5 ms·

Could it be the obvious? Everyone signing on / loading slack clients at the same time?

• jordache 6y ago
  then wouldn't this happen every monday morning?
  • unethical_ban 6y ago
    Perhaps it is a large number of people checking into channels that are backlogged with lots of bot message notifications.
  • floatingatoll 6y ago
    A lot of organizations essentially took the last two weeks off from work, which is long enough for a 10-day autoscale window to spin down servers, and then get confronted by a load spike that wasn't pre-spun for.
    • derwiki 6y ago
      I would be shocked if Slack operations wasn’t aware of this return to work spike and didn’t pre-scale in anticipation.
      • floatingatoll 6y ago
        I wouldn't, since my personal theory is that the outage is due to AWS and GCP autoscale capacity exhaustion. We'll find out soon enough! EDIT: And down goes Notion, too: https://news.ycombinator.com/item?id=25634159 https://news.ycombinator.com/item?id=25634159
        • yreg 6y ago
          >AWS and GCP autoscale capacity What does this mean? What do cloud providers do when customers scale down their services? Do the providers literally power down servers? Do they sell the capacity to new customers?
          • delfinom 6y ago
            They rate limit how fast you can auto scale which is dependent on a slew of factors.
          • rocho 6y ago
            They sell unused capacity at a much lower price (spot instances on AWS, preemptible VMs on GCP). I don't know if they power down some servers if usage stays low for a very long time.
      • ABeeSea 6y ago
        That doesn’t mean they chose the right number to scale to. See for example, Amazon Prime day: https://www.cnbc.com/2018/07/19/amazon-internal-documents-what-caused-prime-day-crash-company-scramble.html https://www.cnbc.com/2018/07/19/amazon-internal-documents-wh...
  • spicybright 6y ago
    This is after many had a week vacation. I'm sure most weekends some people pop in and out, and logins are more staggered on a typical monday morning. Just a theory though.
• adwww 6y ago
  Nice of you to ignore the majority of the world's population who have been up and working long before America woke up.
  • kevindong 6y ago
    Slack makes ~61% of its revenue from US customers which only has 4 time zones compared to the remainder of their revenue being spread out across ~20 time zones. It's not an unreasonable hypothesis. See page 12 of the document (which is page 14 of the PDF) https://d18rn0p25nwr6d.cloudfront.net/CIK-0001764925/70df8344-5a32-48a8-a9b0-4a85711faf9b.pdf https://d18rn0p25nwr6d.cloudfront.net/CIK-0001764925/70df834...
    • blntechie 6y ago
      Slack most likely has more US customers but - Revenue is not same as users. Slack have tons of free users and some countries also has lower priced plans. - Many companies like Amazon etc. probably is counted as US revenue for Slack but they have more than 30% of their employees outside the US. This should not be huge numbers but significant.
  • buzzerbetrayed 6y ago
    Relax. GP is clearly referring to an increase in people signing on do to the holidays ending and everyone coming back from work. Also, Slack has significantly more users in the US than in any other country[1], and it really isn't even close. So the offense you're taking is unwarranted anyway. 1: https://saasscout.com/statistics/slack-stats/ https://saasscout.com/statistics/slack-stats/
• Raphmedia 6y ago
  My gut feeling is everyone coming out of the holidays reading back weeks of notifications.