Drupal 9
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| Drupal 9 | |
|---|---|
| Name | Drupal 9 |
| Developer | Drupal Association |
| Released | 2020-06-03 |
| Programming language | PHP |
| Operating system | Cross-platform |
| License | GNU General Public License v2+ |
Drupal 9 Drupal 9 is a major release of the open-source content management system first created by Dries Buytaert and maintained by the Drupal Association and a global contributor community. It continues the project's emphasis on modularity, extensibility, and community-driven governance while aligning with modern PHP standards and upstream libraries. The release focuses on backward-compatible APIs, dependency updates, and an incremental upgrade path from the previous long-term release.
Overview
Drupal 9 succeeds a long lineage of web platforms and builds on foundations originally established with early versions associated with the University of Antwerp and contributors linked to projects like GNU General Public License stewardship under the Free Software Foundation. The release integrates libraries and components from projects such as Symfony (software), Twig (template engine), and Composer (software), while remaining under the stewardship of the Drupal Association and the broader contributor base exemplified by initiatives around Open Source Initiative advocacy. Governance and project decision-making draw influence from collaborative models seen in Apache Software Foundation projects and community norms present in GitLab and GitHub ecosystems.
History and Development
Development followed a roadmap shaped by community sprints, working groups, and strategic discussions held at events like DrupalCon and meetups influenced by organizational practices of groups such as Linux Foundation consortiums. Key contributors included maintainers and core committers active in the project alongside input from organizations such as the European Commission when public sector requirements intersected with accessibility standards like Web Content Accessibility Guidelines. Major planning milestones paralleled release management methods used in projects like Ubuntu (operating system) and Debian, emphasizing long-term support and compatibility with PHP versions promoted by the PHP Group. Decisions to deprecate legacy APIs mirrored shifts seen in ecosystems led by Symfony (software) and package management evolutions akin to those in Composer (software).
Architecture and Features
The platform's architecture uses a modular core with pluggable subsystems that echo component-based designs from Symfony (software) and templating approaches from Twig (template engine). It supports configuration management patterns similar to approaches used by Kubernetes configuration paradigms and infrastructure-as-code practices promoted by HashiCorp tools. Content modeling leverages entity and field systems comparable to paradigms in WordPress plugins and Joomla extensions, while APIs for content delivery align with patterns in GraphQL and RESTful API design employed by projects like Stripe and Twitter API v2. Multilingual and accessibility features reflect compliance expectations set by institutions like W3C and standards comparable to ISO/IEC guidelines.
Migration and Upgrade Path
The upgrade path emphasized an incremental strategy to minimize disruption, influenced by migration tooling practices seen in Ansible playbooks and database migration approaches pioneered by frameworks such as Doctrine (PHP) and Ruby on Rails. Tools and contributed modules facilitated content and configuration migration processes comparable to export/import strategies used by Magento and TYPO3. Community guidance drew on case studies from large adopters including public sector implementations similar to projects run by United Nations agencies and municipal digital services modeled after initiatives from City of Barcelona and City of Boston digital teams.
Modules, Themes, and Ecosystem
An ecosystem of contributed modules and themes continued to be curated through repositories and contribution platforms similar to workflows in Packagist and npm (software), with major distributions and install profiles provided by organizations and agencies like Acquia and commercial partners analogous to Pantheon (company). Popular contributed projects paralleled integrations seen in Elasticsearch, Redis (database), and identity solutions comparable to OAuth 2.0 providers and LDAP directories. Design systems and frontend integrations referenced patterns in Bootstrap (front-end framework) and Material Design implementations.
Performance and Security
Performance tuning practices draw from caching strategies employed by Varnish and CDN deployments by providers such as Cloudflare and Akamai Technologies. Security hardening follows principles advocated by OWASP and lists similar to advisories from CERT Coordination Center, with coordinated disclosure and patch management processes akin to those used by Debian and Red Hat distributions. Automated testing, CI/CD pipelines, and static analysis integrate tools and services comparable to Jenkins and GitHub Actions workflows used across enterprise projects.
Adoption and Use Cases
The release continued adoption across sectors including higher education institutions like Massachusetts Institute of Technology, cultural organizations similar to Smithsonian Institution, and international NGOs resembling Amnesty International. Governments and municipalities relying on open-source stacks used setups comparable to deployments by the U.S. Digital Service and national e‑government projects in countries such as Estonia and Canada for content-rich sites, intranets, and digital services. Commercial adopters included digital agencies and platforms similar to Accenture and Deloitte Digital delivering tailored enterprise solutions.