Local Caching Servers Using Listen Ranges for LAN Content Delivery
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Solution Overview
Problem
The increased demand for digital content delivery to multiple electronic devices can overwhelm school Internet connections, leading to bandwidth limitations, excessive costs, and restricted network access due to large file sizes of content like digital textbooks.
Innovation Solution
Implementing a system that uses local caching servers and 'listen ranges' to enable electronic devices to acquire content from local area networks rather than the Internet, allowing client devices to request and retrieve identifiers for local caching servers from a registration server, thereby reducing the load on Internet connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If content is delivered to multiple electronic devices via Internet connection, then content delivery capability is improved, but network bandwidth consumption increases and Internet access becomes restricted
Solution Approach 1:
The system segments content delivery into two paths: Internet-based delivery for initial content acquisition and local LAN-based delivery for subsequent distribution. Local caching servers are deployed at multiple sites to handle local distribution, separating the heavy bandwidth consumption from the Internet connection and confining it to local networks.
Solution Approach 2:
Local caching servers act as intermediaries between the Internet and electronic devices. These servers receive content via Internet connection and then serve local devices through LAN, mediating the content delivery process to protect the Internet connection from direct bandwidth stress.
2Productivity
If large files such as digital textbooks are downloaded to electronic devices, then content acquisition is improved, but Internet bandwidth capacity is exceeded and costs increase
Solution Approach 1:
Content is downloaded to local caching servers in advance before being distributed to multiple devices. The caching servers pre-acquire large files like digital textbooks via Internet connection, so when devices need the content, it is already available locally, eliminating repeated Internet downloads.
Solution Approach 2:
The system creates local copies of content on caching servers and distributes these copies to multiple devices. Instead of each device downloading the original content from the Internet, devices receive copies from local servers, preserving the original content source while enabling efficient local distribution.
3Adaptability or versatility
If multiple devices access content simultaneously over the same Internet connection, then content delivery coverage is improved, but network access performance deteriorates
Solution Approach 1:
The system adds a spatial dimension to content delivery by deploying caching servers at multiple physical locations. Devices can access content from the nearest local server rather than all devices competing for a single Internet connection, effectively distributing the network load across different geographic locations.
Data Source
AI summary
In the described embodiments, local caching servers (LCSs) are configured to cache content so that the content can be acquired by client electronic devices that are located on local area networks (LANs) with the LCSs. In some embodiments, to enable the acquisition of the cached content, a client electronic device sends, to a registration server, a request for identifiers for LCSs that are located on a LAN with the client electronic device. The request includes one or more “listen ranges,” each of which includes an indication of client electronic devices for which a corresponding LCS is to provide content. The registration server uses the listen ranges to select one or more LCSs, and returns identifiers for the one or more LCSs to the client electronic device. Using the one or more identifiers, the client electronic device acquires the content from an LCS via the LAN.