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Hello Guys, We can easily connect the Nodejs with xampp by follow simple steps - Nodejs required a specfic port to run on system and defaluts port is 8080, So let's starts
Thanks CommentsAdd new commentNode.js and MySQL are some of the necessary binding needed for any web application. MySQL is one of the most popular open-source databases in the world and efficient as well. Almost every popular programming language like Java and PHP provides drivers to access and perform operations with MySQL. In this Node js and MySQL
tutorial, we are going to learn how to connect Node js server with MySQL database. We will also learn how to pool connections to improve performance, query the tables, and call stored procedures. To be able to follow up with the code examples in this Node.js and MySQL tutorial, you should have MySQL installed on your computer. You can download a free MySQL database at
https://www.mysql.com/downloads/. Assuming you have Node and MySQL installed on your computer. Let’s quickly use MySQL in Node in three easy steps: Create a new directory and initialize a Node project using the NPM. $ mkdir mysqlexperiment && cd mysqlexperiment Install the mysql node module using the NPM. Create an app.js file and copy/paste the code shown below. Change the MySQL credentials accordingly with your system. const mysql = require('mysql'); connection.connect((err) => { Run the code using the following command. Observe the ‘Connected to MySQL Server!’ message in the terminal. If you have the latest MySQL server installed, you might end up getting an error saying the
following. { To tackle this issue, create a new user in your MySQL server with ‘mysql_native_password’ authentication mechanisum. Here is how you can do it quickly. First, log in to the MySQL server using root access. Then run these commands one by one. CREATE USER 'newuser'@'localhost' IDENTIFIED WITH 'mysql_native_password' BY 'newpassword'; In the code, pass the new credentials to connect to the MySQL server. Let’s proceed further. Pooling MySQL ConnectionsThe code shown earlier is not meant for production use. It’s merely to get you started with Node and MySQL. In a production scenario, we must use connection pooling to improve the performance of MySQL and not overload the MySQL server with too many connections. Let’s explain it with a simple example. Consider the code shown below. const express = require("express"); const connection = mysql.createConnection({ connection.connect((err) => {
app.get("/",(req,res) => { app.listen(3000, () => { We are integrating express module to create a web server. Install the module using the following command. npm install --save express We are creating a MySQL connection on every request coming from the user. Soon after getting multiple concurrent requests, the MySQL server will get overloaded and throw an error. To simulate the concurrent connection scenario, we are going to use a tool called siege. Use this command to install it in Ubuntu system. sudo apt-get install siege Run our Node server. Let’s simulate the concurrent requests. siege -c10 -t1M http://localhost:3000 Assuming you are running the Node server on Port 3000. Here is the output. As you can see from the output above, our server crashed while handling concurrent requests. To tackle this scenario, we use the Pooling mechanism.
Let’s rewrite our code to support connection pooling. const express = require("express"); const pool = mysql.createPool({ app.get("/",(req,res) => { app.listen(3000, () => { Run the app using the following command. Let’s fire up 10 concurrent users for 1 minute using siege by using this command. siege -c10 -t1M http://localhost:3000 Here is the output. Our server is effectively handling multiple requests with ease. I have used this approach in multiple production software solutions with heavy payload and it works like charm. Let’s learn how to execute various MySQL queries using Node. Executing QueriesLet’s learn how to execute queries using Node.js. Inserting Rows into TableHere is the code to add new rows to the table. const mysql = require('mysql'); const pool = mysql.createPool({ // add rows in the table function addRow(data) { // timeout just to avoid firing query before connection happens setTimeout(() => { The mysql.format function will perform the query escape. Querying data in TableHere is the code to query rows in the table. const mysql = require('mysql');
const pool = mysql.createPool({ // query rows in the table function queryRow(userName) { // timeout just to avoid firing query before connection happens setTimeout(() => { If you would like to add multiple rows in a single query, you can pass an array in the values. Like this. let insertQuery = 'INSERT INTO ?? (??,??) VALUES (?,?)'; Updating data in TableHere is the code to update the data in the table. const mysql = require('mysql'); const
pool = mysql.createPool({ // update rows function updateRow(data) { // timeout just to avoid firing query before connection happens setTimeout(() => { Deleting Rows in the tableHere is the code to delete a row from the table. const mysql = require('mysql'); const pool = mysql.createPool({ function deleteRow(userName) { // timeout just to avoid firing query before connection happens setTimeout(() => { Calling MySQL Stored Procedure Using NodeYou can also call a stored procedure using Node.js. If you don’t have stored procedures created in MySQL, you can refer to the code below to do the same. DELIMITER $$ CREATE PROCEDURE `getAllTodo`() DELIMITER ; Here is the code to call the stored procedure from the code. const mysql = require('mysql'); const pool = mysql.createPool({ function callSP(spName) { // timeout just to avoid firing query before connection happens setTimeout(() => { Conclusion :MySQL is one of the widely used database engines in the world and with Node it really works very well. Node MySQL pooling and event-based debugging are really powerful and easy to code. Further reading:
Can I use XAMPP MySQL in node JS?Run command : node -v and npm -v it gives node version ,If it shows then you installed the node successfully. Now Install Xampp (If not installed )download. html, and run Apache , If no error on, then we are almost done. after run this command you will see "http server started" appear on command prompt.
How do I connect to a node js in MySQL?Install MySQL Driver. C:\Users\Your Name>npm install mysql.. var mysql = require('mysql');. Run "demo_db_connection.js" C:\Users\Your Name>node demo_db_connection.js.. Connected!. con. connect(function(err) { if (err) throw err; console. log("Connected!" ); con. query(sql, function (err, result) { if (err) throw err;. How connect MySQL to XAMPP?Create MySQL Database at the Localhost
Open your browser and go to localhost/PHPMyAdmin or click “Admin” in XAMPP UI. Now click Edit privileges and go to Change Admin password, type your password there and save it. Remember this password as it will be used to connect to your Database.
Can I use PHPMyAdmin with NodeJs?To interoperate with MySQL (in our case, we are using Xampp which includes PHPMyAdmin) using Node. js, you'll need the following node package named mysql. Then you'll be able to require the mysql module. Note: this module is exception safe.
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