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Aug 4, 2026 · Backend Development
Why 50,000 Simultaneous Registrations Crashed the System—and How Isolation Prevents It
When an education company faced 50,000 concurrent re‑registration requests, its monolithic internal‑external architecture collapsed, but by physically separating networks, enforcing gateway rate‑limiting and circuit‑breaking, pre‑loading data into Redis, and using one‑way Kafka streams, the system remained stable.
High ConcurrencyKafkaRedis
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