Benchmark: Unique ID - UUID vs. String Concat

HTML Preparation code:

<script type="module">
  import { v4 as uuidv4 } from 'https://jspm.dev/uuid';
  
  window.uuidv4 = uuidv4;
</script>

Tests:

UUID Every Time
for (let i = 0; i < 1000; ++i) { const uuid = uuidv4(); }
Integer and a Single UUID
const uuid = uuidv4(); for (let i = 0; i < 1000; ++i) { const uniqueId = uuid + '_' + i; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
UUID Every Time
Integer and a Single UUID

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark.

**Overview**

The provided JSON represents a benchmark that compares two approaches to generate unique identifiers:

1. **UUID (Universally Unique Identifier) every time**: This approach uses the `uuidv4` library to generate a new, unique identifier for each iteration of the loop.
2. **Integer and a single UUID**: This approach uses a combination of an incrementing integer and a single, shared UUID.

**What is being tested?**

The benchmark aims to determine whether generating a truly unique identifier (`uuidv4`) every time is beneficial or if using a single, shared identifier with an increasing integer is sufficient. The goal is to understand the performance impact of each approach on the system.

**Options compared**

The two options being compared are:

1. **UUID (Universally Unique Identifier) every time**: This approach uses the `uuidv4` library to generate a new, unique identifier for each iteration.
2. **Integer and a single UUID**: This approach combines an incrementing integer with a shared UUID.

**Pros and Cons of each approach:**

1. **UUID (Universally Unique Identifier) every time**:
	* Pros: Guarantees uniqueness for each identifier, which may be beneficial in certain use cases.
	* Cons: May result in slower performance due to the overhead of generating a new UUID for each iteration.
2. **Integer and a single UUID**:
	* Pros: Can lead to faster performance since only one UUID needs to be generated upfront.
	* Cons: There's a risk of collisions (duplicate identifiers) if the incrementing integer isn't properly managed.

**Library and its purpose**

The `uuidv4` library is used in this benchmark. It generates a random, unique identifier based on the Unix epoch time and a pseudorandom number generator. The library provides a simple way to generate UUIDs for various use cases, such as tracking user activities or identifying unique records.

**Special JS feature or syntax**

This benchmark doesn't explicitly use any special JavaScript features or syntax that would affect its performance or behavior. However, it does rely on the `import` statement with a URL to load the `uuidv4` library, which is a modern JavaScript feature supported by most browsers.

**Other alternatives**

If you're looking for alternative approaches to generate unique identifiers, consider:

1. **`crypto.randomBytes()`**: Generates cryptographically secure random bytes that can be used as UUIDs.
2. **`Date.now()`**: Uses the current timestamp to create unique identifiers, although this may not be suitable for all use cases (e.g., high-traffic systems).
3. **Custom implementation**: Creating your own UUID generator using a combination of hash functions and pseudorandom number generators.

Keep in mind that each alternative has its pros and cons, and you should choose the approach that best suits your specific requirements and performance needs.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36

Browser/OS: Chrome 112 on Windows

View result in a separate tab

Test name	Executions per second
UUID Every Time	1029.8 Ops/sec
Integer and a Single UUID	400545.0 Ops/sec

Related benchmarks:

Unique ID - UUID vs. String Concat (version: 1)

I am testing if we need a truly unique identifier for each activity vs. a single unique identifier, with an increasing integer.

Comparing performance of: UUID Every Time vs Integer and a Single UUID

Created: 2 years ago by: Registered User

Jump to the latest result

UUID Every Time

Integer and a Single UUID

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):