Node.js Express Application Hanging on Large JSON Responses with Compression Middleware
I'm having a hard time understanding I'm working on a project and hit a roadblock. I'm working with a question with my Node.js Express application that seems to hang when trying to respond with large JSON objects. I'm using `compression` middleware for gzip compression to optimize the responses, but when the payload exceeds a certain size (around 2MB), it starts to delay significantly or even hangs. My setup is as follows: ```javascript const express = require('express'); const compression = require('compression'); const app = express(); app.use(compression()); app.get('/data', (req, res) => { const largeData = generateLargeJSON(); // This function returns a large JSON object res.json(largeData); }); function generateLargeJSON() { // Logic to create a large JSON object, around 2MB in size return { data: new Array(2000000).fill({ key: 'value' }); } app.listen(3000, () => { console.log('Server is running on port 3000'); }); ``` While testing the endpoint using Postman, I noticed that the response time can go up to 30 seconds, and sometimes I get a timeout behavior. I've tried increasing the default timeout settings for both Express and Postman, but that doesn't seem to help. Additionally, I have confirmed that my server has adequate resources (4GB RAM, Node.js v14.17.6) and that the scenario occurs both locally and in production. I also tried using `response.send()` instead of `response.json()` to see if that made a difference, but the behavior remains the same. Is there a better way to handle large JSON responses in a Node.js application, or is there a specific configuration I should adjust when using compression middleware? Any help on optimizing this would be greatly appreciated! My development environment is Ubuntu 20.04. Any feedback is welcome! This issue appeared after updating to Javascript LTS.