HN user
There are several reasons why Internet latency is inflated over direct-route speed-of-light latency. Some reasons may change others may not.
1) speed of light in fibre is 2/3c - unlikely to change soon 2) fibre is laid in the ground on a circuitous route - rarely changes but does happen 3) queueing delay - that's often the main culprit, changeable, but hard (see the buffer bloat debate)
The way I understand this proposal, the idea is to find at which request rate the latency of a storage configuration (eg, 2x Optane) explodes. If your request rate is above that rate, get more RAM. I'm not sure I understand how to figure out how much more RAM? Until the latency goes down I guess?
Also what about diurnal patterns? Can there be a way to dynamically react and save power..
Interesting reference to the morning paper. But don't get how that fits into the story?
https://blog.acolyer.org/2018/10/26/robinhood-tail-latency-a...
Thanks for clarifying!
Can't you do that with DNS records where there are multiple IPs on a A record?
Basically, we're already doing this for fault tolerance and load balancing within a single CDN. Except that currently we randomize the IPs. To enforce priorities, you'd want the IPs in the A record at least partially ordered by provider.
Another pointer to a paper that seems related: https://www.usenix.org/conference/nsdi18/presentation/beckma...
This is a very hot topic recently. It seems to me that several communities (databases, CDNs, storage, CPU architecture, theory) do a lot of redundant work and don't communicate a lot with each other..
Partial discussion: https://news.ycombinator.com/item?id=18307077
Partial discussion: https://news.ycombinator.com/item?id=18307077
How widely has this been tested? Is this being used in production?
Is there a service where you can pull constantly updated info about time zones etc? Like a library?
Thx for the clarification. Had the same misconception
Sounds like a marketing blurb but from just a few days ago:
"Azure is breaking the speed barrier in cloud connectivity. ExpressRoute Direct provides 100G connectivity for customers with extreme bandwidth needs. This is 10x faster than other clouds."
https://azure.microsoft.com/en-us/blog/azure-networking-fall...
Can sb confirm that? Have a useful case in mind.