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Building a Chess Engine: From Position Evaluation to Search Techniques Chess engines are fascinating pieces of software that combine various computer science concepts: position evaluation, tree search, move generation, and optimization techniques. This guide will walk you through implementing a chess engine, with a particular focus on position evaluation and search strategies. Part 1: Basic Position Representation First, let’s implement a basic board representation. While FEN (Forsyth–Edwards Notation) is the standard for chess positions, we’ll use a more computation-friendly format internally. ...

Building a Secure JWT Issuer in Go: A Complete Guide JSON Web Tokens (JWT) have become the de facto standard for implementing stateless authentication in modern web applications. In this guide, we’ll implement a secure JWT issuer in Go, covering both basic implementation and advanced security considerations. Understanding JWT Basics A JWT consists of three parts: header, payload, and signature. These parts are Base64URL encoded and concatenated with dots. The signature ensures the token hasn’t been tampered with, while the payload carries the claims (data) we want to transmit securely. ...

A Beginner’s Guide and Optimization Techniques Graphs are fundamental data structures in computer science, representing relationships between entities. One of the most common problems involving graphs is finding the shortest path between nodes. Dijkstra’s algorithm is a classic solution to this problem for graphs with non-negative edge weights. In this guide, we’ll implement Dijkstra’s algorithm in Go and explore ways to optimize it using advanced data structures.\ Basic Implementation of Dijkstra’s Algorithm Let’s begin by understanding the core concept. Dijkstra’s algorithm maintains a set of nodes whose shortest distance from the source is known and repeatedly selects the node with the minimum distance to explore its neighbors. ...

Monitoring Clipboard in Golang: A Guide to Obscuring Passwords Introduction In this article, we explore creating a Go program that monitors the system clipboard, automatically substituting passwords with asterisks. Uniquely, the program leaves the last few characters (minimum 1, maximum 3) of the password visible when the password length exceeds 8 characters. Understanding Clipboard Monitoring in Go The Clipboard Package Go lacks a built-in library for clipboard operations. We use atotto/clipboard, a third-party package offering simple clipboard interfaces. ...

Cross-Account Logging: Shipping AWS Lambda Logs to OpenSearch In today’s distributed systems, logging and monitoring play a crucial role in detecting anomalies and ensuring system health. AWS Lambda and OpenSearch are often paired to deliver efficient, scalable logging solutions. However, complexities can arise when these resources live in separate AWS accounts. This blog post will guide you through the process of sending AWS Lambda logs from Account A to an OpenSearch cluster in Account B using Terraform as the Infrastructure as Code (IAC) tool and GitLab for CI/CD pipelines. ...