Featured

Why we built our own multi-CDN sync layer (and you shouldn't)

The story of how maintaining separate integrations with five different CDN providers forced us to either hire a dedicated person or build a solution. We built. And then we realized others needed this too.

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Performance

Cache hit ratio: a 12-month study across 5 providers

We analyzed cache hit ratios across Cloudflare, AWS CloudFront, Fastly, Bunny, and StackPath for identical traffic patterns. The results surprised us.

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Technical

Surrogate keys vs. URL purging: when each wins

A practical guide to cache invalidation strategies. When should you use surrogate keys? When should you stick with URL purging? The answer depends on your traffic pattern.

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Infrastructure

Synchronizing 50TB across 3 CDNs without dropping a packet

Case study: how we helped a financial services company synchronize massive data sets across three CDN providers simultaneously while maintaining zero packet loss.

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Business

The hidden costs of CDN vendor lock-in

A financial analysis of the true cost of lock-in: not just switching fees, but engineering time, technical debt, and the opportunity cost of not exploring better providers.

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Technical

Building a HMAC-signed webhook system at scale

How we implemented webhook signing for CDNsync's event delivery system. Covers HMAC-SHA256, batching strategies, and retry logic that handles 10K+ events per second.

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Performance

How we cut p99 sync latency from 800ms to 38ms

A detailed performance engineering case study. We traced network requests, optimized API parallelization, and discovered a surprising bottleneck in connection pooling.

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