Benchmark: Class method versus factory manager

HTML Preparation code:

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Script Preparation code:

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async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

Tests:

Class method
class TransformComponent { constructor(scaleX = 1.0, scaleY = 1.0, rotation = 0.0) { this.scaleX = scaleX; this.scaleY = scaleY; this.rotation = rotation; } scale(factor = 1.0) { this.scaleX *= factor; this.scaleY *= factor; } }; for(let i = 0; i < 10000; i++) { const transform = new TransformComponent(i, i, i); transform.scale(2.0); }
Factory manager
const components = new Map; const noop = () => {}; const componentsMethodCaller = (factory, methodName, ...values) => { const methods = components.get(factory); return (methods[methodName] || noop).apply(null, values); } const transformFactory = (scaleX = 1.0, scaleY = 1.0, rotation = 0.0) => { return { scaleX, scaleY, rotation, }; } components.set(transformFactory, { scale(component, factor = 1.0) { component.scaleX *= factor; component.scaleY *= factor; }, }); for(let i = 0; i < 10000; i++) { const transform = transformFactory(i, i, i); componentsMethodCaller(transformFactory, 'scale', 2.0); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Class method
Factory manager

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 19 hours ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.1 Safari/605.1.15

Browser/OS: Safari 15 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Class method	4393.5 Ops/sec
Factory manager	1118.0 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 18 hours ago):

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The provided JSON defines a benchmark that compares two different approaches for creating and using transform components in JavaScript: a class-based implementation and a factory-based implementation with a method manager.

### 1. Overview of the Approaches

#### Class Method
- **Implementation**: This approach defines a `TransformComponent` class, which encapsulates the properties and methods for transformation. Each instance of the class has methods that can be invoked directly (e.g., `scale`).
- **Performance**: The benchmark indicates that the class method performs better than the factory manager, executing approximately 4393.46 operations per second.
- **Advantages**:
  - **Encapsulation**: The class approach encapsulates data and behavior together, making the code clearer in terms of structure.
  - **Inheritance**: This pattern readily supports inheritance and polymorphism, allowing for more complex designs.
- **Disadvantages**:
  - **Overhead**: Instantiating classes may incur some overhead compared to plain objects, especially if many instances are created frequently.
  - **Memory Usage**: Each instance maintains its own scope, which can lead to increased memory usage.

#### Factory Manager
- **Implementation**: This approach utilizes a factory function to create plain JavaScript objects (rather than instances of a class) and manages methods through a `Map` for dynamic dispatch. The `componentsMethodCaller` function invokes methods on these objects.
- **Performance**: This implementation executes approximately 1118.00 operations per second, which is notably slower than the class method.
- **Advantages**:
  - **Simplicity**: Reasonably straightforward to implement, especially for simple data structures.
  - **Flexibility**: Can easily create multiple component types and vary behavior through method injection.
- **Disadvantages**:
  - **Verbosity**: The factory and method manager approach requires additional setup, which can make the code less intuitive.
  - **Dynamic Dispatch Cost**: The use of a map and dynamic method calling adds overhead, slowing down execution.

### 2. Considerations
- **Suitability**: The class method might be preferable in contexts where the structural benefits of encapsulation and inheritance matter, such as larger codebases with complex component interactions. Conversely, for lightweight applications where a simple functional approach suffices, a factory method might be appropriate.
- **Performance Context**: The benchmarks are executed in a specific environment (Safari 15 on macOS). Performance can differ significantly across browsers and systems, so results should be interpreted in that context.

### 3. Alternatives
- **Functional Programming**: Instead of classes or factory functions, one could consider purely functional approaches where functions return new instances, keeping immutability as a core principle.
- **Prototypes**: Using JavaScript’s prototype inheritance could provide a middle ground between class overhead and factory simplicity, allowing behavior to be shared without needing to create a new instance every time.
- **Libraries**: For complex component management, libraries such as React or Vue.js could be employed, where components encapsulate behavior and state.

### Conclusion
In this benchmark, the class method outperformed the factory manager approach primarily due to reduced overhead from dynamic method invocation. Each approach has distinct advantages and trade-offs that can guide a developer's choice depending on the specific use case and performance needs. These considerations are crucial when designing a system architecture, especially in the context of large applications where efficiency and maintainability are paramount.

Related benchmarks:

Class method versus factory manager (version: 1)

Comparing performance of: Class method vs Factory manager

Created: 19 hours ago by: Guest

Jump to the latest result

Class method

Factory manager

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 18 hours ago):