CDN is a distributed network and storage service with which we can optimize web content around the world. This applies to various files (HTML, CSS, JS, video files, and others). Using a CDN allows you to display content from their servers instead of the base server, which reduces the chance of display delays, infrastructure overload, or traffic served by their technical resources.
CDNs can also act as proxies between the provider and the end-user. In this context, we can purchase numerous network solutions, such as load balancing, firewalls, automatic HTTPS protocol.
CDN – what is the use of this solution?
CDNs offload traffic from servers, reducing the overall burden on the infrastructure. They are also optimized for speed, which from the technical side has consequences for better SEO display. Since CDNs store data in centers located worldwide (PoP), they move content geographically closer to users. This can significantly reduce request display latency for some users and avoid downtime due to datacenter failures.
CDN network – how does it work?
The CDN provider uses an extensive network of data centers located in various geographical points (PoP – points of presence). Each such site can act as a hosting source delivering content to the end-user. The CDN, taking into account several variables, decides from which PoP to provide the requested (usually from its cache) resources to the destination. The most important elements include network load, distance, and connection speed.
For the PoP to have the required resources in the cache, manual resource push is used, where the content must be sent to the CDN in advance (the method gives more control over what content is shared by the CDN). You can also use automatic CDN download (download), where it downloads content that has not yet been cached. The CDN gets the latest version of the content from the origin server. After a while, the cached content expires, and the CDN refreshes it from the beginning on the next request.
What should you consider when choosing a CDN?
Although CDN networks operate similarly to each other, they differ in terms of individual elements and offer. The most important are:
- Availability and reliability – CDN networks strive for full uptime. However, full (100%) availability of the service cannot be guaranteed. The question here is what availability and the method of its delivery the project needs. Take a closer look at the PoP response time for the regions you are interested in and prepare the emergency options.
- PoP Locations – Depending on where your users are located, some PoPs will be more suited to your project than others. Choose a CDN that manages PoPs close enough to the users to deliver the service without incurring too high costs effectively.
- Price and its variants – most CDN networks charge fees due to the bandwidth offered, the number of storage, or the number of hits in the cache. Please consider how prices differ due to the distribution of PoP, or maybe they are globally uniform. When making your decision, estimate your bandwidth requirements and projected growth to find the best deal.
How do I start using CDN in BlazingCDN?
The process of adding a CDN to your site depends on where and how it’s hosted. When working with BlazingCDN, it all starts with creating an account. If you want to know more details on this, please see the essential information about it: https://blazingcdn.com/knowledgebase/kb/get-started/
You will have some other questions. You will find answers to them at the following links:
- Start by setting up your account and checking its capabilities: https://blazingcdn.com/knowledgebase/kb/account-settings/
- We have collected all relevant data in our knowledge base: https://blazingcdn.com/knowledgebase/
- Of course, your project would not run smoothly if it were not for the most important, generally available tools. We have prepared appropriate integrations for them: https://blazingcdn.com/knowledgebase/kb/instegrations/
- To feel the difference with BlazinCDN, do your performance test before and after service integration. If you want to know more, please see here: https://blazingcdn.com/website-performance-testing/
How to start using CDN – summary
CDN networks are a solution, thanks to which it is possible to increase resource efficiency without significantly increasing costs or internal infrastructure. From the customer’s perspective, the most challenging thing is to choose a supplier who offers complementary solutions for a given project at affordable prices. Here, in addition to standard variables, it is worth considering security or integrations available in a given CDN. You will observe a change in performance thanks to performance tests. In addition to running one-off tests, you can use the tools to schedule periodic checks to ensure your website is always performing at its best.