Re:Garnet – A new remote cache-store from Microsoft Research
by sumtechguy on Tuesday March 19, 2024 @08:34AM
(#39755050)
In my years of doing this sort of thing. I only had it really be DNS once. The issues I usually see blamed on DNS is when DNS is 'abused' to do things like load balancing and the TTL is very small. Then you need goofy things like 'sticky sessions' and what not to work around that.
Re:Garnet – A new remote cache-store from Microsoft Research
by byteknight on Tuesday March 19, 2024 @11:35AM
(#39756851)
Assuming you didnt manage connectivity of systems very long or very many. I find it difficult that not being true with you saying it happened "once".
1. Clients query a list of servers (IPs) and handle failover when you don't quickly get a reply.
2. Most of those servers at the root and TLD level are actually anycasted from multiple locations globally, so you connect to the closest instance.
3. Those instances are often clusters of physical servers. The big ones have fully redundant networking, so any router or switch failing doesn't take it down. Some run different DNS server software on each physical server, so even software bugs won't take down the whole system.