1. A system, comprising: a distributed store comprising a primary state of session data accessible by a plurality of application servers, wherein the session data comprises a plurality of attributes; and a first one of the application servers comprising a client state of the session data accessible by one or more processes; wherein the first application server is configured to provide a set of attributes of the session data for synchronizing the primary state with the client state, wherein the first application server is configured to exclude from the set immutable attributes of the session data; wherein the distributed store is configured to synchronize the primary state with the client state according to the provided set of attributes.