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PHP File Upload Tutorial Automatically Organize Images and PDFs by Folder Date

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Here's a complete tutorial in English to create a PHP application that uploads image or PDF files and automatically organizes them into folders based on the year, month, and date. Requirements     PHP 7.4 or higher installed.     A web server like Apache or Nginx.     Basic knowledge of PHP and HTML. Step-by-Step Tutorial 1. Setting Up the Project Create a folder for your project, e.g., file_upload_project, and ensure it is accessible through your web server. Inside the folder, create the following files and directories:     index.php (for the upload form and processing logic)     uploads/ (this is where uploaded files will be stored; ensure it is writable) 2. Create the HTML Upload Form <!-- index.php --> <!DOCTYPE html> <html lang="en"> <head>     <meta charset="UTF-8">     <meta name="viewport" content="width=device-width, initial-scale=1.0"> ...

Complete Tutorial Installing Java Desktop and NetBeans on macOS

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This guide will walk you through the installation of Java (JDK) and NetBeans on macOS, step by step. Follow these instructions carefully to get your development environment up and running.   Step 1: Install the Java Development Kit (JDK)     Download the JDK:         Visit the official Oracle Java SE Downloads page.         Select the latest JDK version and download the macOS installer (.dmg file).     Install the JDK:         Open the downloaded .dmg file.         Double-click the .pkg file to launch the installer.         Follow the on-screen instructions to complete the installation.     Verify the Installation:         Open the Terminal application (you can find it via Spotlight Search by pressing Cmd + Space and typing Termina...

Getting Started with AWS A Beginners Guide to Cloud Infrastructure

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Amazon Web Services (AWS) is one of the most popular and widely used cloud platforms globally. It provides a variety of cloud services, such as computing power, storage options, and tools for building and scaling applications. In this guide, you will learn the basics of AWS, how to set up your account, and the steps to deploy a simple cloud infrastructure. This tutorial is perfect for beginners who are new to AWS or cloud computing. What You’ll Learn     How to create an AWS account.     Navigating the AWS Management Console.     Launching your first EC2 instance (virtual server).     Setting up S3 for object storage.     Monitoring your infrastructure using CloudWatch. Step 1: Create an AWS Account     Go to the AWS Website     Visit https://aws.amazon.com/ and click on " Create an AWS Account ."     Fill Out Your Details         Pr...

Combine PostgreSQL with AWS Lambda for Real-Time APIs

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We will create a real-time API using PostgreSQL as the database and AWS Lambda as the serverless compute service. By the end of this guide, you'll have a fully functional API that interacts with PostgreSQL through AWS Lambda. Prerequisites Before starting, ensure you have the following ready:     AWS Account: Sign up at AWS if you don’t have an account.     Basic Knowledge of AWS Lambda and PostgreSQL.     PostgreSQL Database: You can use a local database or an Amazon RDS instance.     Node.js Installed: For setting up Lambda functions (or another runtime like Python if preferred).     AWS CLI: Installed and configured with your credentials.     Serverless Framework (Optional): To simplify Lambda deployments. Steps to Build the Real-Time API   1. Set Up Your PostgreSQL Database If you don’t already have a PostgreSQL database, follow these steps:     Option 1: Local PostgreSQL In...

How to Perform ETL Processes with AWS Glue and Snowflake

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AWS Glue and Snowflake are powerful tools for executing ETL (Extract, Transform, Load) processes in a scalable and efficient way. This tutorial will guide you through the steps to extract data, transform it, and load it into Snowflake using AWS Glue. Prerequisites Before getting started, ensure you have: AWS Account: Access to AWS Glue and S3. Snowflake Account: A Snowflake instance with proper roles and permissions. Data Source: A data source to extract data from (e.g., a relational database, S3, or streaming service). IAM Role: An IAM role in AWS with permissions to access S3, Glue, and Snowflake. Step 1: Extract Data Define Data Source Identify the source from which data will be extracted. Common sources include: Relational Databases: Use AWS Glue JDBC connectors for databases like MySQL, PostgreSQL, or Oracle. Files on S3: Extract data directly from CSV, JSON, or Parquet files stored in an S3 bucket. AWS Glue Data Catalog Register your data source in the AWS Glue Data Catalog: Navi...

How to Optimize GraphQL Resolvers for Cloud Databases

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Optimizing GraphQL resolvers is crucial when working with cloud databases to ensure efficient data retrieval, reduced latency, and cost-effective operations. This tutorial provides a step-by-step guide to enhance the performance of GraphQL resolvers in your cloud database setup. 1. Understand the N+1 Problem The N+1 problem occurs when a resolver queries the database repeatedly for each item in a list, leading to multiple redundant database calls. For example: query {   users {     id     posts {       title     }   } } If not optimized, this query can result in one call to fetch users and one call per user to fetch posts. Solution: Use Data Loaders: Implement a batching mechanism to combine multiple queries into a single database call. const DataLoader = require('dataloader'); const postsLoader = new DataLoader(async (userIds) => {   const posts = await db.query('SELECT * FROM posts WHERE userId IN ...

How to Use AWS RDS Read Replicas for Scalable Database Applications

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Amazon Relational Database Service (RDS) is a fully managed database service that simplifies setting up, operating, and scaling relational databases. Read Replicas in RDS allow you to horizontally scale read-heavy database workloads by offloading read queries to replicas, improving performance and availability. This tutorial will guide you through setting up and using RDS Read Replicas for scalable database applications. Prerequisites Before getting started, ensure the following: AWS Account: An active AWS account with permissions to manage RDS resources. RDS Instance: A primary RDS database instance already set up. AWS CLI: Installed and configured for your AWS account. Database Client: Access to a client like MySQL Workbench, pgAdmin, or a command-line client for database interaction. Step 1: Verify Primary Database Configuration Log in to the AWS Management Console and navigate to the RDS dashboard. Select your existing RDS instance. Ensure the following: The database engine support...