Partial Failure, Timeouts, and Retries
A timeout says the caller stopped waiting, not what the remote work did. See how partial failure, retry storms, and duplicates arise, and which defenses help.
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Load Shedding
Load shedding rejects some requests cheaply so the rest can succeed — because serving 70 percent well beats failing slowly at all of it.
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Operating Streams: Backpressure and Replay
Lag, replay, and upgrades are where stateful streaming jobs usually fail. Work through the arithmetic and the procedures that keep restarts and rollouts safe.
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Backpressure
Understand how slow downstream work limits upstream progress, calculate backlog growth, and distinguish buffering from extra processing capacity.