Azure, Cloud Computing

3 Mins Read

Quickly Access Web Content using Azure Content Delivery Network

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Overview

We all open websites frequently in our daily life. How fast do you usually get responses from these websites? Have you ever wondered why there is such a significant delay in response? Some pages may load quickly, others may load slowly. There are many potential causes, but in this blog, we will focus on one cause and one action we can take to fix it. Using a CDN, we can shorten the user’s physical distance from our web server and cache our images and other content to speed up the service.

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Introduction

Azure Content Delivery Network (CDN) is a distributed network of servers that allows users to quickly access web content. To reduce latency, CDNs store cached content on edge servers at point-of-presence (POP) locations that are close to end users. All static resources are fetched from the primary server or resource using a CDN and cached for a period. This cached copy is then used to fulfill all user requests for CDN-related resources. Resources are refreshed with new resource requests when the cache expires.

Features of Azure Content Delivery Network

  • Dynamic website acceleration

Today’s content delivered to users is mostly real-time. This is said to be due to the booming social media and e-commerce sector. Content caching for dynamic web applications is not possible in edge locations. This is because the server only generates content in response to user behavior. Therefore, it is usually difficult to accelerate the delivery of such content compared to caching static content. Therefore, when using Azure CDN dynamic website acceleration or DSA optimization, websites with dynamic content tend to perform measurably better.

  • CDN caching rules

It is used to set or modify the default cache expiration behavior globally and with custom conditions such as URL path and file extension. There are two kinds of caching rules available in Azure CDN:

Global Caching Rules: Each endpoint in your profile can have one global caching rule that affects all requests to the endpoint. If any HTTP caching headers are set, the global caching rule will override them.

  •  Custom Caching Rules

You can specify one or more custom caching rules for each endpoint in your profile. Custom caching rules match specific file paths and extensions, are processed in order, and, if configured, override the global caching rule.

  • Custom HTTPS domain support

Azure CDN supports HTTPS by CDN endpoint hostname as the default service offering. This means that if you are creating a CDN endpoint, HTTPS will be automatically enabled in it. Enabling HTTPS over your domain is to ensure that sensitive data is connected over SSL and TLS.

  • Azure diagnostic logs

Azure diagnostics logs help us to export basic usage metrics from your CDN endpoint to various sources so that you can use them however you want.

  • File compression

It increases performance by compressing the files before they are delivered. The receiving browser performs file decompression. If you enable compression for files hosted on your origin server, Azure CDN transmits the compressed files to other servers without alteration.

Uncompressed files on the origin server of a type that can be compressed are dynamically compressed by Azure CDN. Once compressed, the files are then stored on the POP. The user experience and website performance are enhanced by this process.

  • Geofiltration

It allows us to restrict content access by country/region. we can use this feature to create rules for specific routes on the CDN endpoint and we can set rules to allow or block content in selected countries/regions.

Benefits of Azure CDN

  • Better performance for your applications and services
  • Global distributed network
  • Highly scalable infrastructure
  • Active redundancy and failover
  • High reliability
  • Robust security

Parameters to monitor in Azure CDN

When evaluating CDN performance, some of the primary metrics and data to check for include:

  • Throughput
  • Caching
  • Waiting Time
  • Connect Time

Conclusion

Azure CDN is an easy and fast way to get content closer to the user. It also helps to share the web-based content on a global level and using the CDN endpoint users can manage which country or location data can be accessed also has the option to host data on a custom origin domain.

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About CloudThat

CloudThat is a leading provider of Cloud Training and Consulting services with a global presence in India, the USA, Asia, Europe, and Africa. Specializing in AWS, Microsoft Azure, GCP, VMware, Databricks, and more, the company serves mid-market and enterprise clients, offering comprehensive expertise in Cloud Migration, Data Platforms, DevOps, IoT, AI/ML, and more.

CloudThat is the first Indian Company to win the prestigious Microsoft Partner 2024 Award and is recognized as a top-tier partner with AWS and Microsoft, including the prestigious ‘Think Big’ partner award from AWS and the Microsoft Superstars FY 2023 award in Asia & India. Having trained 850k+ professionals in 600+ cloud certifications and completed 500+ consulting projects globally, CloudThat is an official AWS Advanced Consulting Partner, Microsoft Gold Partner, AWS Training PartnerAWS Migration PartnerAWS Data and Analytics PartnerAWS DevOps Competency PartnerAWS GenAI Competency PartnerAmazon QuickSight Service Delivery PartnerAmazon EKS Service Delivery Partner AWS Microsoft Workload PartnersAmazon EC2 Service Delivery PartnerAmazon ECS Service Delivery PartnerAWS Glue Service Delivery PartnerAmazon Redshift Service Delivery PartnerAWS Control Tower Service Delivery PartnerAWS WAF Service Delivery PartnerAmazon CloudFront Service Delivery PartnerAmazon OpenSearch Service Delivery PartnerAWS DMS Service Delivery PartnerAWS Systems Manager Service Delivery PartnerAmazon RDS Service Delivery PartnerAWS CloudFormation Service Delivery PartnerAWS ConfigAmazon EMR and many more.

FAQs

1. Can I determine which Content Delivery Network data center I use to provide services to end users?

ANS: – No. The data center is selected based on the end users’ network configuration and cannot be controlled by the developer. Users may be served by locations preferred by their ISP or nodes that are “closer” in a logical sense, not necessarily in physical proximity.

2. What affects the availability of content in the local content delivery network cache?

ANS: –

  • Expired (“max-age”) header values
  • Total size of developer content library (how much can be cached)
  • Active working set (how much is currently cached)
  • Traffic (how many are served)
  • Cache invalidation (how often objects are cached or aged)

3. How can I reduce the need for frequent origin requests?

ANS: – To reduce the need to make origin requests, you can create a longer max-age header, which allows the Content Delivery Network to keep objects longer.

WRITTEN BY Anusha

Anusha works as Research Associate at CloudThat. She is an enthusiastic person about learning new technologies and her interest is inclined towards AWS and DataScience.

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