We Will Process Only Last 1000 Files They Said

We Will Process Only Last 1000 Files They Said
php-memes, database-memes, performance-memes, big-o-notation-memes, server-meltdown-memes | ProgrammerHumor.io

When your manager says "just process the last 1000 files" but you're dealing with a PHP script that's about to iterate through 2 million files while comparing against a database of 1 million records. The script is literally pulling 1000 records with limit(1000) but then checking EACH of your 2 million files against those 1000 records with in_array().

That's a cool O(n²) operation that's going to take approximately checks notes forever to complete. Your server's CPU is already writing its resignation letter.

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