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← Field notes

2026-09-29

WebSocket Fanout Runbook for a Micron Night

Not financial advice. Verify claims independently.

Ops runbook style notes for quote fanout when MU prints Wed Sep 30 AMC — what we rehearse with clients.

Runbook highlights:

  1. Pre-scale hot symbol rooms.
  2. Enable coalescing for last-trade.
  3. Page on reconnect storm rate, not only CPU.
  4. Freeze noncritical websockets (presence, cosmetics).
  5. Postmortem within 24h with p95 charts.

We rehearse with recorded bursts. Heroics during the print are a process failure.

Our flagship case study is Stock Picks — paper trading loops, quote fanout, and fixed-scope sprints.

Not financial advice.

From the desk

Want this built into your product?

Open a work order — or try Stock Picks, the paper-trading app we shipped as our flagship case study.