Alright, let's break it down!
๐ฅ Caching is like stuffing your damn fridge with leftovers ๐ so you don't have to hit up the store every time youโre hungry ๐โโ๏ธ๐จ. When your server has to serve the same info a hundred times over, instead of working it to death, we slap that data into cache storage. Boomโyour site loads faster, and you're the hero of the day ๐๐
Now, how the hell do we pull this off in code? ๐ป Say youโre using React, and youโve got some user data you want to keep handy without spamming the API every time. Hereโs how you set it up with a simple cache:
const fetchUserData = async () => {
if (localStorage.getItem('userData')) {
return JSON.parse(localStorage.getItem('userData'));
}
const response = await fetch('/api/user');
const data = await response.json();
localStorage.setItem('userData', JSON.stringify(data));
return data;
};
And hereโs the kickerโcache has to stay fresh ๐๐จ. You donโt want outdated junk piling up. Use a timer with setTimeout or Cache-Control headers so it auto-clears and refreshes. Keeps your server breathing, and your users arenโt stuck in the stone age ๐ฅ๐ผ
Happy codding โค
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