Sessionization is the analytics primitive behind every 'how do users actually behave' question, and a favorite practical screen. The algorithm is easy; out-of-order events and duplicates are where the round is actually scored.
Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
Sessionization is the analytics primitive behind every 'how do users actually behave' question, and a favorite practical screen. The algorithm is easy; out-of-order events and duplicates are where the round is actually scored.
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