CDN
Content Delivery Network
CDN (Content Delivery Network) is a distributed network of servers that caches and serves static content and some dynamic content to users from the nearest node, speeding up website loading.
What is CDN (Content Delivery Network)?
A CDN, or content delivery network, is a set of servers (edge nodes) located in different countries and cities. When a user opens a website, the nearest edge node handles the request instead of the site owner's single origin server. This reduces latency, offloads the main server, and improves resilience under peak loads.
## How It Works
A CDN caches static files such as images, CSS, JavaScript, video, and fonts. On the first request, an edge node fetches the file from the origin server and stores it for a set period (TTL). Subsequent users receive the copy from the node. Some providers can also cache dynamic responses and run logic at the edge (edge functions). DNS or anycast routes the user to the appropriate node.
## Where It Appears in High-Risk Verticals
In gambling and betting, CDNs are used to load game clients, lobbies, promo banners, and live odds streams. In crypto and fintech projects, they serve wallet front ends, dashboards, and landing pages. In nutra and dating, a CDN is often combined with bot protection and geo-restrictions, allowing different countries to receive different content.
## What It Affects
Loading speed directly affects registration and deposit conversion: the slower a landing page or lobby opens, the higher the bounce rate. A CDN can also hide the real IP address of the origin server, which matters for protection against DDoS and infrastructure attacks. However, if misconfigured, the cache may serve outdated or wrong pages, and CDN geo-rules may unpredictably block legitimate users.
## Common Mistakes
Caching personal data or session-based pages, which lets a user see someone else's account. Failing to invalidate the cache after updating an offer or bonus terms. Blocking traffic by country at the CDN level without accounting for regulator requirements. Setting an overly long TTL for frequently changing files. It is also worth verifying that the CDN does not violate data storage and transfer requirements, such as GDPR when processing traffic from the EU.
FAQ
Does a small landing page need a CDN?
Not necessarily, but CDNs are often enabled to speed up loading and protect against peak loads. For a single low-traffic site, the benefit may be minor.
Does a CDN protect against DDoS attacks?
Partially. A distributed network absorbs part of volumetric attacks and hides the origin server, but full protection requires additional filtering rules and a WAF.
Can a CDN block users by country?
Yes, most providers support geo-rules. They should be configured with licensing and market requirements in mind, otherwise legitimate users may lose access.