Description

This curriculum spans the technical and operational complexity of a global CDN deployment, comparable to multi-phase infrastructure projects undertaken by enterprise network teams or external consultancy engagements focused on large-scale content delivery systems.

Module 1: CDN Architecture and Network Topology Design

Selecting between overlay and integrated CDN architectures based on existing ISP infrastructure and peering agreements.
Deploying Points of Presence (PoPs) in regions with high user density while balancing latency reduction against colocation costs.
Implementing Anycast routing to direct clients to the nearest available PoP and managing BGP propagation delays.
Configuring load balancers at PoP ingress to distribute traffic across edge servers based on CPU and memory utilization.
Designing failover paths between PoPs to maintain service continuity during regional outages or DDoS attacks.
Integrating third-party backbone providers into the CDN topology and negotiating SLAs for cross-network performance.

Module 2: Content Ingestion and Origin Management

Configuring secure origin pull mechanisms using signed URLs or IP whitelisting to prevent unauthorized access.
Implementing origin shielding to reduce load on origin servers by ensuring all requests route through edge caches.
Setting up automated content purging workflows triggered by CMS updates or version rollouts.
Managing origin failover configurations when primary origin servers become unreachable or overloaded.
Optimizing large file ingestion pipelines using chunked uploads and parallel transfer protocols like Aspera or QUIC.
Enforcing TLS 1.3 between edge nodes and origin servers to secure data in transit without degrading throughput.

Module 3: Caching Strategy and Cache Hierarchy

Defining TTL policies per content type (e.g., HTML vs. images) based on update frequency and user expectations.
Implementing multi-tier caching with edge, regional, and core caches to balance hit rates and storage costs.
Using cache keys that incorporate query parameters, cookies, or device types when serving personalized content.
Deploying cache locking to prevent cache stampedes during sudden traffic spikes to stale or uncached objects.
Configuring stale-while-revalidate and stale-if-error directives to maintain availability during origin fetch failures.
Monitoring cache hit ratio per PoP and adjusting eviction algorithms (e.g., LRU vs. LFU) based on access patterns.

Module 4: Performance Optimization and Request Routing

Implementing DNS-based load balancing with latency-sensitive resolution to direct users to optimal PoPs.
Configuring HTTP/2 and HTTP/3 support at edge nodes to reduce connection overhead and improve page load times.
Applying TCP optimization techniques such as BBR congestion control on inter-PoP links.
Using EDNS Client Subnet (ECS) in DNS responses to improve geolocation accuracy for mobile users behind NATs.
Deploying adaptive bitrate streaming logic at the edge for video content with dynamic manifest rewriting.
Integrating Real User Monitoring (RUM) data into routing decisions to adjust traffic distribution based on actual performance.

Module 5: Security, DDoS Mitigation, and Access Control

Deploying Web Application Firewalls (WAF) at the edge to filter malicious payloads before they reach origin.
Configuring rate limiting rules per IP, URI, or API endpoint to mitigate credential stuffing and scraping attacks.
Implementing bot management policies using behavioral analysis and device fingerprinting at the edge layer.
Enabling automatic DDoS detection and mitigation using traffic anomaly thresholds and blackhole routing.
Managing certificate lifecycles for thousands of domains using automated ACME clients across distributed edge nodes.
Enforcing geo-blocking or geo-fencing rules based on legal compliance requirements or licensing restrictions.

Module 6: Analytics, Monitoring, and Operational Visibility

Aggregating and indexing edge logs across global PoPs for centralized analysis using distributed query systems.
Setting up alerting thresholds for cache miss spikes, error rates, or origin bandwidth surges.
Correlating CDN performance metrics with application-level KPIs such as transaction completion or bounce rate.
Implementing synthetic monitoring from global vantage points to validate content availability and latency SLAs.
Using flow logs to trace malicious requests back to source and identify attack patterns across regions.
Optimizing log sampling rates to balance storage costs with forensic investigation needs during incidents.

Module 7: Multi-CDN and Hybrid Distribution Strategies

Selecting traffic steering algorithms (e.g., performance-based, cost-based, or availability-based) for multi-CDN setups.
Integrating third-party CDNs via API to offload traffic during peak loads or regional failures.
Managing DNS providers that support dynamic decision-making based on real-time health and performance data.
Standardizing logging and monitoring formats across multiple CDNs for unified observability.
Negotiating peering agreements with competing CDNs to reduce transit costs for cross-network content delivery.
Implementing fallback logic to switch CDN providers during sustained performance degradation or outages.

Module 8: Compliance, Legal, and Data Residency

Configuring data routing policies to ensure user content is cached only in jurisdictions compliant with GDPR or CCPA.
Implementing audit trails for content access and cache modifications to meet regulatory requirements.
Managing takedown request workflows from legal entities and propagating removals across all cached locations.
Enforcing data minimization at edge nodes by stripping unnecessary headers or cookies before caching.
Documenting data flow architectures for external audits related to SOC 2, ISO 27001, or similar frameworks.
Restricting inter-PoP replication of sensitive content to prevent unauthorized cross-border data transfers.