Cache purging should be driven by content and asset changes rather than a fixed schedule. Purge when you
deploy new theme or plugin versions, change global styles or scripts, or publish major content updates
that alter critical templates. For static media (images, fonts), infrequent purges are fine—these assets
benefit the most from long‑lived caching. If you employ query‑string versioning for CSS/JS, you can
purge less often because new versions create distinct URLs, prompting browsers to fetch the updated
files automatically.
At the CDN level, align purge operations with origin changes to avoid serving stale resources. Some teams
implement automatic purges as part of their deployment pipeline, which is ideal for keeping caches
consistent. The plugin also offers a “refresh cache” approach using a constant
Last-Modified header, but use it intentionally so it doesn’t conflict with CDN behaviors.
As a rule of thumb: purge after meaningful changes, not continuously. Excessive purging erodes the
benefits of caching and increases origin load. Monitor analytics and performance metrics to determine
whether your cadence is striking the right balance between freshness and speed.