On-Premise Infrastructure (Colocation):
  Purpose: Core trading engine and cold wallet storage
  Resources:
    - 50 physical servers
    - VMware ESXi virtualization platform
    - Ceph distributed storage (200TB)
    - OPNsense firewall cluster

Hetzner Cloud:
  Purpose: Additional compute and redundancy
  Resources:
    - Dedicated servers
    - Automated provisioning via Ansible
    - Load balancing tier

Google Cloud Platform:
  Purpose: Public-facing services and analytics
  Resources:
    - GKE (Google Kubernetes Engine)
    - Cloud SQL for relational data
    - Cloud Armor for DDoS protection
    - Global load balancing

Production Clusters:
  GKE (Google Cloud):
    - Public-facing trading interface
    - API gateway services
    - Real-time market data feeds
    - User authentication services

  K3s (On-Premise):
    - Core trading engine
    - Order matching engine
    - Wallet management services
    - Blockchain node management

  Management:
    - Rancher for centralized cluster management
    - Unified monitoring and logging
    - Cross-cluster service mesh

Nexus Registry:
  - Private container registry
  - Vulnerability scanning integration
  - Image signing and verification
  - Access control and audit logging

Security Measures:
  - Network policies for pod-to-pod communication
  - RBAC with least privilege access
  - Secret management with encrypted storage
  - Regular security scanning and updates

Architecture:
  Pools:
    - Hot data pool (SSD): Trading data, active wallets
    - Cold data pool (HDD): Historical data, backups
    - Metadata pool: File system metadata

  Replication:
    - 3x replication for critical data
    - 2x replication for warm data
    - Erasure coding for cold storage

  Performance:
    - IOPS optimization for trading engine
    - Low-latency access for hot wallets
    - Bandwidth optimization for blockchain sync

Other Storage Solutions:
  - Linstor for Kubernetes persistent volumes
  - PortWorx for database workloads
  - MinIO for object storage (S3 compatible)
  - NFS for shared application data

Supported Blockchains:
  - Bitcoin (BTC): Full node + pruned nodes
  - Ethereum (ETH): Geth full nodes
  - Litecoin (LTC): Full node
  - Other altcoins: Selective node deployment

Node Management:
  - Automated synchronization monitoring
  - Health checks and auto-healing
  - Version management and updates
  - Performance optimization

Hot Wallets (Online):
  Location: Kubernetes pods with strict security
  Purpose: Active trading and withdrawals
  Security:
    - Multi-signature requirements
    - Rate limiting on withdrawals
    - Real-time monitoring and alerts
    - Encrypted keys with HSM integration

Cold Wallets (Offline):
  Location: Air-gapped servers in colocation
  Purpose: Long-term storage of customer funds
  Security:
    - Hardware security modules (HSM)
    - Physical security controls
    - Multi-party authorization
    - Regular security audits

Warm Wallets (Semi-Online):
  Purpose: Balance between hot and cold
  Process: Automated cold-to-warm-to-hot transfers

Pipeline Architecture:
  - Jenkins master on Kubernetes
  - Dynamic agent provisioning
  - Parallel job execution
  - Docker-in-Docker builds

Stages:
  1. Code checkout and validation
  2. Unit and integration tests
  3. Security scanning:
     - Trivy for vulnerabilities
     - SonarQube for code quality
  4. Container image build and push
  5. Helm chart packaging
  6. Deployment to staging
  7. Automated testing
  8. Production deployment (manual approval)

GitLab Integration:
  - Self-hosted GitLab instance
  - Git repository management
  - Code review and merge requests
  - 100+ Helm charts for deployments

OPNsense Firewall:
  - High-availability cluster
  - Intrusion Detection System (IDS)
  - Intrusion Prevention System (IPS)
  - VPN for secure remote access
  - Traffic analysis and logging

Network Segmentation:
  - Isolated trading network
  - Separate blockchain node network
  - DMZ for public-facing services
  - Management network isolation
  - Strict firewall rules between segments

DDoS Protection:
  - Cloud Armor (GCP) for public endpoints
  - Rate limiting at multiple layers
  - Traffic scrubbing and filtering
  - Automated incident response

Security Measures:
  - Two-factor authentication (2FA) mandatory
  - IP whitelisting for API access
  - API rate limiting per user/IP
  - Session management and timeout
  - Encrypted communication (TLS 1.3)
  - Regular penetration testing
  - Bug bounty program

Infrastructure Monitoring (Zabbix):
  - Server hardware metrics
  - Network device monitoring
  - Service availability checks
  - Capacity planning metrics
  - Alerting and escalation

Application Monitoring (Prometheus/Grafana):
  - Trading engine performance
  - Order processing latency
  - Wallet transaction metrics
  - API response times
  - Custom business metrics

Log Aggregation (ELK Stack):
  - Centralized logging
  - Security event correlation
  - Audit trail for compliance
  - Real-time log analysis
  - Long-term log retention

Distributed Tracing (Jaeger):
  - Request flow visualization
  - Performance bottleneck identification
  - Dependency mapping

Infrastructure:
  - WebRTC signaling servers on Kubernetes
  - TURN/STUN servers for NAT traversal
  - Media servers for group calls
  - Load balancing for 1000+ concurrent users

Features:
  - Peer-to-peer video/audio calls
  - Screen sharing capabilities
  - Recording and playback
  - Integration with trading platform

Performance:
  - Low latency (<100ms)
  - Adaptive bitrate streaming
  - Network resilience
  - Quality monitoring