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Challenge

Keep reads fast through a cache restart

Profiles are read far more than written, and a few are very hot. The database has few workers, so reads queue.

At 7 s the cache restarts empty. Keep reads fast and successful through the cold start, within budget.

  • Goodput

    ≥ 99.0%

    every seed

  • Success p99

    < 80 ms

    every seed

  • Budget

    $400/mo

    ★★ at ≤ $320

  • Traffic

    1,500 req/s (Poisson)

    deadline 250 ms

  • Failure · cache

    kill

    at t = 7 s

★★★ adds 1 variant failure timeline.