← journal·2026-09-22
Websocket Fan-Out During the Micron Print
Not financial advice. Verify claims independently.
Wednesday at 4:30pm ET, Micron's print hits and every market-data feed in the world gets its quarterly stress test. The failure modes:
- Burst overflow — quote rates spike 10-20x in the first minute; unbuffered consumers drop ticks
- Reconnection storms — clients that timeout reconnect simultaneously, hammering the handshake path
- Backpressure collapse — a slow subscriber blocking the fan-out loop poisons every connection
What survives: per-connection queues with drop-tail (sacrifice the slow client, not all), symbol sharding (MU traffic doesn't starve AAPL), and pre-warmed connection pools for the reconnect storm.
Stock Picks's live quote layer runs exactly this — earnings bursts are the test we design for.
Put it on a live wire
Stock Picks runs on RT/SOFT — open the paper app and watch the same fan-out path that powers this latency dashboard.
$ open Stock Picks →