How to create a re-usable caching method while using node-cache?

@lew 

To create a re-usable caching method while using node-cache in Node.js, you can create a utility module that encapsulates the functionality of caching data and retrieving it using the node-cache module. Here is an example of how you can achieve this:

1. Install node-cache module: First, you need to install the node-cache module by running the following command in your terminal:

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npm install node-cache

1. Create a caching utility module: Next, create a new file named cache.js or whatever name you prefer, and add the following code to create a caching utility module:

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const NodeCache = require('node-cache');
const cache = new NodeCache();

module.exports = {
  get: (key) => {
    return cache.get(key);
  },
  
  set: (key, value, ttl) => {
    cache.set(key, value, ttl);
  },
  
  del: (key) => {
    cache.del(key);
  }
};

In this module, we have created three functions - get, set, and del to interact with the cache. The get function retrieves the value stored in the cache with the given key, set function sets a new value in the cache with the given key and time-to-live (ttl), and del function deletes the value stored in the cache with the given key.

1. Use the caching utility module in your application: Now you can use the caching utility module in your application to cache data. Here's an example of how you can use it:

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const cache = require('./cache');

// Set a value in the cache with the key 'myKey' and TTL of 60 seconds
cache.set('myKey', 'myValue', 60);

// Retrieve the value stored in the cache with the key 'myKey'
const cachedValue = cache.get('myKey');
console.log(cachedValue);

// Delete the value stored in the cache with the key 'myKey'
cache.del('myKey');

By following these steps, you can easily create a re-usable caching method using node-cache in Node.js. This will help you to efficiently cache data in your application and improve its performance.