Slave Server Synchronization for VOD Content Delivery
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Solution Overview
Problem
Traditional Video On Demand (VOD) architectures face challenges such as complexity, high costs, and excessive data traffic due to the reliance on caching mechanisms, which can lead to download interruptions and limited customization capabilities.
Innovation Solution
A method that synchronizes a slave server with a master server to ensure that multimedia content is available on both servers, allowing the slave server to provide the content directly to user terminals, thereby reducing data traffic and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If caching servers continuously download high quality video contents from the VOD server, then content availability is improved, but data traffic and network bandwidth consumption increase significantly
Solution Approach 1:
The slave server performs preliminary synchronization with the master server to obtain multimedia content in advance, before user requests arrive. This allows the slave server to have content ready locally, eliminating the need for continuous downloading triggered by user requests, thus reducing network traffic while maintaining content availability.
Solution Approach 2:
The system divides the VOD service into multiple slave servers distributed across different locations, each synchronizing with the master server independently. This segmentation allows content to be distributed closer to users, reducing the bandwidth burden on any single network connection between the master server and individual slave servers.
2Loss of energy
If caching servers are deployed to reduce network traffic, then bandwidth consumption decreases, but system complexity and cost increase
Solution Approach 1:
The slave server is designed with multi-functionality, serving both as a cache server for content delivery and as a synchronization target from the master server. This universal design consolidates multiple roles into a single component, reducing overall system complexity compared to having separate caching and content management systems.
Solution Approach 2:
Instead of implementing complex caching algorithms and temporary storage hierarchies, the system uses simple copying of multimedia content from the master server to slave servers. This copying approach maintains content availability while significantly simplifying the system architecture and reducing operational complexity.
3Device complexity
If a single portal interface is used to access the VOD server, then system simplicity is maintained, but customization capability is limited
Solution Approach 1:
The system segments the portal interface functionality by distributing slave servers across different geographical locations or regions. Each slave server can be customized for its specific region while maintaining a consistent core interface, allowing country-by-country customization without requiring a completely different system architecture for each region.
Solution Approach 2:
The slave servers are configured with local quality characteristics, allowing each regional slave server to have customized content, language, or interface preferences specific to its location, while still maintaining the overall simplicity of the single-portal access model through the slave server network.
Data Source
AI summary
A method for providing to a user terminal a target multimedia content belonging to a first set of multimedia contents available at a master server is disclosed. The method includes, performed by a processing unit of a slave server connected to both the user terminal and the master server through a network, synchronizing (a) the slave server with the master server so that each multimedia content of the first set of multimedia contents available at a master server is also available at the slave server; and providing (b) the target multimedia content to the user terminal from the slave server.