Re: [Sidrops] Publication Point -> RP synchronization in bandwidth constrained environments (note for RRDP v2)

[Job Snijders <[e-mail]>]

On Tue, May 30, 2023 at 03:21:19PM -0400, Christopher Morrow wrote:
> On Tue, May 30, 2023 at 11:39 AM Job Snijders
> <job=[e-mail]> wrote:
> > I wanted to share a note that if work ever starts on RRDP v2, that
> > design team should consider conservation of bandwidth a priority.
> >
> > Recently one of the RIRs ran into a network congestion issue
> > noticable on intercontinental transfers: their 36 megabyte RRDP
> > snapshot was being served at a rate of ~ 25 kilobytes per second,
> > and worse the TCP connections often timed out.
> 
> wait, I thought the reason (one of the reasons) that rrdp was great
> was it was cacheable and all of this would be behind CDNs?

I take your comment as a humoristic reflection :-)

Be that as it may be (I wasn't part of the RRDP design team),
introducing an extra layer of caching introduces an extra layer of
complexity.

For example special care needs to be taken to avoid the CDN
inadvertently caching 404s for URLs for future RRDP deltas. If you use a
CDN, you should use non-predictable filenames for the deltas. Also, CDNs
oftentimes cost money, and even can congest. CDNs simply might not be
for everyone.

Kind regards,

Job