Node.js v8.cachedDataVersionTag() Method

The v8.cachedDataVersionTag() method is an inbuilt application programming interface of the v8 module which is used to get the version tag derived from the v8 version.

Syntax:

v8.cachedDataVersionTag();

Parameters: This method does not have any parameters.

Return Value: This method returns the version tag from the v8 version, command-line flags, and detected CPU features.

Example 1: The below example illustrates the use of the v8.cachedDataVersionTag() method in Node.js.

index.js 

// Accessing v8 module
const v8 = require('v8');

// Calling v8.cachedDataVersionTag() 
tag = v8.cachedDataVersionTag();
console.log("cache data version tag is " + tag);

Run the index.js file using the following command:

node index.js

Output:

cache data version tag is 4151506697

Example 2: The below example illustrates the use of the v8.cachedDataVersionTag() method in Node.js.

index.js 

// Accessing v8 module
const v8 = require('v8');

// User defined function
function getTagVersion() {

    // Initializing with zero
    let tagVersion = 0;

    // Calling v8.cachedDataVersionTag()
    tagVersion = v8.cachedDataVersionTag();

    return tagVersion;
}

// Function call
let result = getTagVersion();

// Printing Tag version
console.log("The Cache Data Version is:", result);

Run the index.js file using the following command:

node index.js

Output:

The Cache Data Version is: 1165837633

Reference: https://nodejs.org/api/v8.html#v8_v8_cacheddataversiontag