[atlas] Upcoming RIPE Atlas stream release in December

Dear colleagues,

In around three weeks we will be releasing a new version of the RIPE 
Atlas stream (https://atlas-stream.ripe.net) with an API based on 
WebSockets and plain HTTP requests.

The current Socket.IO interface will be maintained for backwards 
compatibility for the near future, but some subscription parameters will 
be dropped due to extremely low or no usage. These are:

* Historic playback (startTime, endTime) — note that this does not 
include sendBacklog, which will still work as now
* Arbitrary server-side filtering of fields (equalsTo, greaterThan, 
lessThan) — note that filtering by "prb", "msm", "type" etc will work as now

We can see from the service logs that each of these parameters has 
either not been used at all or used by a single IP address in the past 
month, so the impact should be minimal. However, if you happen to be 
using one of these parameters then please get in touch with me.

Aside from these changes, existing use cases should continue to work as 
they do now, and we will be monitoring closely for any issues.

There will be more information on the new API, including complete 
documentation, closer to the time.

Kind regards,
Chris Amin
RIPE NCC