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Active/active replication in PostgreSQL enhances both high availability and load balancing. This advanced setup uses the Bi-Directional Replication (BDR) plugin to synchronize multiple database servers. Here’s how to set it up. Setting Up Active/Active Replication Step 1: Prepare the Servers Ensure you have at least two servers with PostgreSQL installed. Both servers must run the … Read more
When you’re working with PostgreSQL, one of the first things you’ll need to know is how to view the tables in your database. Tables are where your data lives, so understanding how to list them is pretty important. Whether you’re using the command line or a tool like pgAdmin, PostgreSQL gives you several ways to … Read more
This guide explains how to restart the SSH service in Solaris 10 and Solaris 11. These steps will help ensure the SSH service is up and running smoothly. If you’re looking for SSH restart commands for other Linux distributions, here’s a quick reference table: Linux Distribution Init System Command to Restart SSH Ubuntu 16.04 and … Read more
Write Ahead Logging (WAL) is a pivotal component of PostgreSQL. The principle of WAL is straightforward yet profound: every action that modifies the database content is recorded into a log before it’s applied to the database. This action-first, record-later methodology improves the durability and consistency of the database by providing an audit trail, which becomes … Read more
Replication—the act of duplicating data across multiple database servers— is a cornerstone feature in PostgreSQL. It facilitates high availability, enhances read scalability, and provides a means for data distribution. PostgreSQL mainly supports two replication types: physical and logical replication. Let’s dive deeper into the world of PostgreSQL replication and unravel the difference between these replication … Read more
In this tutorial, we will show you how to setup a MariaDB Clustering using Galera on Ubuntu. In addition to these easy install instructions, we’ll explain what is MariaDB clustering, how does cluster work, and how to enable clustering in MariaDB on Ubuntu. MariaDB is a popular open-source database management system that offers high performance, … Read more
Shell script arguments are a powerful way to make your scripts flexible, reusable, and interactive. These arguments allow you to pass data or instructions directly to the script from the command line, eliminating the need for hardcoding values or relying on user prompts during execution. One of the main advantages of using arguments is automation. … Read more
Imagine PostgreSQL performance logging as your database’s personal journal. It’s your go-to for capturing all the important stuff, especially when you switch it on. This gives you a clear picture of what’s happening in your database world, helping you spot those pesky slow queries that can drag down efficiency. Why care? Because finding and fixing … Read more
PostgreSQL is a rock-solid, open-source database system that’s a favorite among developers. If you’re working on Ubuntu, knowing how to start and manage the PostgreSQL server is a must for keeping your projects on track. This guide will walk you through everything you need to know, from starting the server to troubleshooting common issues. By … Read more
This article will explain what is a Java memory leak and suggest tools for detection. Memory leaks can cause a Java program to run slowly or crash altogether. Detecting memory leaks in Java can be a challenging task, especially if you don’t have the right tools and techniques at your disposal. In this blog post, … Read more
You will learn how to manage dependencies during RPM installation on Linux servers such as CentOS, RHEL, Fedora, and Ubuntu. We’ll provide step-by-step instructions on how to properly handle dependency issues and solve common issues. Whether you build your own RPM or use third-party, we’ll cover it in this guide. About RPM and Dependencies Each … Read more
Ubuntu is designed around DEB packages and the APT package manager, but certain enterprise applications and vendor software require RPM packages. If you’re working in a mixed Linux environment or need to build RPMs from source on Ubuntu, this guide will walk you through installing rpmbuild, setting up dependencies, and successfully creating an RPM package … Read more
Introduction to Cassandra Compaction Strategies In Apache Cassandra, compaction is one of the most critical processes for maintaining database performance and efficiency. It’s the system’s way of merging and reorganizing SSTables (Sorted String Tables) to reduce redundancy, optimize disk space usage, and ensure fast read and write operations. Without proper compaction, the database could suffer … Read more
Apache Cassandra is a super powerful NoSQL database that’s designed to handle massive amounts of data spread across multiple servers. It’s the go-to choice for many modern applications that need high scalability and performance. But here’s the deal: to truly unlock Cassandra’s potential, you need to nail the data modeling part. Unlike traditional databases, Cassandra … Read more
Enhancing Cassandra’s read performance reduces latency and improves efficiency. Before exploring optimization strategies, let’s first examine how Cassandra performs with reads versus writes and typical latency expectations. Is Cassandra Read or Write Optimized? Cassandra is primarily write-optimized. Its architecture excels at handling high write throughput while ensuring durability and scalability. Data is distributed across nodes … Read more
Apache Kafka is a popular choice for handling large volumes of data in real-time. By default, Kafka keeps data for seven days. This is controlled by the log.retention.hours setting, which is set to 168 hours (7 days x 24 hours). While this works for many use cases, you might need to retain data for longer … Read more
This article will explore focus on how to PostgreSQL reset statistics using the pg_stat_reset command. We will discuss what this command does, when and why to use it, and the impact it has on your PostgreSQL database. Efficiency is important, so check out this article on how to reload config using pg_ctl without restarting the … Read more
This file controls client authentication, and its modifications won’t take effect until you reload pg_hba.conf. In this comprehensive guide, we’ll answer the top ten questions about reloading the pg_hba.conf file. What is the command to reload the pg_hba.conf file in PostgreSQL? The command to reload pg_hba.conf file in PostgreSQL is fairly simple. Use the following … Read more
In this post, we will explore what tombstones are, why they can negatively affect Cassandra performance, and how to avoid them. Apache Cassandra is a highly scalable and distributed NoSQL database that uses a unique data model designed to handle large amounts of data across many commodity servers, with high availability and fault tolerance. However, … Read more
This article will get you started on creating a Laravel CI/CD pipeline in Jenkins. There are tremendous productivity gains to implement CI/CD in Laravel. In case you missed it, be sure to read our post on setting up Laravel project in MacOS Docker. Step 1: Install Jenkins Before we can start building Laravel projects in … Read more
Code coverage measures how much of your code is tested by automated tests. It helps you understand how well your tests cover the application. SonarQube, a popular open-source tool, makes it easy to track code coverage and maintain high-quality code. For more details, refer to the official SonarQube documentation. This guide explains how to set … Read more
The Java Collections Framework is a core part of Java that helps developers manage and manipulate groups of objects efficiently. If you’ve ever needed to store key-value pairs, you’ve likely come across HashMap and Hashtable. These two structures are often compared, and knowing their differences can help you write better, more efficient code. This article … Read more
Looking for a new phone? Google’s Pixel 7 and Pixel 7 Pro stand out as two of the top choices. With premium hardware and Google’s signature software, both devices promise an excellent experience. But how do they differ, and which one is the better fit for you? In this guide, we’ll compare their key features … Read more
If you’re a Laravel developer using macOS Ventura, setting up Docker can make your workflow smoother, more portable, and consistent. Docker provides a containerized environment that eliminates “it works on my machine” issues and makes sharing your development setup simple. This guide walks you through setting up Laravel on Docker, with clear instructions and compatible … Read more
We’ve all been there—stuck with a PDF that needs some serious editing, but you can’t make changes without jumping through hoops. That’s where a free PDF to Word converter saves the day. These tools turn those locked-up PDFs into editable Word documents, so you can tweak and update without the frustration. The best part? You … Read more