components be implemented using parts phd thesis thanks of the same code (e.g., shared libraries). What are the delimitations of the study, as in what is the extent to which the study may be generalized in the field of practice? Figure 5-9 depicts the derivation of rest's constraints graphically in terms of the network-based architectural styles examined in Chapter. Any data that must be received before the recipient can begin rendering the representation adds to the latency of an interaction. Perry and Wolf 105 describe three important views in software architecture: processing, data, and connection views. Since referring to a named set of constraints as a style makes it easier to communicate the characteristics of common constraints, we use architectural styles as a method of abstraction, rather than as an indicator of personalized design. Shaw 119 compares a variety of box-and-arrow designs for an automobile cruise control system, each done using a different design methodology and encompassing several architectural styles. As with other event-based schemes, C2 is nominally push-based, though a C2 architecture could operate in rest's pull style by only emitting a notification upon receipt of a request. 5.1.4 Cache, in order to improve network efficiency, we add cache constraints to form the client-cache-stateless-server style.
Rest interaction is therefore improved by protocols that "respond first and think later." In other words, a protocol that requires multiple interactions per user action, in order to do things like negotiate feature capabilities prior to sending a content response, will be perceptively slower than. A complex system will contain many levels of abstraction, each with its own architecture. Loerke 76 devotes a chapter to denigrating the notion that personal stylistic concerns have any place in the work of a professional architect. Connectors enable communication between components by transferring data elements from one interface to another without changing the data. This section provides a general overview of rest by walking through the process of deriving it as an architectural style. Where the first emphasizes creativity and unbounded vision, the second emphasizes restraint and understanding of the system context. Rest does not restrict communication to a particular protocol, but it does constrain the interface between components, and hence the scope of interaction and implementation assumptions that might otherwise be made between components. The rationale for this design can be seen in the nature of distributed hypermedia.