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Behind every fast request.
A closer look at the networks, decisions, and details that make the web work better. Practical reading from Aptranet.
Editor's pick Performance
Fast at home. Slow everywhere else. Here’s how to investigate.
Build a regional performance test that separates network latency, cache behavior, and browser work—then fix the part your visitors actually wait for.
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Managed DNS vs registrar DNS
Managed Cloud DNS adds Anycast, health checks, flattening and low TTLs. Registrar DNS is a default, not a traffic-steering platform.
What to look for in a CDN provider
A 2026 CDN checklist: footprint, Origin Shield, HTTP/3, image and video, purge, DNS cutover, origin protection and a migration you can rehearse.
Cloud CDN vs self-hosted nginx cache
An nginx cache near the application and a distributed CDN solve overlapping but different delivery problems.
Multi-CDN explained: when a second CDN is worth it
Multi-CDN is an architecture, not a default. Get one Cloud CDN distribution correct, then add a second path if you have a real failure domain to cover.
DNS DDoS: why authority is the first target
A DNS flood takes the name off the internet before the CDN sees a request. Cloud DNS Anycast is built to stay reachable under volumetric attack.
Anycast vs unicast DNS
Anycast changes how a service address is reached; unicast assigns an address to a specific destination. Neither label alone proves operational resilience.
CDN vs no CDN: what changes for a global audience
A CDN adds an operational layer that can improve reusable content delivery. Its benefit depends on traffic geography, cacheability, and configuration.
How to hide your origin IP behind a CDN
A CDN only hides origin if DNS points at the edge and the origin IP is firewalled to Cloud CDN pull.
Origin offload: keep PHP, Node and storage off the public path
Origin offload is cache hit ratio plus Shield plus hiding the origin IP. How Cloud CDN reduces worker and bandwidth cost.
Cache hit ratio: useful signal, incomplete picture
Calculate request hit ratio and byte offload, identify cache-key fragmentation, and improve reuse without caching private responses.
Token authentication for CDN downloads and video
Gate cached Cloud CDN objects with secure tokens so paid downloads, pre-load depots and premium video are not freely shareable.
Fast at home. Slow everywhere else. Here’s how to investigate.
Build a regional performance test that separates network latency, cache behavior, and browser work—then fix the part your visitors actually wait for.