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public:99_annexes:annex-b-terms-and-definitions:d:distributed_system [2026/09/12 17:42] – removed - external edit (Unknown date) 127.0.0.1public:99_annexes:annex-b-terms-and-definitions:d:distributed_system [2026/09/12 17:43] (current) – ↷ Links adapted because of a move operation nick_dido
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 +====== Distributed System ======
  
 +[[public:99_annexes:annex-b-terms-and-definitions:start|Go to Terms and Definitions]]
 +
 +===== Discussion =====
 +
 +A Distributed System allocates coordinated processing, state, data, or services across multiple networked nodes.
 +
 +The nodes communicate through messages and cooperate to provide the behavior of the system.
 +
 +A Distributed System commonly uses a [[public:99_annexes:annex-b-terms-and-definitions:d:distributed_network_topology|Distributed Network Topology]], but the system concept and the network topology remain distinct:
 +
 +  * A Distributed System describes the allocation and coordination of system behavior across nodes
 +  * A Distributed Network Topology describes the arrangement and interconnection of the nodes
 +
 +Characteristics of a Distributed System include:
 +
 +  * Multiple networked nodes
 +  * Message-based communication
 +  * Concurrent operation
 +  * Coordinated processing
 +  * Distributed, replicated, partitioned, or coordinated state
 +  * Partial or independent node failure
 +  * Continued system operation when permitted by the governing architecture
 +
 +The nodes do not need to perform identical functions. Different nodes can provide different roles while participating in the same Distributed System.
 +
 +A Distributed System differs from a [[public:99_annexes:annex-b-terms-and-definitions:c:centralized_system|Centralized System]], which concentrates primary control, processing, authoritative state, or services within a central node or central location.
 +
 +===== Definition =====
 +
 +//system in which coordinated processing, state, data, or services are allocated across multiple networked nodes//
 +
 +===== Source =====
 +
 +  * DIDO Reference Architecture, Network Topology Taxonomy
 +  * DIDO Reference Architecture glossary, Distributed System
 +  * Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
 +
 +===== Note =====
 +
 +A Distributed System does not require every node to hold the same data, perform the same processing, or possess equal authority.
 +
 +The governing architecture determines:
 +
 +  * Node roles
 +  * Data distribution
 +  * State coordination
 +  * Failure handling
 +  * Consistency rules
 +  * Communication mechanisms
 +  * Authority relationships
 +
 +A Distributed System can contain centralized components without becoming a Centralized System when those components do not hold exclusive authority over the complete system.
 +
 +The term does not prescribe peer-to-peer communication, consensus algorithms, blockchain, distributed ledgers, cloud computing, or a particular network protocol.
 +
 +===== Example =====
 +
 +A deployment-management system uses multiple networked nodes to execute deployment operations, collect results, and maintain coordinated environment records.
 +
 +Failure of one execution node does not prevent the remaining nodes from continuing the operations permitted by the system architecture.
 +
 +----
 +
 +<WRAP centeralign>
 +© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.
 +</WRAP>