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You really can't control how long something stays in a browser cache. The user can clear it at any time. Mine are cleared every time I close the browser.
by ams6110 8y ago
You really can't control how long something stays in a browser cache. The user can clear it at any time. Mine are cleared every time I close the browser.
- Illniyar 8y agoLike I said the header isn't to control how long something stays in the cache. It's to control how often the browser needs to check if the content changed.