Benchmark: Math random UUID vs crypto UUID

Script Preparation code:

var uuid;

var broofa = () => {
    return Math.random().toString() + Math.random().toString()
}

Tests:

math.random
uuid = broofa()
crypto uuid
uuid = crypto.randomUUID()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
math.random
crypto uuid

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 14 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:149.0) Gecko/20100101 Firefox/149.0

Browser/OS: Firefox 149 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
math.random	6039975.0 Ops/sec
crypto uuid	3879981.2 Ops/sec

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

LLMs can make mistakes. Check important info.

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

**What is being tested?**

The test compares two approaches to generating UUIDs (Universally Unique Identifiers): `Math.random()` and `crypto.randomUUID()`. The goal is to determine which method is faster.

**Options compared:**

There are two options being compared:

1. **`Math.random()`**: This method generates a pseudo-random number using the current time as a seed.
2. **`crypto.randomUUID()`**: This method uses a cryptographically secure pseudorandom number generator to generate a UUID.

**Pros and Cons of each approach:**

* `Math.random()`: Pros:
	+ Fast and lightweight
	+ Suitable for most use cases where high security is not required
* Cons:
	+ Not suitable for cryptographic purposes due to its pseudo-random nature
	+ May produce predictable sequences in certain environments (e.g., same machine, same time of day)
* `crypto.randomUUID()`: Pros:
	+ Cryptographically secure and suitable for applications requiring high security
	+ Generates a truly random UUID with a low chance of predictability
* Cons:
	+ Slower than `Math.random()` due to the cryptographic algorithm used
	+ Requires additional dependencies (e.g., Node.js's `crypto` module)

**Library and purpose:**

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

**Special JS feature or syntax: None mentioned in this benchmark**

However, it's worth noting that both `Math.random()` and `crypto.randomUUID()` rely on JavaScript's internal algorithms for generating random numbers.

**Other alternatives:**

If you need to generate UUIDs frequently, you might also consider using external libraries like `uuid` (a popular library for generating UUIDs) or `random-uuid`. These libraries can provide more control over the generation process and are often faster than relying on JavaScript's built-in methods.

Keep in mind that if high security is not a requirement, `Math.random()` may be sufficient. However, if you need to generate secure UUIDs, `crypto.randomUUID()` is a better choice.

Related benchmarks:

Math random UUID vs crypto UUID (version: 0)

Comparing performance of: math.random vs crypto uuid

Created: 3 years ago by: Guest

Jump to the latest result

math.random

crypto uuid

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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