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Quantitative Finance · Glossary

What is Deterministic replay?

Definition 23.3 Low-Latency Software · Chapter 23 — Logging, Capture and Replay

A deterministic replay runs a program on an input journal, in the journal’s order, with time taken from the journal, and produces bit for bit the outputs that the program produced when the journal was recorded; it requires the program to be deterministic (chapter 20) and the journal to be complete.

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