Techniques are presented for indefinite caching expiration techniques. A browser page includes a reference to an object. A client browser acquires a version of the browser page on each access attempt by the client to a site associated with the browser page. The browser acquires or downloads the object (along with perhaps a maximum value for the expiration header equivalent to an indefinite expiry) into client cache via the reference on a first access attempt of the browser page and subsequently does not re-request the object from the site; rather, when the object changes the browser page is updated with a new name for the object thereby forcing the browser to re-request and re-acquire the object on demand and just when the object is modified.

 
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