The Boygenius fans have been out early, in today’s weather both foul and fair. #Fans #Devotees #Souvenir #WereInLove #TrueBlue #Queue #Queueing #LineUp #gigs #Boygenius #Dublin #RoyalHospitalKilmainham

As of a few hours ago, the last trickle of jobs were moved over to latency-based queues. We're slotting into one of:

* within_30_seconds
* within_5_minutes
* within_1_hour
* within_24_hours

We've hit a few snags - blowing those SLAs when slow jobs clog the works, starvation, unable to detect and auto-scale the lower latency queues fast enough, etc… Those problems were always there, bug didn't "see” and so didn't address/talk about them. Now we see them. And fix them.

#Sidekiq #Ruby #Queueing

Next was an interesting talk by Eva Tardos on learning in strategic #queueing systems. I don't think I've thought about queueing since undergrad, but it's always fascinating how small tweaks in approaches can yield massive gains in performance https://www.youtube.com/watch?v=l2bvbCyl2Tw (3/6)

So I am attempting to understand Queueing Theory that is more advanced than Little's Law and of course came across Defunctland's history of Disney's FastPass. I had a big guffaw when they showed an excerpt of a M/M/1 paper, scoffed at how you'd have to hire an engineering team "just to get to the bottom of this incredibly niche curiosity..." and then they do just that. So great.

https://www.youtube.com/watch?v=9yjZpBq1XBE

#queueingtheory #disney #queueing #fastpass

Head-of-line blocking - Wikipedia https://en.wikipedia.org/wiki/Head-of-line_blocking #networking #queueing