Abstract: A system for caching content including a server supplying at least one of static and non-static content elements, content distinguishing functionality operative to categorize elements of the non-static content as being either dynamic content elements or pseudodynamic content elements, and caching functionality operative to cache the pseudodynamic content elements. The static content elements are content elements which are identified by at least one of the server and metadata associated with the content elements as being expected not to change, the non-static content elements are content elements which are not identified by the server and/or by metadata associated with the content elements as being static content elements, the pseudodynamic content elements are non-static content elements which, based on observation, are not expected to change, and the dynamic content elements are non-static content elements which are not pseudodynamic.

Abstract: A secure transaction system including a content delivery network defining edge gates for secure communication with entities outside the network, each edge gate including at least one of encryption and decryption functionality, the encryption functionality being operative to encrypt customer payment card information into no payment card zone (NPCZ) capsules and the decryption functionality being operative to decrypt the NPCZ capsules into customer payment card information securely supplied to at least one of a plurality of payment processing entities, the content delivery network defining a NPCZ, and a plurality of seller entities within the NPCZ which conduct transactions with a plurality of customers and with at least one of the payment processing entities, and receive, process and transmit customer payment information using the NPCZ capsules, the plurality of seller entities not having access to unencrypted payment card information and not having the ability to decrypt encrypted payment card information.

Abstract: A system for caching content including a server supplying at least one of static and non-static content elements, content distinguishing functionality operative to categorize elements of the non-static content as being either dynamic content elements or pseudodynamic content elements, and caching functionality operative to cache the pseudodynamic content elements. The static content elements are content elements which are identified by at least one of the server and metadata associated with the content elements as being expected not to change, the non-static content elements are content elements which are not identified by the server and/or by metadata associated with the content elements as being static content elements, the pseudodynamic content elements are non-static content elements which, based on observation, are not expected to change, and the dynamic content elements are non-static content elements which are not pseudodynamic.