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Showing posts from July, 2022

Building web app using Firebase - Part 2 (Create API and Read Write DB)

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Our First Web App Using Firebase Continuing from the previous post, which is only just one time only setup, let's further advance on doing the codes. After the Realtime database is ready and you have created a document, we need to develop the code. Just create a typical Node-js project as described below: Write our first Firebase function After you created the document you followed from the previous post, you already have the read and write API to your document. For example, you will be able to read your "user_detail" document using HTTP GET Request to "https://[PROJECT_ID].firebaseio.com/user_detail.json" . More on using Rest API can be read here https://firebase.google.com/docs/reference/rest/database . Although Firebase RealtimeDB has its Rest API implementations, sometimes, When we need some underlying logic for our app, we need to create an API. But here's just an example of how to create a simple API using firebase functions. 1. On your project, initia...
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Building web app using Firebase - Part 1 (Create Firebase Project)

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Google Firebase In the following example, We will develop the most efficient way to build a website. Unfortunately, people tend to over-engineer a website by using more and more tech stacks; yes, it will boost productivity later, but sure, the learning curve if you are not familiar with the stack; it just drains your energy and wastes your remaining precious time living on this planet Earth (which you only have once), which is very beautiful to explore rather than if you are just sitting there doing something about human-invented technology. The solution is Firebase; this gonna be a cheat sheet for whenever you want to start building a new project or if you are just a beginner using Google firebase. This will guide you through creating a website from scratch. No server setup required; no dev-ops skills needed, with NoSQL database to not be bothered by the SQL and its slowness and many problems with locking, foreign keys, maximum column size, and so on. Let’s just start building a w...
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ERROR 1348 Column Password Is Not Updatable When Updating MySQL Root Password

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MySQL and MariaDB password As already mentioned in the title of this blog, this error message sometimes occurred when we are trying to update our root password database, either MySQL or MariaDB, The error says: ERROR 1348 (HY000): Column 'Password' is not updatable This is because if we use this SQL command to update our database root password, and it turn out to be Restricted by MySQL to use update on mysql database. UPDATE mysql.user SET Password=PASSWORD('1234') WHERE User='root'; The solutions for MySQL Error1348 So you can not update a user password using Update commands, to update the password, use ALTER commands instead. like the following. ALTER USER 'root'@'localhost' IDENTIFIED BY '1234'; And then you need to do the flush privileges to commit previous queries (that alter command above) into the system, simply do like this. flush privileges; So now you have your root with password 1234. Although it is recommended to...
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How To Create Spring Boot Project Using Netbeans

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Spring Boot is a handy tool that simplifies the development of Spring Framework applications by reducing the need for cumbersome configuration. In this tutorial, I'll guide you through creating a Spring Boot application using the Netbeans IDE. While you can certainly create a Spring Boot application in Netbeans manually, it's much easier with a plugin designed for Spring development. Here's a step-by-step guide to get you started: 1. Install the Spring Boot Plugin: Open Netbeans and navigate to the Tools menu. Click on "Plugins." Once the Plugins window opens, select the "Available Plugins" tab. Look for the "Nb SpringBoot" plugin, then install and activate it. 2. Create a New Spring Boot Project: After restarting Netbeans IDE, you can create a new project with Spring Boot. Go to File > New Project. Under Categories, select Maven, then choose "Spring Boot Basic." 3. Add Dependencies: With your new project created, open the po...
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Spring Kafka - How to use ReplyingKafkaTemplate send and reply synchronously

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Microservice Spring with Apache Kafka Today, I want to share how to use Kafka. It's quite interesting once you get the hang of it, and I hope my explanation will make it a bit easier for you. So, Kafka is primarily known as an asynchronous messaging queuing system. This means it allows different parts of your application to communicate with each other without waiting for immediate responses. However, there are times when you might need a more immediate reply from another service in your project. Luckily, Kafka can handle this too. Here’s how it works: The client side sends a message to the server side via Kafka. This message includes a special identifier in the Kafka header request, known as KafkaHeaders.CORRELATION_ID, along with a topic where the server should respond. The server, after processing the request, sends a message back to the same topic with the same correlation ID. This way, the client knows that the message is a response to its initial request and can act accordingl...
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