Skill Vault — MeritAfrica Candidate Portal

Overall score

Top 8% percentile

Time to complete

24 min

45 min limit

Execution speed

38 ms

worst-case test run

Integrity confidence

99%

0 signals logged

Streaming Rate Limiter

Software Engineering · JavaScript · verified 2026-01-01

Generalist

Passed

Correctness94%

Code efficiency94%

Integrity confidence99%

Plagiarism similarity2%

Submitted solution

function rateLimit(events, windowMs, max) {
  const seen = new Map();
  return events.filter((e) => {
    const bucket = seen.get(e.userId) ?? [];
    const live = bucket.filter((t) => e.ts - t < windowMs);
    if (live.length >= max) return false;
    live.push(e.ts);
    seen.set(e.userId, live);
    return true;
  });
}