Docker Engine is the industry-standard container platform that packages applications and their dependencies into portable, isolated containers. A Docker container bundles the application code, runtime, libraries, and configuration into a single image that runs identically on any Linux host with Docker installed, eliminating the “it works on my machine” problem. RHEL 9 does not include […]
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 […]
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 […]
Percona XtraBackup is the industry-standard open-source tool for online, non-blocking hot backups of MySQL and MariaDB InnoDB databases. Unlike mysqldump, which produces a logical SQL dump and requires more time for large databases, XtraBackup performs a physical backup — copying InnoDB data files directly while MySQL is running, without acquiring table locks that would block […]
MariaDB Galera Cluster is a synchronous multi-primary cluster for MariaDB/MySQL that provides true high availability with no single point of failure. Unlike standard primary-replica replication where only one node accepts writes and replicas are read-only, Galera Cluster allows writes to any node simultaneously — all nodes are always primary, always in sync, and always up-to-date. […]
SQLite is a self-contained, serverless, zero-configuration SQL database engine that stores an entire database in a single file on disk. Unlike MySQL, PostgreSQL, and MongoDB which require a running server process, SQLite is a library that is linked directly into the application — there is no network connection, no authentication, and no administration overhead. SQLite […]
PostgreSQL provides two complementary backup tools: pg_dump for logical backups of individual databases (SQL statements that can be restored to any PostgreSQL version) and pg_basebackup for physical backups of the entire database cluster (exact byte-for-byte copy of the data directory, used for streaming replication setup and point-in-time recovery). pg_dump is the right tool for most […]
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