Performance Issues with Asynchronous File Processing in Node.js with Streams
I need help solving I recently switched to Hey everyone, I'm running into an issue that's driving me crazy. I tried several approaches but none seem to work... Could someone explain I'm working on a Node.js application that processes large CSV files asynchronously using streams. While the initial implementation was straightforward, I've started noticing significant performance bottlenecks when handling files larger than 100MB. The processing time seems to increase exponentially, and I often see the following warning in my logs: `MaxListenersExceededWarning: Possible EventEmitter memory leak detected`. I have set up my file reading and processing logic as follows: ```javascript const fs = require('fs'); const { Transform } = require('stream'); const readStream = fs.createReadStream('largeFile.csv'); const transformStream = new Transform({ transform(chunk, encoding, callback) { // Simulate some processing on each chunk const processedData = chunk.toString().toUpperCase(); callback(null, processedData); } }); readStream.pipe(transformStream).on('data', (data) => { console.log(data.toString()); }); ``` I've tried increasing the highWaterMark option for the read stream to allow more data to be buffered, but it doesn't seem to help much with the overall performance. Additionally, I'm using the latest Node.js version (v18.x), and I noticed that memory usage spikes during the processing, sometimes reaching above 1GB. I've also considered using `async/await` within the transform function to manage backpressure, but that seems counterintuitive since it's already a stream. How can I optimize this file processing to handle larger files more efficiently? Are there any best practices for managing memory and performance in such scenarios? For reference, this is a production REST API. Any help would be greatly appreciated! For reference, this is a production mobile app. Thanks in advance! I'm working in a Windows 10 environment. Could someone point me to the right documentation? Has anyone else encountered this?