Edge Streaming Cache for Low-Latency Interactive Content Sharing
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Solution Overview
Problem
Existing content streaming systems for interactive content, such as videogames, suffer from high latency due to geographical separation between primary servers and users, as edge servers cannot generate content in real-time in response to user inputs, and deploying additional primary servers is not feasible.
Innovation Solution
Implement an edge-server system that caches pre-recorded or predictable content, reduces data streaming from primary servers by caching interactive content components, and offloads rendering tasks, optimizing data transmission paths to minimize latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If edge servers are deployed to cache content from primary servers, then latency is reduced for users, but the edge servers cannot generate interactive content in real-time in response to user inputs
Solution Approach 1:
The system segments content into static/cacheable components and dynamic/interactive components. The edge server caches and delivers static content locally, while the primary server generates dynamic content in response to user inputs. This segmentation allows the edge server to reduce latency for static content without needing real-time generation capabilities.
Solution Approach 2:
The edge server acts as an intermediary between the primary server and the user. It receives and caches content from the primary server, then delivers it to users with minimal latency. For interactive content, it forwards user inputs to the primary server and relays the generated content back, mediating between the user's need for low latency and the primary server's real-time generation capability.
2Productivity
If primary servers are geographically located close to service providers, then content delivery is efficient, but users at significant distances experience unwanted latencies
Solution Approach 1:
The system implements local quality by deploying edge servers in regional locations closer to users. These edge servers cache content locally, providing fast delivery to regional users without requiring the primary server to be geographically close to all users. Each edge server optimizes content delivery for its local region.
Solution Approach 2:
The system adds a spatial dimension to content delivery by distributing edge servers across multiple geographic locations. Instead of a single centralized primary server, content is delivered from multiple regional edge servers, reducing the physical distance and latency for users in different geographic regions.
3Ease of manufacture
If edge servers act as passive stores for cached content, then they work well for non-interactive content, but they appear as simple forwarding nodes for interactive content without reducing latency
Solution Approach 1:
The edge server implements dynamic content delivery by detecting whether content is static or interactive. For static content, it acts as a simple cache. For interactive content, it dynamically forwards user inputs to the primary server and relays the generated content back, adapting its behavior to the content type to minimize latency.
Solution Approach 2:
The edge server is designed with multi-functionality to handle both static cached content and dynamic interactive content. It can operate as a simple cache for non-interactive content while also serving as an active intermediary for interactive content, making it universally applicable to different content types without requiring separate systems.
Data Source
AI summary
An interactive content distribution system comprises an edge server configured to receive interactive content streamed from a primary server, and stream it to a client device, the edge server being configured to receive data streamed from the client device, the edge server being configured to have the interactive content stream and the video camera feed stream composited together to generate a sharing stream, and the edge server being configured to have the sharing stream distributed to one or more spectator devices.