pgAdmin 4 is the official, full-featured web-based administration and development platform for PostgreSQL. It provides a graphical interface for managing databases, schemas, tables, views, functions, roles, and server connections; a SQL query editor with syntax highlighting and query execution plans; a visual schema designer; backup and restore wizards; and monitoring dashboards for server statistics. pgAdmin […]
Regular database backups are non-negotiable for any production system. mysqldump is the standard MySQL/MariaDB logical backup tool — it exports database contents as SQL statements (CREATE TABLE, INSERT) that can be restored on any compatible server. While mysqldump is not the fastest solution for very large databases (where Percona XtraBackup or MySQL Enterprise Backup are […]
MySQL Group Replication extends traditional primary-replica replication with a built-in, distributed consensus protocol (Paxos-based) that provides automatic failover, multi-primary writes, and conflict detection. Unlike standard replication where a manual intervention is needed to promote a replica to primary, Group Replication automatically elects a new primary if the current primary fails — making it the foundation […]
MySQL primary-replica replication (formerly called master-slave) copies data changes from a primary (write) server to one or more replica (read) servers in near-real-time. Replication solves multiple operational problems: distributing read traffic across replicas reduces load on the primary, a replica provides a hot standby for failover if the primary fails, replicas can be used for […]
phpMyAdmin is a web-based graphical administration interface for MySQL and MariaDB databases. It allows developers and DBAs to manage databases, tables, rows, users, and permissions through a browser without needing to use the command-line MySQL client. phpMyAdmin is especially useful for non-technical users who need to browse data, run queries, import/export CSV or SQL files, […]
Redis (Remote Dictionary Server) is an in-memory data structure store used as a cache, session store, real-time leaderboard, pub/sub message broker, and rate-limiting backend. Redis stores all data in RAM with optional disk persistence, making it orders of magnitude faster than relational databases for lookups: sub-millisecond response times at millions of operations per second. Common […]
MongoDB is a document-oriented NoSQL database that stores data as BSON (Binary JSON) documents rather than rows in tables. This schema-flexible approach makes MongoDB ideal for applications with rapidly evolving data models, hierarchical data (product catalogs, user profiles, content management), geospatial queries, and high-volume write workloads. MongoDB 7.x introduced significant improvements including multi-document ACID transactions, […]
PostgreSQL (often called Postgres) is an advanced open-source relational database with a 35-year development history. Unlike MySQL/MariaDB, PostgreSQL prioritises SQL standards compliance, data integrity, and extensibility over speed-at-any-cost. PostgreSQL excels at complex queries, full-text search, JSONB document storage, geospatial data (PostGIS extension), and write-heavy workloads that require strong ACID compliance. It is the preferred database […]
MariaDB is a community-developed, fully open-source relational database and the default MySQL-compatible database in RHEL 9. It was created by the original MySQL developers after Oracle’s acquisition of MySQL and maintains complete protocol and API compatibility with MySQL applications. MariaDB 10.11 LTS is the current Long Term Support release, offering features that MySQL 8 does […]
MySQL is the world’s most widely deployed open-source relational database, powering WordPress, Magento, Drupal, and countless custom web applications. RHEL 9’s AppStream does not include MySQL directly — it ships MariaDB as the default MySQL-compatible database. To install the latest MySQL 8.4 LTS (or MySQL 8.0), you must add the official MySQL Community repository from […]
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