CacheBoost Warmer – Cache Preload after Purge

Every cache purge leaves your pages “cold”: the first visitor after a purge pays the full origin render time. CacheBoost Warmer closes that gap. Whenever a purge or invalidation occurs in WordPress, it tells the CacheBoost API to re-warm the affected pages, so your cache stays hot and every visitor hits a fast, cached response.

Free plan: 500 warmed URLs per month, no credit card. The plugin requires a CacheBoost account (sign up); warming requests are sent from CacheBoost’s servers in 12 regions, not from your hosting.

Features:

• Smart warming — resolves purged post/term URLs and triggers a targeted warm (only the affected pages).
• Full warming — triggers a full site warming on global events (theme switch, plugin upgrade, full cache purge).
• Deduplication — multiple purge events within the same HTTP request produce a single API call.
• Non-blocking — uses wp_remote_post() with blocking => false; never delays a WordPress request.
• WooCommerce — warms product and category pages on save; optional stock-change warming.
• Cache plugin integrations — WP Rocket, W3 Total Cache, LiteSpeed Cache, WP Super Cache.
• Multisite — each sub-site has its own settings and API key.

Configuration

Step 1 — Connect

In the CacheBoost menu, click Connect to CacheBoost, then sign in or create a free account and click Authorize. Back in WordPress, everything is set up: your site is added to your CacheBoost account and validated, its sitemap is registered, and a Boost is created for full-site warming.

Prefer an API key? Generate one in your profile with the scopes sites:read, sites:write, boosts:read, boosts:write, runs:read, and paste it in the API Key field.

Step 2 — Adjust the settings (optional)

• Enable — master on/off switch.
• Warming triggers — Smart (targeted URLs) and/or Full (entire site), each can be toggled independently.
• Stock Warming — (WooCommerce only) warm product pages after stock changes.
• Test Connection — validate your API key without leaving the admin. If your domain is not yet validated in CacheBoost, the plugin validates it automatically (requires the sites:write scope).

Cache plugin support

WP Rocket, W3 Total Cache, LiteSpeed Cache, WP Super Cache

External Services

This plugin sends data to the CacheBoost API (https://api.cache-boost.com) to trigger cache warming jobs after a purge event. Data transmitted includes the site URL, the list of page URLs to warm and a timestamp. No personal user data is sent.

Requests are only made when:
– The plugin is enabled in the CacheBoost settings
– A valid API key (format: cb_live_…) has been configured

CacheBoost Terms of Service: https://www.cache-boost.com/terms