Arcitura IT Certified Professionals (AITCP)
Arcitura IT Certified Professionals (AITCP)
Arcitura IT Certified Professionals (AITCP)
Arcitura YouTube Channel
- Overview
- Introduction
- History
- Acknowledgements
- Podcasts
- Candidate Patterns
- Forms
- Press Releases
- Resources
- Compound Patterns
- Design Patterns (alphabetical)
- Overview
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Agnostic Capability
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Agnostic Context
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Agnostic Sub-Controller
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Asynchronous Queuing
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Atomic Service Transaction
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Brokered Authentication
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Canonical Expression
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Canonical Protocol
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Canonical Resources
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Canonical Schema
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Canonical Versioning
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Capability Composition
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Capability Recomposition
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Compatible Change
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Compensating Service Transaction
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Composition Autonomy
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Concurrent Contracts
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Content Negotiation
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Contract Centralization
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Contract Denormalization
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Cross-Domain Utility Layer
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Data Confidentiality
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Data Format Transformation
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Data Model Transformation
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Data Origin Authentication
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Decomposed Capability
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Decoupled Contract
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Direct Authentication
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Distributed Capability
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Domain Inventory
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Dual Protocols
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Endpoint Redirection
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Enterprise Inventory
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Entity Abstraction
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Entity Linking
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Event-Driven Messaging
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Exception Shielding
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File Gateway
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Functional Decomposition
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Idempotent Capability
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Intermediate Routing
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Inventory Endpoint
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Legacy Wrapper
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Lightweight Endpoint
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Logic Centralization
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Message Screening
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Messaging Metadata
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Metadata Centralization
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Multi-Channel Endpoint
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Non-Agnostic Context
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Partial State Deferral
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Partial Validation
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Policy Centralization
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Process Abstraction
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Process Centralization
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Protocol Bridging
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Proxy Capability
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Redundant Implementation
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Reliable Messaging
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Reusable Contract
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Rules Centralization
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Schema Centralization
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Service Agent
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Service Callback
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Service Data Replication
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Service Decomposition
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Service Encapsulation
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Service Façade
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Service Grid
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Service Instance Routing
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Service Layers
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Service Messaging
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Service Normalization
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Service Perimeter Guard
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Service Refactoring
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State Messaging
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State Repository
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Stateful Services
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Termination Notification
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Trusted Subsystem
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UI Mediator
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Utility Abstraction
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Validation Abstraction
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Version Identification
- Design Patterns (by category)
- Foundational Inventory Patterns
- Logical Inventory Layer Patterns
- Inventory Centralization Patterns
- Inventory Implementation Patterns
- Inventory Governance Patterns
- Foundational Service Patterns
- Service Implementation Patterns
- Service Security Patterns
- Service Contract Design Patterns
- Legacy Encapsulation Patterns
- Service Governance Patterns
- Capability Composition Patterns
- Service Messaging Patterns
- Composition Implementation Patterns
- Service Interaction Security Patterns
- Transformation Patterns
- REST-inspired Patterns
- Cloud Computing Patterns
- Service Technology Specs
- SOA School
Stateful Services (Erl)
How can service state data be persisted and managed without consuming service runtime resources?
Problem
State data associated with a particular service activity can impose a great deal of runtime state management responsibility upon service compositions, thereby reducing their scalability.
Solution
State data is managed and stored by intentionally stateful utility services.
Application
Stateful utility services provide in-memory state data storage and/or can maintain service activity context data.
Impacts
If not properly implemented, stateful utility services can become a performance bottleneck.
Principles
Service StatelessnessArchitecture
Inventory, Service
With the use of stateful utility services, state management responsibilities are deferred.
Related Patterns in This Catalog
Logic Centralization, Messaging Metadata, Partial State Deferral, Service Grid, Service Messaging, State Messaging, State Repository, Utility Abstraction
Related Patterns in Other Catalogs
Related Service-Oriented Computing Goals
Increased Intrinsic Interoperability, Increased ROI, Reduced IT Burden
This page contains excerpts from:
SOA Design Patterns by Thomas Erl
Foreword by Grady Booch
With contributions from David Chappell, Jason Hogg, Anish Karmarkar, Mark Little, David Orchard, Satadru Roy, Thomas Rischbeck, Arnaud Simon, Clemens Utschig, Dennis Wisnosky, and others.
(ISBN: 0136135161, Hardcover, Full-Color, 400+ Illustrations, 865 pages)
For more information about this book, visit www.servicetechbooks.com.