diff --git a/website/matchers/random.ts b/website/matchers/random.ts
index 25ba92f74..35abcdc4d 100644
--- a/website/matchers/random.ts
+++ b/website/matchers/random.ts
@@ -20,3 +20,7 @@ const MatchRandom = (
 };
 
 export default MatchRandom;
+
+export const sessionKey = (props: Props) => {
+  return `${props.traffic}`;
+}
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