Concurrency

Kind: model

Layer: Performance Core

Record: architecture:concurrency

Severity: contextual

Scope: runtime, service, algorithm

Canonical: Ontology

A conceptual representation of several tasks in progress over overlapping time, with their access to shared state coordinated.

Listed in Architecture principles, after Statelessness and before Parallelism.

Requires

• Concurrency Control

Reinforces

• Throughput

Enables

• Overlapping Work

Conflicts with

• Race Conditions

In tension with

• Complexity

Tensions

• Concurrency / Complexity

Violated by

• Race Conditions

Refactored by

• Apply Concurrency Control
• Make Immutable

Severity

• contextual

Category

• Scalability / Performance / Optimization

Linked from

• Orchestration as declared structure
• Scalability / Performance / Optimization
• Transactions / State / Concurrency
• Core Vocabulary
• Quality Attributes
• Scalability / Performance / Optimization
• Transactions / State / Concurrency
• Severity levels
• The resolutions