Regex performance safety deck
Recall common ReDoS warning signs and safer mitigation moves.
Happy path objection It is fine; all real coupon codes are short. The regex runs on public request input. Your line Attackers choose inputs, so we need a length cap or a pattern with a cheap failure path. Production examples do not bound adversarial behavior. The response shifts the review from normal cases to worst-case work. Warning sign Which shape should trigger a ReDoS review? Nested or overlapping repetition such as (a+)+, ([A-Z]+), or (.a){n}. These shapes can create many equivalent paths for a backtracking engine. Rewrite compare Nested repeat vs delimiter repeat Safer patterns reduce ambiguity and name the…
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