Benchmark: Proxy<Map> vs Object

Script Preparation code:

object = {
    value: 'data'
};
map = new Map([
    ['value', 'data']
]);
proxy = new Proxy(object, {})
proxyWithHandler = new Proxy(map, {
    get(target, prop, receiver) {
        return target.get(prop);
    }
})

Tests:

Map access
map.get('value');
Object access
object.value;
Proxy access
proxy.value;
Proxy with get handler access
proxyWithHandler.value;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Map access
Object access
Proxy access
Proxy with get handler access

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser/OS: Chrome 111 on Linux

View result in a separate tab

Test name	Executions per second
Map access	10076119.0 Ops/sec
Object access	9446074.0 Ops/sec
Proxy access	7601316.5 Ops/sec
Proxy with get handler access	7116769.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided benchmark compares the performance of accessing data using three different approaches: `Map`, `Object`, and `Proxy`. The test cases measure the execution time of accessing specific properties (`value`) using each approach.

**Options Compared**

The benchmark compares the following options:

1. **Map access**: Accessing a value in a `Map` object.
2. **Object access**: Accessing a property in an `Object`.
3. **Proxy access**: Accessing a value through a `Proxy` object.
4. **Proxy with get handler access**: Accessing a value through a `Proxy` object using a custom getter function.

**Pros and Cons**

*   **Map access**: Fast, as it uses direct memory access to retrieve the value. However, it may not be suitable for large datasets or complex data structures.
*   **Object access**: Also fast, as it uses direct memory access to retrieve the property. Similar to Map access, it's suitable for small to medium-sized datasets and simple data structures.
*   **Proxy access**: Can provide additional functionality, such as validation or transformation of values, but may introduce overhead due to the proxy creation process. It's a good choice when you need more control over data access.
*   **Proxy with get handler access**: Offers fine-grained control over data access through custom getter functions. However, it can also introduce significant overhead due to the complexity of the getter function.

**Library and Purpose**

*   The `Map` object is a built-in JavaScript object that stores key-value pairs in an ordered sequence.
*   The `Proxy` object is used to create a new object that wraps around another object or value, allowing for custom behavior and validation during access.

**Special JS Features and Syntax**

None mentioned explicitly in the provided benchmark definition. However, it's worth noting that JavaScript has several features that can impact performance, such as:

*   **Closures**: Can introduce overhead due to the creation of a new scope.
*   **Async/Await**: Can have significant effects on performance depending on the context.

**Other Alternatives**

For alternative approaches or optimizations, consider the following options:

1.  **Caching**: Implementing caching mechanisms can improve performance by reducing the number of times data is accessed or computed.
2.  **Parallelization**: If possible, run multiple iterations concurrently to take advantage of multi-core processors and improve overall throughput.
3.  **Optimized Data Structures**: Depending on the specific requirements, using optimized data structures like hash tables, binary search trees, or other specialized data structures can lead to better performance.

Keep in mind that these alternatives may require additional overhead or complexity, so it's essential to weigh their benefits against your specific use case and performance requirements.

Related benchmarks:

Proxy<Map> vs Object (version: 1)

Comparing performance of: Map access vs Object access vs Proxy access vs Proxy with get handler access

Created: 2 years ago by: Registered User

Jump to the latest result

Map access

Object access

Proxy access

Proxy with get handler access

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):