Processing a 2GB CSV in Node Without Running Out of Memory

<p>The code that processes a CSV in your tests looks reasonable. Read the file, parse the rows, aggregate the numbers. It passes review, it ships, and it runs fine for months.

<p><strong>Your API hands out 50 records at a time across 400 pages. You need all of them. You do not need them all at once.</strong></p> <p>Here's a very familiar situation that

<h2> The problem </h2> <p>Imagine we develop a SaaS platform that analyzes users' activity data - think fraud detection, behavioral analytics, compliance reporting. Our task is to

<p>CSV files are the cockroach of software engineering: unstandardized, fragile, lacking embedded metadata, yet universally relied upon. </p> <p>Every data analyst or engineer has