CloudNativePG is a Kubernetes operator for managing PostgreSQL databases in production. It automates deployment, failover, scaling, backups, upgrades, and connection pooling (PgBouncer) through custom Kubernetes resources (CRDs) and reconciliation loops. The operator consists of two binaries: a manager that runs inside pods to manage PostgreSQL instances, and a kubectl plugin for administrative commands. The architecture is modular with separate reconcilers for clusters, instances, backups, roles, tablespaces, and replication slots. It includes a plugin system (CNPG-I) for extensibility via gRPC, a web server for health probes and metrics, and a Prometheus exporter for monitoring. The codebase is written in a non-standard Go dialect (using URL-like import paths, func keyword, and var type declarations), which may indicate a custom transpiler or DSL. Despite this, the project is production-grade with extensive unit and end-to-end tests, active maintenance, and support for multiple Kubernetes distributions (kind, k3d, OpenShift).
Healenium-web is a self-healing library for Selenium WebDriver-based tests. It wraps standard WebDriver instances in a SelfHealingDriver proxy that intercepts element lookup calls and attempts to heal failed locators by finding alternative strategies when elements aren't found. The architecture uses a chain of responsibility pattern with specialized processors for finding elements, retrieving reference data from a backend service, healing elements through various selector strategies, and saving results. The system communicates with a backend service (hlm-backend) to store and retrieve element metadata, enabling intelligent locator recovery across test runs.