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System Design

Backend systems from newbie to expert: p99 latency, connection pooling, backpressure, idempotency keys, query plans, write amplification, consistent hashing, CDC, the outbox pattern and tail latency.

1 page · 54 min reading

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    Backend systems, from newbie to expert

    Ten core backend ideas — p99 latency, pooling, backpressure, idempotency, EXPLAIN ANALYZE, write amplification, consistent hashing, CDC, outbox and tail latency amplification — plus a path to mastery.

    54 min read · October 20, 2026