Author: marjavamitjava

In Java, you can check if the current system is running on a virtual machine (VM) by inspecting certain system properties or by checking for specific indicators in the environment. While there’s no direct...

To check whether the Docker daemon is running over TLS (port 2376) or without TLS on port 2375, you can make an attempt to connect to both ports and see which one is available....

This code snippet is a great approach to listen for Docker events, particularly the stop events, using the HttpClient in Java without relying on a Docker client library. The code makes use of the...

As of now (2024), here’s the current status of Bitcoin generation, the size of the blockchain, and number of transactions: 1. How Many Bitcoins Have Been Generated? 2. How Big is the Bitcoin Blockchain?...

The difficulty target in blockchain networks like Bitcoin is set automatically by the network protocol. It’s not set by any individual or central authority. Here’s how it works: 1. Automatic Difficulty Adjustment 2. How...

In blockchain mining, particularly for Proof of Work (PoW) blockchains like Bitcoin, the puzzles that miners solve are complex mathematical problems called cryptographic hash puzzles. These puzzles are not like traditional puzzles; they don’t...

Here’s a simple Java code example to detect clock skew by comparing your system’s current time with the time from an NTP server. Java Code to Detect Clock Skew Using an NTP Server You’ll...

Let’s walk through the scenario where you bought a domain from GoDaddy, host your website content on host.com, and map your domain to the website content. 1. You Buy a Domain from GoDaddy 2....

Character encoding issues are a common challenge when working with text data in software development. These issues often arise when data is read from or written to streams and files, especially when dealing with...

Introduction When working with Apache Solr, especially in applications with multiple collections, it’s common to create a new Solr client instance for each connection. While this may seem straightforward, it can lead to performance...