Rapid development of miniaturization technologies helps create small and easily portable devices. This enables users to work with their information systems (IS) almost anywhere. The only obstacle, however, may be a poor network connection, which can make the system inaccessible. One of the solutions is creating a distributed information system with asynchronous data update. Then the user operates over the local data, and they do not necessarily need an instant network connection through a server. Later, with a connection available, the local data are merged with the rest of the system. This concept will effectively solve the situations in which two users are editing the same data. Below we present a new architectural pattern for designing such IS.