Shreyash @webdevcaptain.com · May 13 5/ 3. Fixed Window Time sliced into rigid blocks (every 60 seconds). Count inside the block, reset sharp at the boundary. Superpower: Dead simple, almost zero memory. Big catch: Everyone games it – spam at 11:59 + 12:01 and you sneak double the limit.
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6/ 4. Sliding Window Log Store a timestamp for every single req. On new req, drop anything older than the window & count the rest. Superpower: Most accurate – no boundary tricks possible. Catch: Memory explodes at scale (millions of timestamps = pain) Only when absolute fairness is non-negotiable.