> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.z-craft.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Server Architecture

> Basic overview of Z-Craft server setup and infrastructure.

# Server Architecture

Basic overview of Z-Craft server setup and infrastructure.

## Server Setup

### Hardware Requirements

* **CPU:** Multi-core processor (8+ cores recommended)
* **RAM:** 16GB minimum, 32GB+ for better performance
* **Storage:** SSD storage for world files
* **Network:** Stable internet connection

### Software Stack

* **Server Software:** PaperMC (optimized Minecraft server)
* **Java Version:** Java 17 or 21
* **Operating System:** Linux (Ubuntu/Debian recommended)

## Server Instances

### Main Servers

* **Survival Server:** Main gameplay world
* **PvP Arena:** Competitive combat area
* **Creative Server:** Building and creative mode
* **Hub/Lobby:** Server selection and navigation

### Supporting Services

* **Database:** MySQL or PostgreSQL for player data
* **Backup System:** Regular world backups
* **Monitoring:** Basic performance tracking

## Performance Optimization

### Basic Optimizations

* Allocate appropriate RAM to server
* Use SSD storage for faster loading
* Keep plugins updated and minimal
* Monitor TPS and memory usage

### Configuration Tips

* Adjust view distance appropriately
* Limit entity counts in chunks
* Use performance-focused plugins
* Regular server restarts for maintenance

## Security Measures

### Basic Security

* Use strong passwords for server access
* Keep software updated
* Monitor for unauthorized access
* Regular security scans

### Player Safety

* Anti-cheat plugins
* Chat moderation
* Report system for violations
* Regular log reviews

## Backup Strategy

### Backup Schedule

* Daily automatic backups
* Manual backups before major changes
* Offsite backup storage
* Test restore procedures regularly

### What to Backup

* World files
* Player data
* Plugin configurations
* Server settings

***

**For technical details, contact server administrators.**

***

*Last updated: December 2024*

### Plugin Ecosystem

**Core Performance Plugins:**

* **ProtocolLib**: Network protocol optimization
* **ViaVersion/ViaBackwards**: Legacy client support
* **WorldGuard**: Region protection and management
* **WorldEdit**: Administrative world manipulation
* **CoreProtect**: Block logging and rollback
* **LuckPerms**: Advanced permission management
* **Vault**: Economy API integration

**Lifesteal-Specific Plugins:**

* **LifestealCore**: Heart-stealing mechanics engine
* **PvPManager**: Combat system and anti-cheat
* **BattleTracker**: PvP statistics and leaderboards
* **DeathManager**: Custom death handling and respawn logic

### Database Architecture

**Primary Database: PostgreSQL 15**

* **Configuration:** Optimized for high-concurrency OLTP workloads
* **Connection Pooling:** PgBouncer for efficient connection management
* **Replication:** Streaming replication to hot standby servers
* **Backup Strategy:** Continuous WAL archiving with Point-in-Time Recovery

**Caching Layer: Redis Cluster**

* **Version:** Redis 7.0 with clustering enabled
* **Persistence:** AOF (Append Only File) with fsync every second
* **Memory Management:** 32GB allocated with eviction policies
* **Use Cases:** Session storage, temporary data, rate limiting

## Performance Monitoring & Optimization

### Real-Time Monitoring Stack

**Grafana + Prometheus + Node Exporter:**

* **Metrics Collection:** 1-second intervals for critical systems
* **Dashboards:** Custom dashboards for each server instance
* **Alerting:** Slack integration for immediate staff notifications
* **Historical Data:** 1-year retention for trend analysis

### Key Performance Indicators (KPIs)

| Metric                | Target    | Critical Threshold | Alert Action               |
| --------------------- | --------- | ------------------ | -------------------------- |
| **Server TPS**        | 19.8-20.0 | \< 18.0            | Immediate investigation    |
| **Average Ping**      | \< 45ms   | > 100ms            | Network optimization       |
| **Memory Usage**      | \< 85%    | > 95%              | Server restart preparation |
| **CPU Usage**         | \< 70%    | > 90%              | Load balancing activation  |
| **Player Capacity**   | 500 max   | 600+               | Overflow server activation |
| **Database Response** | \< 50ms   | > 200ms            | Query optimization         |

### Automated Performance Optimization

**Dynamic Configuration Adjustments:**

* View distance scaling based on player count
* Entity activation range optimization
* Chunk loading prioritization
* Network compression for high-latency players

**Proactive Maintenance:**

* Daily automated restarts during low-traffic windows
* Weekly full garbage collection cycles
* Monthly plugin updates and security patches
* Quarterly hardware performance audits

## Backup & Disaster Recovery

### Multi-Tier Backup Strategy

**Real-Time Backups:**

* **Frequency:** Continuous block-level backups
* **Retention:** 24 hours rolling window
* **Storage:** Local NVMe storage with RAID protection

**Daily Backups:**

* **Schedule:** 3:00 AM UTC daily
* **Retention:** 30 days
* **Storage:** Encrypted off-site object storage
* **Verification:** Automated integrity checks

**Weekly Snapshots:**

* **Schedule:** Sunday 2:00 AM UTC
* **Retention:** 3 months
* **Storage:** Multiple geographic regions
* **Testing:** Monthly restoration drills

### Disaster Recovery Procedures

**Critical Incident Response Plan:**

<Steps>
  1. **Detection & Assessment** (0-5 minutes)
     * Automated monitoring alerts trigger
     * Incident severity assessment by on-call staff
     * Player communication initiated if service impact

  2. **Containment** (5-15 minutes)
     * Isolate affected systems
     * Activate backup systems if available
     * Implement emergency access restrictions

  3. **Recovery Execution** (15-60 minutes)
     * Restore from latest clean backup
     * Verify system integrity and data consistency
     * Gradual service restoration with monitoring

  4. **Post-Incident Analysis** (1-24 hours)
     * Root cause analysis
     * Documentation of lessons learned
     * Implementation of preventive measures
</Steps>

**Recovery Time Objectives (RTO):**

* **Critical Services:** \< 30 minutes
* **Full Network:** \< 2 hours
* **Data Recovery:** \< 4 hours

**Recovery Point Objectives (RPO):**

* **Player Data:** \< 5 minutes data loss
* **World Data:** \< 15 minutes data loss
* **Transaction Data:** \< 1 minute data loss

## Security Architecture

### Network Security Layer

**Enterprise DDoS Protection:**

* **Provider:** Cloudflare Enterprise with Magic Transit
* **Mitigation Capacity:** 100+ Tbps protection capacity
* **Detection:** AI-powered threat intelligence
* **Response Time:** \< 10 seconds for attack mitigation

**Firewall Configuration:**

```bash theme={null}
# iptables rules for server protection
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]

# Allow established connections
-A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT

# Allow SSH from specific IPs
-A INPUT -p tcp -s STAFF_IP_RANGE --dport 22 -j ACCEPT

# Allow Minecraft connections
-A INPUT -p tcp --dport 25565 -j ACCEPT

# Rate limiting for connection attempts
-A INPUT -p tcp --dport 25565 -m conntrack --ctstate NEW -m limit --limit 10/min --limit-burst 20 -j ACCEPT

COMMIT
```

### Application Security

**Plugin Security Scanning:**

* Automated vulnerability scanning before deployment
* Sandboxed testing environment for new plugins
* Code review requirements for custom developments
* Regular security audits by external consultants

**Access Control:**

* Multi-factor authentication for all staff accounts
* Role-based access control (RBAC) with principle of least privilege
* Session management with automatic timeouts
* Comprehensive audit logging for all administrative actions

## Scalability & Growth Planning

### Current Capacity Metrics

* **Concurrent Players:** 2,500+ across all servers
* **Peak Concurrent:** 3,200 during special events
* **Database Records:** 500,000+ registered players
* **Daily Active Users:** 15,000+ average
* **Monthly Active Users:** 75,000+ unique players

### Horizontal Scaling Strategy

**Server Instance Scaling:**

* Automated server provisioning via Terraform
* Load balancer configuration updates
* Database connection pool expansion
* Redis cluster node addition

**Geographic Expansion:**

* **Phase 1:** US West Coast server cluster (Q2 2024)
* **Phase 2:** European server cluster (Q3 2024)
* **Phase 3:** Asian Pacific server cluster (Q4 2024)

### Performance Scaling Triggers

| Metric              | Threshold       | Action                            |
| ------------------- | --------------- | --------------------------------- |
| **Average TPS**     | \< 19.5         | Deploy additional server instance |
| **Player Queue**    | > 50 players    | Activate overflow server          |
| **Memory Usage**    | > 90% sustained | Scale vertical resources          |
| **Database Load**   | > 80% CPU       | Add read replicas                 |
| **Network Latency** | > 75ms average  | Geographic load balancing         |

## Compliance & Governance

### Data Protection

**GDPR Compliance:**

* Data minimization principles
* Right to erasure implementation
* Consent management for data collection
* International data transfer safeguards

**Player Data Handling:**

* Encrypted storage at rest and in transit
* Regular data purging of inactive accounts
* Transparent privacy policy communication
* Data breach notification procedures

### Service Level Agreements

**Uptime Commitment:** 99.95% monthly uptime
**Performance Standards:** 19.8+ TPS average
**Support Response:** \< 15 minutes for critical issues
**Backup Integrity:** 100% restoration success rate

***

**Need technical details or have infrastructure questions?** Contact the technical team via [staff modmail](/support/modmail) or join our [Discord server](/community/discord) for real-time support. 🔧

***

*Last updated: December 2024 | Document Version: 2.1*
