Algo VPN is a deployment tool that automates the setup of a personal VPN server on cloud providers or local Ubuntu machines. It uses Ansible to provision a hardened server running strongSwan (IKEv2/IPsec) and WireGuard, with optional DNS encryption via dnscrypt-proxy and privacy enhancements like log rotation and history clearing. The architecture is a set of Ansible playbooks and roles, orchestrated by a shell script entry point (`algo`) that invokes `ansible-playbook`. Cloud provisioning is handled by provider-specific roles (AWS EC2, DigitalOcean, Azure, GCE, etc.), while server configuration roles handle system hardening, PKI certificate generation, VPN service configuration, and client profile generation (mobileconfig, WireGuard .conf, QR codes). The system is designed for security and privacy: it uses strong crypto defaults (ECC secp384r1), minimal logging, and unattended upgrades. External dependencies include Ansible, community.crypto collection, cloud provider SDKs, and the dnscrypt-proxy package. The primary data flow is: user edits `config.cfg` → Ansible playbook runs → cloud VM is created → server is configured with VPN services → client configuration files are generated and stored locally. User management (add/revoke) is handled by a separate playbook. The repository includes extensive unit, integration, and end-to-end tests, with Docker-based integration testing and CI/CD via GitHub Actions.
Spinnaker is a continuous delivery platform with a microservices architecture for deploying and managing applications across multiple cloud providers. The system consists of distinct services including clouddriver (cloud abstraction), orca (pipeline orchestration), deck (React/UI), gate (API gateway), fiat (authorization), front50 (storage), echo (event processing), igor (CI integrations), kayenta (canary analysis), and rosco (image baking). It features polyglot implementation (Java/Kotlin/TypeScript/Groovy), Spring Boot backend services, React frontend, RESTful APIs, event-driven architecture, and extensive cloud provider integrations. The platform enables pipeline definition, execution, artifact management, and deployment strategies across AWS, Kubernetes, GCP, Azure, and other environments.