Benchmark: UUID Generation compare

Script Preparation code:

window.generateUUID = () => {
    return Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);
};

Tests:

Crypto randomUUID
const uuid = crypto.randomUUID();
generateUUID
const uuid = generateUUID();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Crypto randomUUID
generateUUID

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser/OS: Chrome 121 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Crypto randomUUID	1045090.4 Ops/sec
generateUUID	1703709.9 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in the provided benchmark.

**Benchmark Overview**

The benchmark is designed to compare two approaches for generating unique identifiers (UUIDs): `generateUUID()` and using the `crypto.randomUUID()` function from the Web Cryptography API.

**Options Compared**

There are two options compared:

1. **generateUUID()**: A custom function that generates a UUID by concatenating two random strings.
2. **crypto.randomUUID()**: A built-in function in modern browsers that generates a cryptographically secure UUID using the Web Cryptography API.

**Pros and Cons of Each Approach**

1. **generateUUID()**:
	* Pros: Easy to implement, simple, and fast.
	* Cons: May not be as cryptographically secure as `crypto.randomUUID()`, and the generated UUIDs may not be unique (since it's based on random strings).
2. **crypto.randomUUID()**:
	* Pros: Generates highly secure, cryptographically strong UUIDs that are guaranteed to be unique.
	* Cons: More complex to implement, requires a modern browser with support for Web Cryptography API.

**Library and Purpose**

In this benchmark, the `crypto` library is used to access the Web Cryptography API. The `randomUUID()` function from this library generates a cryptographically secure UUID that meets certain security standards.

**Special JavaScript Feature/Syntax**

The `crypto.randomUUID()` function uses the Web Cryptography API, which is a relatively new feature in modern browsers. This allows for more secure and efficient generation of unique identifiers.

**Other Considerations**

When choosing between these two approaches, consider the level of security required for your use case. If you need highly secure UUIDs that are guaranteed to be unique, `crypto.randomUUID()` is the better choice. However, if you're looking for a simple and fast way to generate UUIDs without requiring advanced cryptographic capabilities, `generateUUID()` may suffice.

**Alternative Approaches**

Other alternatives for generating UUIDs include:

1. **Date-based UUID**: Generate a UUID based on the current timestamp or date.
2. **Hash-based UUID**: Use a hash function (e.g., SHA-256) to generate a UUID from a random input.
3. **External UUID generation services**: Use an external service that generates UUIDs, such as UUID.com.

However, these approaches may not offer the same level of security and uniqueness as `crypto.randomUUID()`.

Related benchmarks:

UUID Generation compare (version: 0)

Comparing performance of: Crypto randomUUID vs generateUUID

Created: one year ago by: Registered User

Jump to the latest result

Crypto randomUUID

generateUUID

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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