Ruby is a dynamic, object-oriented programming language best known as the language behind Ruby on Rails, the influential web framework that popularised convention-over-configuration and RESTful web applications. rbenv is the standard Ruby version manager for production servers — it allows installing and switching between multiple Ruby versions per user or per directory, without requiring root […]
Rust is a systems programming language focused on memory safety, performance, and concurrency. Rust achieves memory safety without a garbage collector through its ownership and borrowing system, which enforces at compile time that there are no dangling pointers, buffer overflows, or data races. This makes Rust suitable for building high-performance systems software where both safety […]
Go’s standard library includes a production-ready HTTP server with support for HTTP/2, TLS, and concurrent request handling — no external framework is required for simple web applications. For more complex applications, the Gin framework adds routing, middleware, request binding, and response rendering while maintaining excellent performance. Go web applications compile to a single binary, making […]
Go (Golang) is a statically typed, compiled systems programming language developed by Google. Its primary design goals are simplicity, fast compilation, and excellent concurrency support through goroutines and channels. Go compiles to a single statically linked binary with no runtime dependencies — deploying a Go application means copying a single binary to the target server. […]
Spring Boot is the most widely used Java web framework, providing an opinionated, auto-configured platform for building standalone, production-ready applications. Spring Boot embeds an HTTP server (Tomcat, Jetty, or Undertow) directly in the application JAR, eliminating the need for a separate application server deployment. A Spring Boot application is packaged as an executable “fat JAR” […]
Maven and Gradle are the two dominant build tools for Java projects. Maven uses an XML-based declarative configuration (pom.xml), follows strict conventions, and dominates in enterprise environments with heavy use of the Maven Central repository for dependency management. Gradle uses a Groovy or Kotlin DSL, is more flexible and faster than Maven (due to incremental […]
Java is the most widely deployed programming language in enterprise environments, powering banking systems, e-commerce platforms, microservices, Android applications, and big data frameworks like Apache Kafka, Hadoop, and Spark. OpenJDK (Open Java Development Kit) is the open-source reference implementation of the Java SE specification, maintained by Red Hat, IBM, and the Java community. RHEL 9 […]
PM2 is a production-grade process manager for Node.js applications. Running a Node.js app directly with node server.js has a critical limitation: if the process crashes, it stays down until someone manually restarts it. PM2 solves this and much more — it automatically restarts crashed processes, starts applications on system boot, enables zero-downtime reloads for application […]
NVM (Node Version Manager) allows installing and switching between multiple Node.js versions on the same machine without system-level package manager involvement. This is essential for developers or servers that need to run different Node.js versions for different projects — for example, running a legacy application on Node.js 16 while developing a new application on Node.js […]
Node.js is a JavaScript runtime built on Chrome’s V8 engine that enables server-side JavaScript execution. Its non-blocking, event-driven I/O model makes it exceptionally efficient for real-time applications, REST APIs, streaming services, and microservices that handle many concurrent connections. The RHEL 9 default AppStream provides Node.js 18, but the NodeSource repository provides the latest LTS releases […]
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