Description

This curriculum spans the technical and operational complexity of a global CDN deployment, comparable to a multi-phase infrastructure rollout involving network architecture, security hardening, performance tuning, and compliance alignment across distributed teams.

Module 1: CDN Architecture and Network Topology Design

Selecting between overlay, peer-to-peer, and hybrid CDN architectures based on traffic patterns and origin server constraints.
Deploying Points of Presence (PoPs) in emerging markets with limited backbone connectivity while balancing latency and cost.
Integrating third-party CDN providers with private CDN infrastructure to manage regional coverage gaps.
Configuring anycast routing to optimize client-to-PoP latency and failover behavior across distributed nodes.
Designing multi-homed edge networks to ensure redundancy and mitigate transit provider outages.
Implementing DNS-based load balancing to route clients to the nearest or least congested PoP.

Module 2: Content Caching Strategies and Cache Efficiency

Setting TTL values based on content volatility, origin update frequency, and user expectations for freshness.
Configuring cache keys to include query string parameters, headers, or cookies when required for accurate content delivery.
Implementing cache invalidation workflows using purge APIs while managing purge storm risks during bulk updates.
Using stale-while-revalidate and stale-if-error policies to maintain availability during origin failures.
Segmenting cache hierarchies into edge, regional, and origin shield tiers to reduce upstream load.
Monitoring hit ratio degradation due to cache poisoning or inefficient key normalization and adjusting logic accordingly.

Module 3: Security and Threat Mitigation at the Edge

Deploying Web Application Firewalls (WAF) at the edge with rule sets tuned to block OWASP Top 10 without false positives.
Configuring rate limiting per client IP, ASN, or API key to prevent abuse while preserving legitimate traffic.
Implementing DDoS mitigation strategies using automated traffic scrubbing and blackhole routing at PoPs.
Managing TLS certificate lifecycle across thousands of domains using automated provisioning and renewal.
Enforcing HTTP Strict Transport Security (HSTS) and certificate pinning policies at the edge layer.
Blocking malicious bots using behavioral analysis and reputation lists without impacting SEO crawlers.

Module 4: Performance Optimization and Latency Reduction

Implementing HTTP/2 and HTTP/3 support at edge servers to reduce connection overhead and improve multiplexing.
Applying image optimization techniques such as format conversion (WebP/AVIF), resizing, and lazy loading at the CDN layer.
Using Edge Side Includes (ESI) to assemble personalized content at the edge while caching static fragments.
Configuring TCP optimizations like BBR and selective acknowledgments on edge servers for high-latency paths.
Reducing Time to First Byte (TTFB) by pre-warming cache for anticipated traffic spikes using synthetic requests.
Monitoring Real User Monitoring (RUM) data to identify regional performance bottlenecks and adjust routing.

Module 5: Global Traffic Management and Routing Policies

Configuring DNS failover policies to redirect traffic during regional outages or origin degradation.
Implementing geo-proximity routing to direct users to the closest operational PoP based on latency measurements.
Using weighted routing to distribute traffic across multiple origins during phased rollouts or canary deployments.
Enforcing geo-blocking or geo-routing compliance based on data sovereignty regulations like GDPR or CCPA.
Integrating BGP health checks with routing decisions to detect upstream network failures automatically.
Managing TTL settings in DNS responses to balance control granularity with propagation delays during failover.

Module 6: Content Origin and Backhaul Optimization

Designing origin fetch strategies to minimize backhaul bandwidth using delta encoding and conditional requests.
Implementing origin shielding with a regional cache layer to absorb traffic and protect origin infrastructure.
Configuring origin health checks with circuit breaker patterns to prevent cascading failures during outages.
Using private backbone connections between PoPs and origin data centers to reduce public internet exposure.
Optimizing TLS handshake performance between edge and origin using session resumption and OCSP stapling.
Managing asymmetric backhaul costs by routing traffic through lower-cost transit providers where feasible.

Module 7: Monitoring, Analytics, and Operational Visibility

Setting up distributed logging pipelines to aggregate edge server logs for forensic analysis and compliance.
Creating alerting thresholds for cache hit ratio, error rates, and latency percentiles across regions.
Correlating CDN performance metrics with application-level KPIs to identify delivery bottlenecks.
Using synthetic monitoring from global locations to validate PoP availability and content accuracy.
Generating traffic attribution reports to identify top clients, referrers, and abusive sources.
Integrating CDN telemetry with SIEM systems for real-time threat detection and incident response.

Module 8: Regulatory Compliance and Cross-Border Data Flow

Mapping data residency requirements to PoP locations and configuring routing to prevent cross-border content caching.
Implementing logging redaction policies to exclude PII from edge logs in compliance with privacy regulations.
Managing cookie consent enforcement at the edge for GDPR and ePrivacy Directive compliance.
Documenting data processing agreements with CDN providers for audit and compliance verification.
Configuring content takedown workflows to respond to legal requests within jurisdiction-specific timelines.
Enabling audit trails for configuration changes and access to CDN control plane for SOX or ISO 27001 compliance.