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This commit is contained in:
Ilkka Seppälä
2024-06-08 19:54:44 +03:00
committed by GitHub
parent cb946c0cdc
commit 6cd2d0353a
219 changed files with 3308 additions and 2819 deletions
+19 -15
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@@ -1,21 +1,23 @@
---
title: Registry
title: "Registry Pattern in Java: Implementing a Centralized Control Mechanism for Java Objects"
shortTitle: Registry
description: "Explore the Registry design pattern in Java: Learn how it centralizes object management for improved access and control. Perfect for software developers and architects looking to optimize Java application architecture."
category: Creational
language: en
tag:
- API design
- Data access
- Decoupling
- Dependency management
- Enterprise patterns
- Instantiation
- API design
- Data access
- Decoupling
- Dependency management
- Enterprise patterns
- Instantiation
---
## Intent
## Intent of Registry Design Pattern
To centralize the creation and management of a global set of objects, providing a single point of access and ensuring controlled instantiation.
Registry Design Pattern centralizes the creation and management of a global set of objects, providing a single point of access and ensuring controlled instantiation.
## Explanation
## Detailed Explanation of Registry Pattern with Real-World Examples
Real-world example
@@ -36,7 +38,7 @@ wiki.c2.com says
> A registry is a global association from keys to objects, allowing the objects to be reached from anywhere. It involves two methods: one that takes a key and an object and add objects to the registry and one that takes a key and returns the object for the key. It's similar to the MultitonPattern, but doesn't restrict instances to only those in the registry.
**Programmatic Example**
## Programmatic Example of Registry Pattern in Java
The Registry design pattern is a well-known pattern used in software design where objects are stored and provide a global point of access to them. This pattern is particularly useful when you need to manage a global collection of objects, decouple the creation of objects from their usage, ensure a controlled lifecycle for objects, and avoid redundant creation of objects.
@@ -110,23 +112,25 @@ Running the example produces the following output:
09:55:31.113 [main] INFO com.iluwatar.registry.App -- Julia Customer{id='2', name='Julia'}
```
## Applicability
## When to Use the Registry Pattern in Java
* When you need to manage a global collection of objects.
* When you need to decouple the creation of objects from their usage.
* When you need to ensure a controlled lifecycle for objects, such as services or resources.
* When you want to avoid redundant creation of objects.
## Known Uses
## Real-World Applications of Registry Pattern in Java
* Managing database connections in an enterprise application.
* Providing a central place to register and retrieve services or components in a modular application.
* Creating a central configuration registry that various parts of an application can access.
## Consequences
## Benefits and Trade-offs of Registry Pattern
Benefits:
Key advantages of adopting the Registry pattern in Java
* Centralizes object management, making the application easier to maintain.
* Promotes reuse and sharing of objects, which can reduce memory footprint and initialization time.
* Facilitates decoupling between components.
@@ -145,7 +149,7 @@ Trade-offs:
* [Dependency Injection](https://java-design-patterns.com/patterns/dependency-injection/): Provides an alternative method for managing dependencies, which can sometimes replace the need for a Registry.
* [Multiton](https://java-design-patterns.com/patterns/multiton/): Similar to the Registry in that it manages multiple instances, but does so based on keys, ensuring only one instance per key.
## Credits
## References and Credits
* [Design Patterns: Elements of Reusable Object-Oriented Software](https://amzn.to/3w0pvKI)
* [Patterns of Enterprise Application Architecture](https://amzn.to/3WfKBPR)