The Cache Belongs to the Function

<p>We've covered <code>full route cache</code>, <code>data cache</code> and revalidation. Next, we look into <code>router cache</code> and <code>request memoization</code>.</p>

<p>Every high-traffic system eventually hits the same wall: your data store can't keep up. For us, the breaking point came when a simple product lookup — backed by Elasticsearch —

<p>If you've ever opened DevTools and watched the same API call fire <strong>over and over again</strong> — for data that hasn't changed in hours — this article is for you.</p>

<p>I spent an afternoon debugging a component that kept re-fetching on every single request.</p> <p>It had <code>'use cache'</code> right there in the code. I was confident it was

<p>The last post here got picked apart in the comments in the best possible way. <a class="mentioned-user" href="https://dev.to/nazar-boyko">@nazar-boyko</a> asked the sharpest

<h2> The bug: the API was correct, but the user saw data from another context </h2> <p>A cache often breaks after switching user, tenant, active account, or permission set. The