Abstract: Systems, methods, and non-transitory computer-readable media can generate subscription information associated with a user and a content item, wherein the subscription information is indicative of the user viewing the content item. The subscription information is stored at a first data center. A determination is made to replicate the subscription information based on replication criteria. The subscription information is replicated to one or more additional data centers based on the making the determination to replicate the subscription information.

Abstract: The present invention provides an efficient secure end-to-end messaging system utilizing encrypted ephemeral messages. The method comprises the steps of using a combination of HTTPS for transport security, using symmetric key cryptography with rotating temporary keys for individual message security, and using elliptic curve cryptography for key derivation and message authentication. The key rotation scheme used provides forward secrecy between messages and sessions.

Abstract: The present invention provides an efficient secure end-to-end messaging system utilizing encrypted ephemeral messages. The method comprises the steps of using a combination of HTTPS for transport security, using symmetric key cryptography with rotating temporary keys for individual message security, and using elliptic curve cryptography for key derivation and message authentication. The key rotation scheme used provides forward secrecy even between messages and perfect forward secrecy between sessions.