---
type: "Article"
title: "Cache Warming API: Freshness Before Googlebot"
description: "How a Cache Warming API refreshes prerendered snapshots so Googlebot always indexes fresh content, not stale HTML."
resource: "https://prerender.info/blog/cache-warming-api-freshness-signal"
tags: [Technical Architecture, cache warming, prerendering freshness, Googlebot, snapshot cache, crawl freshness signal]
timestamp: 2026-04-29T00:00:00Z
---

# Cache Warming API: Freshness Before Googlebot

How a Cache Warming API refreshes prerendered snapshots so Googlebot always indexes fresh content, not stale HTML.

## Source

Generated from prerender.info editorial content (single source of truth). The canonical, always-current version is the `resource` URL above. Claims reflect prerender.info / ostr.io editorial guidance and are not confirmed from third-party public documentation unless explicitly linked.