Episode 3 of 9 · Slack
The thundering herd: when everyone reconnects at once
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The thundering herd: when everyone reconnects at once. Opening Slack used to cost one enormous HTTP call. Before you could read a single message, the client asked for the entire workspace: every user, every channel, every membership. S
Based on the board The Thundering Herd.
Related papers: ZooKeeper: Wait-free coordination for Internet-scale systems, The Tail at Scale and Scaling Memcache at Facebook.
Covered in Slack - the case study.
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