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In the Limelight Blog

2 Posts authored by: chris.nave

This is the second blog in the ARC Light series showcasing the capabilities of Computed Edge Policies. The introduction blog presented an overview of ARC Light, and included a few examples of use cases built around geolocation data. The second blog covered Origin Selection, and this blog will discuss user request modification.

 

Multinational companies inevitably have to solve for language support on their front end. There are many facets to the issue. From translating content to UI/UX work to account for the translated content. It’s a project that requires a lot of time and money. How will the front end know when to serve the appropriate language to the user? It may be an easy question to answer for existing users, but for new visitors, it's a different story.

 

Language Selection by Geographical Location

 

Language selection becomes easy when out-of-the-box CDN functionality is extended by ARC Light. The Limelight CDN provides geographical location information on every request. ARC Light extends the ability of the CDN to modify request headers in real time. A query string or header information can be automatically added to the request so the front end knows which language to display to the user. The CDN maintains the Geo database for actionable data. ARC Light manages the compute layer for modifying the request.

 

Advanced Request Configuration

 

This is a basic example of a request modification using ARC Light. ARC Light has the ability to evaluate any data available within the request header such as URLs, query strings, hostnames, cookies, IP addresses, or custom header data. Complex uses can then be solved within the Advanced Request Configuration to modify any portion of the header using predefined business logic. Simple, Quick, Compute at the edge.

 

More to Come

 

Over the next couple of weeks, several more blogs will be posted highlighting a specific ARC Light use case. Return to this site to read about more ARC Light capabilities.

This is the first blog in the ARC Light series showcasing the capabilities of Computed Edge Policies. The introduction blog presented an overview of ARC Light, and included a few examples of use cases built around geolocation data.

 

We often receive requests from customers with a need to implement custom business logic for selecting the appropriate Origin. Origin selection logic for a subset of traffic based on predefined criteria is a standard use case. These needs are typically fulfilled by out of the box configuration options within the CDN. In some cases, we encounter a need for origin selection based on complex set of rules. ARC Light extends the standard configuration options of the CDN for these cases.

 

Device Updates by Geographical Location

 

A use case we recently encountered for a mobile device manufacturer required directing traffic to alternate origins for software updates depending on the user’s software version and geographical location. The manufacturer maintains origins in the Americas, Europe, and APAC where some are tuned for delivering larger software updates and others are tuned for delivering smaller updates.  

 

ARC Light solves the problem by executing complex business logic at the edge. The Advanced Request Configuration detects the user’s software version by evaluating multiple pieces of data included within the request header. The CDN automatically generates geographical data for the user upon request. ARC Light combines the version information and geographical data to determine the appropriate origin using the predefined business logic if not served directly from cache.   

 

Speedy Deployment of Powerful Configurations

 

ARC Light provides the flexibility to utilize actionable data included in the header such as URLs, Cookies, Query Strings, and Custom tags to apply logic in real time. Configurations are versatile yet quickly built and deployed across the network to provide a powerful tool for origin selection.

 

More to Come

 

In the next couple of weeks several more blogs will be posted highlighting a specific ARC Light use case. Return to this site to read about more ARC Light capabilities.