Benchmark: Local storage cahce

Script Preparation code:

localStorage.setItem("hello", "hello");
localStorage.setItem("hi", "hi");
localStorage.setItem("bye", "bye");

Tests:

cahce
const storage = localStorage; storage.setItem("hello", "hello"); storage.setItem("hi", "hi"); storage.setItem("bye", "bye");
no cache
localStorage.setItem("hello", "hello"); localStorage.setItem("hi", "hi"); localStorage.setItem("bye", "bye")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
cahce
no cache

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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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.

**Benchmark Overview**

The benchmark compares the performance of two approaches for accessing local storage in JavaScript:

1. **Using `localStorage` as a variable (`const storage = localStorage;`)**
2. **Directly calling `localStorage.setItem()` without assigning to a variable**

**Options Compared**

The two options are compared in terms of their execution speed.

* Option 1: Assigns the `localStorage` object to a variable (`const storage = localStorage;`) and then uses this variable to set items.
* Option 2: Directly calls `localStorage.setItem()` without assigning to a variable.

**Pros and Cons**

**Option 1 (using `localStorage` as a variable):**

Pros:

* Can be more readable and maintainable, especially for longer code paths or complex logic.
* Reduces the need for repeated calls to `localStorage.setItem()`.

Cons:

* May incur additional overhead due to variable creation and lookup.
* Might affect performance if the assignment is expensive or frequent.

**Option 2 (directly calling `localStorage.setItem()`:**

Pros:

* Can be faster, as it eliminates the overhead of variable creation and lookup.
* Reduces memory allocation and deallocation for each function call.

Cons:

* May make code harder to read and maintain, especially in complex scenarios.
* Increases the risk of typos or errors due to repeated calls.

**Library Used**

The benchmark uses the `localStorage` API, which is a built-in feature of web browsers. The purpose of `localStorage` is to store data that persists across page loads and can be accessed by multiple pages.

**Special JS Feature/Syntax (None)**

There are no special JavaScript features or syntax used in this benchmark. It only relies on standard JavaScript language constructs.

**Other Considerations**

When considering the performance implications of these options, it's essential to keep in mind:

* The browser's garbage collector and its frequency of runs.
* The size and complexity of the data being stored and retrieved.
* Any caching mechanisms implemented by the browser or web app.

**Alternative Approaches**

If you need to optimize local storage access in your JavaScript code, consider the following alternatives:

1. **Use a faster alternative:** Depending on your use case, you might be able to improve performance by using alternative data storage solutions like IndexedDB, WebSockets, or even server-side databases.
2. **Minimize repeated calls:** Instead of assigning `localStorage` to a variable and then calling `setItem()`, consider using a more efficient approach like caching the result of `localStorage.getItem()` for frequently accessed keys.
3. **Profile your code:** Use profiling tools or browser developer tools to identify performance bottlenecks in your local storage-related code paths.

Keep in mind that the specific optimizations will depend on your application's requirements and constraints.

Related benchmarks:

Local storage cahce (version: 0)

Comparing performance of: cahce vs no cache

Created: 7 years ago by: Guest

Jump to the latest result

cahce

no cache

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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