Cloud DVR Segment Caching for Shared Recording Storage
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Solution Overview
Problem
Cloud DVR systems face challenges in efficient storage and retrieval of recorded content due to the need to store individual copies for each user, despite the content being virtually identical, leading to increased storage and retrieval demands.
Innovation Solution
Content items are divided into segments, which are further grouped into bundles, allowing for efficient storage and retrieval through caching mechanisms, including linked lists and metadata management to optimize cache usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual copies of recorded content are stored for each user as required by legal and regulatory requirements, then compliance with legal and regulatory requirements is achieved, but storage space consumption increases significantly
Solution Approach 1:
The patent merges multiple identical content items into a single shared copy in storage. Instead of storing separate copies for each user, the system stores one copy that can be accessed by multiple users, thereby reducing storage space consumption while maintaining compliance with legal and regulatory requirements through proper access control and user-specific metadata
Solution Approach 2:
The patent implements a universal storage mechanism where a single stored content item serves multiple users simultaneously. The storage system is designed to handle multiple user requests for the same content through a unified storage structure, eliminating the need for redundant copies and optimizing storage resource utilization
2Reliability
If individual copies of recorded content are stored for each user, then legal and regulatory compliance is ensured, but retrieval time increases due to larger storage volumes
Solution Approach 1:
By merging multiple content items into a single shared storage location, the system reduces the total volume that needs to be searched during retrieval operations. This single-copy approach with intelligent indexing significantly decreases retrieval time compared to searching through multiple separate user-specific copies
Solution Approach 2:
The system performs preliminary organization of content items into bundles with proper metadata and indexing structures before retrieval is needed. This preliminary arrangement enables rapid location and access of specific content segments without requiring linear search through large storage volumes
3Productivity
If content items are divided into bundles and stored, then storage efficiency is improved, but system complexity increases due to bundle management
Solution Approach 1:
The patent segments content items into smaller bundles that can be efficiently stored and retrieved. This segmentation allows for better storage space utilization and faster access to specific segments without requiring manipulation of entire large content files, thereby improving storage efficiency while keeping bundle management complexity manageable through systematic organization
Data Source
AI summary
Methods and apparatus are disclosed for efficient storage and retrieval of content items, such as recorded content items of a cloud DVR system or other system storing content items.