The original title is "Four Questions to Ask Before Celebrating a 4x Proxy Benchmark"

Short summary

The article presents a four-question framework for critically evaluating proxy benchmark claims—like ClickHouse's 4x PgBouncer throughput result—before applying them to your own systems. It covers workload characterization, explicit load modeling with arrival-rate and capacity formulas, resource profiling including tail latency, and failure-semantics testing across four phases. A throughput multiplier alone is insufficient; actionable results require declared workloads, SLO-compliant tail latency, database headroom, and tested recovery behavior.

• •Define and record full workload context: connection count, query mix, payload size, TLS mode, and test duration before trusting any multiplier
• •Model explicit capacity ceilings: min(workers × μ, D, network ceiling) and verify the proxy is the actual binding constraint
• •Test failure semantics across four phases: nominal load, ramp past capacity, slow database injection, and worker termination

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