distributed systemsexpertReddit r/SaaS founder pain-point threadMAX
Backpressure Collapse in Reactive Stream Fan-Out Topologies : Retry, Timeout, and Circuit-Breaker Composition Failures
KotlinApache PulsargRPCMicrometer
Problem Breakdown
The defect class here is composition: individually sensible timeouts, retries, and circuit breakers interact multiplicatively when layered across a call graph. A fast publisher fans out into N slow subscribers through unbounded or naively-bounded queues; the slowest subscriber's consumption rate silently becomes the to…
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