Dealing with MySQL Connection Errors During Third-Party API Integration
I'm optimizing some code but I've tried everything I can think of but Could someone explain I'm relatively new to this, so bear with me..... Recently started working with a third-party API that requires frequent database lookups to validate incoming data. The application is built using Node.js with Express and MySQL as the database. After integrating the API, I noticed that the application occasionally throws connection errors when attempting to query the database. Here’s a snippet of my connection setup: ```javascript const mysql = require('mysql2'); const connection = mysql.createConnection({ host: 'localhost', user: 'root', password: 'password', database: 'app_db' }); connection.connect((err) => { if (err) throw err; console.log('Connected to MySQL!'); }); ``` The API sends a large volume of requests at times, and I suspect that the database connections might be getting overwhelmed, leading to intermittent failures with messages like `ER_ACCESS_DENIED_ERROR` and `ECONNREFUSED`. I’ve tried implementing connection pooling like this: ```javascript const pool = mysql.createPool({ connectionLimit: 10, host: 'localhost', user: 'root', password: 'password', database: 'app_db' }); pool.getConnection((err, conn) => { if (err) { console.error('Could not get a connection from the pool:', err); return; } // Use the connection conn.query('SELECT * FROM users', (error, results) => { conn.release(); // Release the connection back to the pool if (error) return console.error(error); console.log(results); }); }); ``` Despite this, the connection errors still occur sporadically. Monitoring the server load, I see spikes that correlate with the API calls. Is there a recommended best practice for managing MySQL connections under high load conditions? Should I consider increasing the `connectionLimit`, or could there be a more efficient way to handle database requests in this context? Also, are there any tools or libraries that can help in optimizing connections dynamically based on the load? Any insights would be greatly appreciated. Am I missing something obvious? I'm working with Javascript in a Docker container on Windows 11. I'd really appreciate any guidance on this. I recently upgraded to Javascript 3.11. Thanks for taking the time to read this! I'm working with Javascript in a Docker container on macOS. Could someone point me to the right documentation? I'm working on a mobile app that needs to handle this. I'd be grateful for any help.