it needs to be also implemented at the browser level : if the resolved address doesn't answer on port 443 then try the next address. I use this only for internal service for which I don't want to pay for load balancer
I see what you mean. However the availability checking should be done by the load balancer, not the client side.
The client simply asks a DNS server to resolve a domain to an IP so it can access it; the DNS server then answers the client with an IP of a server that's optimal for the client (based on location, server load etc). But normally there are layers of load balancing going on and you combine these two types of methods, so the DNS server in that case returns the IP of a load balancer server, and the load balancer server relays/forwards the user requests to the actual, hidden end servers.
I was answering to your second solution where the dns resolves to multiple ip. A ha loadbalancer is a must have if you need to send load to multiple servers.