Mediator pattern
The Mediator pattern is a behavioral design pattern that centralizes coordination among otherwise interdependent components through an intermediary.
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The Mediator pattern is a behavioral design pattern that centralizes communication among objects through a mediator to reduce their direct dependencies.
- How it is used
- Decouples a Kafka adapter from AssetManager while preserving event-driven asset-location updates.
- How deep it goes
- Explains the pattern through a mediator implementation, constructor wiring, event publication, and handler registration.
- Examples
- Uses an AssetLocationMediator, AssetLocationUpdated events, AssetManager handlers, and Kafka asset_location messages.
- What you can do after
- Build it from scratch by introducing a mediator, injecting it into a consumer, and registering domain handlers for published events.
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Infrastructure as Code, Patterns and Practices: With examples in Python and Terraform
A mediator pattern organizes dependencies among infrastructure resources and includes logic to create or delete objects based on their dependencies.
- How it is used
- Controls infrastructure automation when multiple resources depend on one another.
- How deep it goes
- Explains dependency ordering, recursive creation, idempotency, and trade-offs, but leaves complete mediator testing to implementation.
- Examples
- Uses networks, servers, firewall rules, Python factory modules, and an optional load balancer sequence.
- What you can do after
- Build it from scratch by coordinating resource factories in dependency order and preserving repeatable target-state execution.
Related concepts
- dependency injectionuses · Dependency injection is a software design technique in which a component receives its dependencies from outside rather than creating or locating them internally.
- design patternkind of · A design pattern is a reusable, general solution structure for a recurring software design problem in a particular context.
- idempotencyuses · Idempotency is the property of an operation whereby repeating it has the same effective result or externally observable effect as performing it once.
- Kubernetesused by · Kubernetes is an open-source platform for orchestrating and automating the deployment, scaling, and management of containerized workloads across computing clusters.
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