What is TTL in Node.js caching?

What is TTL in Node.js caching?

TTL stands for Time To Live. It's a setting that determines how long a cached item should remain valid before it expires.

How do I implement TTL in my Node.js application?

You can use libraries like node-cache or redis to set TTL for your cached data. For example, with node-cache, you can set a TTL when you store an item.

Can you show me a code example?

Sure! Here's a simple example using node-cache:

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

// Set a value with a TTL of 100 seconds
myCache.set('key', 'value', 100);

What happens when the TTL expires?

When the TTL expires, the cached item is automatically removed from the cache, and any attempt to access it will return undefined.