Re: [Add] ECS privacy concerns, alternatives?

["Mark Delany" <[e-mail]>]

On 16Apr19, Brian Dickson allegedly wrote:

> There are other ways to improve the whole ECS model by moving to GEO.

There are other reasons for using ECS besides GEO and that is
topological proximity and path costs.

While it is true that many are using GEO as a proxy for topology
because it's close enough for their application, e.g:

    if countryCode[ip] == "UK" then serve a London IP.
    if countryCode[ip] == "AU" then serve a Sydney IP.


there are others who use ECS as input into path and cost metrics as
part of calculating an answer.

They do this because latency means everything or costs mean everything
or both! Such calculations fail to work with geo-only data -
particularly if your deployment is more fine-grained than country-code
level.


Mark.