Cloud Scaling and Performance

Cloud Scaling Architecture

Internet
  |
  +-- CDN (Fastly)
  |
  +-- Load Balancer
  |
  +-- Web Nodes (Auto-scaled)
  |     +-- Node 1
  |     +-- Node 2
  |     +-- Node N (scales based on traffic)
  |
  +-- Services (Managed)
        +-- MySQL (read replicas)
        +-- Redis (cluster)
        +-- Elasticsearch

Scaling Rules

# .magento.service.yaml (conceptual)
web:
    type: php:8.1
    size: S
    scaling:
        min: 2
        max: 8
        metrics:
            cpu: 70%
            memory: 80%
            requests_per_second: 1000

Horizontal Scaling

# Check current nodes
magento-cloud environment:info

# Scale web nodes
magento-cloud environment:info --property web_nodes

# Monitor node count
watch -n 5 'magento-cloud environment:info --property web_nodes'

Vertical Scaling

# Upgrade service plan
magento-cloud service:plan:update mysql --size L

# Check current plan
magento-cloud service:plan:list

# Upgrade web node size
magento-cloud environment:info --property web_size

Key Takeaway

Cloud auto-scales web nodes based on traffic. Monitor node count and resource usage. Upgrade service plans for vertical scaling.

Redis Resource Management

# .magento/services.yaml
redis:
    type: redis:6.0
    configuration:
        maxmemory: 2147483648  # 2GB
        maxmemory_policy: allkeys-lru

MySQL Resource Management

mysql:
    type: mysql:10.6
    disk: 4096  # 4GB disk
    configuration:
        max_connections: 200
        innodb_buffer_pool_size: 1073741824  # 1GB

Elasticsearch Resource Management

elasticsearch:
    type: elasticsearch:7.17
    disk: 2048  # 2GB disk
    configuration:
        heap_size: 512m
        cluster_name: magento

Shared Storage Management

# Check storage usage
magento-cloud mount:list

# Resize shared storage
magento-cloud mount:resize pub/media --size 10240

# Check disk usage
magento-cloud ssh
df -h /mnt/pub/media

Resource Monitoring

# Monitor resource usage
magento-cloud environments:info

# Check service status
magento-cloud service:list

# View resource limits
magento-cloud service:plan:list

Key Takeaway

Manage Redis memory, MySQL connections, Elasticsearch heap, and shared storage. Monitor resource usage and upgrade plans as needed.

CDN Optimization

# Fastly configuration
fastly:
    enabled: true
    ttl: 60
    stale_ttl: 86400

Varnish Optimization

# Enable Varnish
magento-cloud variable:create \
    --name env:HTTP_CACHE_HOSTS \
    --value 'varnish:6081'

# Check Varnish status
magento-cloud ssh
varnishstat -f MAIN.cache_hit

Redis Optimization

# Check Redis stats
magento-cloud ssh
redis-cli info stats

# Optimize Redis memory
redis-cli config set maxmemory 2147483648
redis-cli config set maxmemory-policy allkeys-lru

PHP-FPM Optimization

; /etc/php/8.1/fpm/pool.d/www.conf
pm = dynamic
pm.max_children = 50
pm.start_servers = 10
pm.min_spare_servers = 5
pm.max_spare_servers = 20
pm.max_requests = 500

; OPcache
opcache.enable=1
opcache.memory_consumption=256
opcache.max_accelerated_files=20000

Database Optimization

-- Enable query cache
SET GLOBAL query_cache_type = 1;
SET GLOBAL query_cache_size = 67108864;  -- 64MB

-- Optimize tables
OPTIMIZE TABLE catalog_product_entity;
OPTIMIZE TABLE sales_order;

Key Takeaway

Optimize with CDN, Varnish, Redis, PHP-FPM, and database tuning. Monitor cache hit ratios and query performance.

Cloud Monitoring

# Monitor environment
magento-cloud environments:info

# Check service status
magento-cloud service:list

# View resource usage
magento-cloud ssh
top -bn1 | head -20

Custom Metrics

<?php
// Track scaling metrics
class ScalingMetrics
{
    private $prometheus;
    
    public function recordWebNodes(int $count): void
    {
        $this->prometheus->gauge(
            'magento_cloud_web_nodes',
            'Number of web nodes',
            $count
        );
    }
    
    public function recordRequestRate(float $rps): void
    {
        $this->prometheus->gauge(
            'magento_cloud_requests_per_second',
            'Requests per second',
            $rps
        );
    }
}

Alert Configuration

# Prometheus alerts
groups:
  - name: scaling-alerts
    rules:
      - alert: HighCPU
        expr: cpu_usage_percent > 80
        for: 5m
        labels:
          severity: warning
        annotations:
          summary: "High CPU usage detected"
      
      - alert: HighMemory
        expr: memory_usage_percent > 85
        for: 5m
        labels:
          severity: warning
        annotations:
          summary: "High memory usage detected"
      
      - alert: ScalingRequired
        expr: requests_per_second > 1000
        for: 10m
        labels:
          severity: info
        annotations:
          summary: "Consider scaling up"

Cost Optimization

# Monitor costs
magento-cloud environments:info --property size

# Downscale during low traffic
magento-cloud environment:info --property web_nodes

# Use appropriate service plans
magento-cloud service:plan:list

# Clean up unused environments
magento-cloud environment:deactivate <branch>

Key Takeaway

Monitor CPU, memory, request rates, and costs. Set up alerts for high usage. Downscale during low traffic to optimize costs.