Change data capture

<div class="demo"><div class="head"><b>CHANGE DATA CAPTURE</b><span>UPDATE #51</span></div><div class="stage pipeline"><div class="cell">row</div><i>→</i><div class="cell">log</div><i>→</i><div class="cell">event</div><i>→</i><div class="cell">index</div></div><div class="foot"><span id="cdcstatus">row changed</span><span>downstream sync</span></div></div>

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let n=0;const labels=['row changed','log captured','event delivered','index refreshed'];function tick(){document.querySelectorAll('.pipeline .cell').forEach((e,i)=>e.classList.toggle('on',i<=n));document.getElementById('cdcstatus').textContent=labels[n];n=(n+1)%4}tick();const t=setInterval(tick,700);document.querySelector('.demo').onclick=()=>{clearInterval(t);tick()}