Server − This is the second process that receives the request, carries it out, and sends a reply to the client. The client-server architecture is the most common distributed system architecture which decomposes the system into two major subsystems or logical processes −Ĭlient − This is the first process that issues a request to the second process i.e. Unpredictability − Unpredictable responses depending on the system organization and network load.Ĭentralized System vs. Manageability − More effort required for system management. Security − More susceptible to external attack. Scalability − Increased throughput by adding new resources.įault tolerance − The ability to continue in operation after a fault has occurred.Ĭomplexity − They are more complex than centralized systems.
#COMPARE TWO RUNS STELLA ARCHITECT SOFTWARE#
Openness − Flexibility of using hardware and software of different vendors.Ĭoncurrency − Concurrent processing to enhance performance. Resource sharing − Sharing of hardware and software resources. Hides whether a resource ( software ) is in memory or disk. Hides failure and recovery of resources from user. Hide resources that may be shared with other users. Hide resources that may be copied at several location. Hide resources that may be moved to another location which are in use. Hides different technologies such as programming language and OS from user. Hides the way in which resources are accessed and the differences in data platform. The following table lists the different forms of transparency in a distributed system − Sr.No. The basis of a distributed architecture is its transparency, reliability, and availability. Middleware as an infrastructure for distributed system Examples are transaction processing monitors, data convertors and communication controllers etc. It sits in the middle of system and manages or supports the different components of a distributed system. It provides a buffer between the applications and the network. Middleware is an infrastructure that appropriately supports the development and execution of distributed applications. NET Web services, AXIS Java Web services, and Globus Grid services.
There are several technology frameworks to support distributed architectures, including. In this architecture, information processing is not confined to a single machine rather it is distributed over several independent computers.Ī distributed system can be demonstrated by the client-server architecture which forms the base for multi-tier architectures alternatives are the broker architecture such as CORBA, and the Service-Oriented Architecture (SOA). In distributed architecture, components are presented on different platforms and several components can cooperate with one another over a communication network in order to achieve a specific objective or goal.
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