6 ms·
I don't know how they are accounting for the various different data centers within a region (IE. Availability zones). It could explain self latency if a packet
by roomey 5y ago
I don't know how they are accounting for the various different data centers within a region (IE. Availability zones). It could explain self latency if a packet is leaving a DC
- dtech 5y agoanecdotally the connections between AZs are so low latency you often can't tell whether a server is in the same or a different AZ
- jzoch 5y agoDefinitely not true. Cross AZ is incredibly high compared to within the same AZ. We run a bespoke multi-master database setup that must be colocated to the same AZ due to unacceptable latencies when run spread across 3 AZ's. A few ms difference
- dastbe 5y ago(i work at aws) yes, while in my opinion most services won't care about the distinction between cross-az/same-az (you're definitely not most services :) ), you can definitely tell the difference between * in the same region vs not * in the same az vs not * in the same placement group or not which shouldn't be surprising. you should get a latency benefit from increased physical proximity!
- weird-eye-issue 5y agoSome AZs have multiple DCs btw
- tuananh 5y agoAZ usually have 2-5 DC if i recall correctly
- virtuallynathan 5y agoMost regions AZs are only a single DC, a few have more than one per AZ.
- tuananh 5y agoi might have remember it wrong. does multiple buildings at single site count as multiple DC? or it must be multiple physically separate locations?
- virtuallynathan 5y agoIn My use of DC I’m referring to a single physical building.
- tuananh 5y agoIs there a list of no. Of DC per AZ? I couldnt find it anywhere
- virtuallynathan 5y agoNo, its only been mentioned at ReInvent publicly, or via the WikiLeaks AWS leak.
- outworlder 5y ago> various different data centers within a region (IE. Availability zones). A single availability zone is often (always?) composed of multiple datacenters which are spread relatively far apart from one another.