Miniflux is a self-hosted, minimalist RSS/Atom feed reader implemented as a monolithic Go web application. It relies exclusively on PostgreSQL for persistence and serves a server-rendered web UI, a comprehensive REST API, and compatibility endpoints for the Fever and Google Reader APIs. The application is designed for low resource consumption and easy deployment, evidenced by its single-binary nature and extensive packaging (Docker, RPM, Deb, systemd). The core strength of the codebase lies in its feed ingestion pipeline, which demonstrates exceptional defensive programming against the chaotic and non-standardized world of web feeds. This pipeline includes robust format detection (RSS, Atom, RDF, JSON Feed), character encoding detection for legacy charsets, a port of the Mozilla Arc90 readability algorithm for content extraction, a highly restrictive HTML sanitizer with SSRF protection, and a DSL-based content rewrite engine. The system supports multi-user authentication (local, OAuth2, WebAuthn), extensive third-party integrations (Discord, Slack, Telegram, Pinboard, etc.), and background job processing for feed refreshes. The codebase exhibits high craftsmanship with clean abstractions, consistent builder patterns, and thorough testing (unit, integration, fuzz). Several components, such as the SSRF-safe HTTP client builder, the readability extraction algorithm, the i18n pluralization engine, and the HTML sanitizer, are isolated, well-documented, and could be extracted for use in other Go projects. The project is actively maintained with modern Go features, zero Dependabot alerts, and a strong CI/CD pipeline. The main maintenance burden is the sprawl of third-party integrations and the monolithic JavaScript frontend, but the core Go server code is exceptionally well-engineered.