Hierarchical Resource Information System with Dynamic Collection Intervals
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Solution Overview
Problem
In a resource information providing system with hierarchized apparatuses, ensuring the freshness of resource information reaching a search request source is challenging, and existing systems fail to adjust the freshness and reduce collection load effectively.
Innovation Solution
The system adjusts the collection interval of resource information by determining the maximum elapsed time from acquisition to arrival at the request source and shortening it when exceeding the maximum allowable elapsed time, allowing for hierarchical selection of apparatuses to reduce the collection interval and optimize freshness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource information is collected periodically from management target systems, then the system can maintain updated information, but the collection load increases and freshness cannot be guaranteed in hierarchical systems
Solution Approach 1:
The patent applies dynamics by making the collection interval adjustable rather than fixed. The management system dynamically modifies collection intervals based on the elapsed time calculated from the last collection point, allowing the system to adapt to varying freshness requirements and reduce collection load when information is already up-to-date.
Solution Approach 2:
The patent changes the parameter of collection interval based on calculated elapsed time. When the elapsed time since last collection is long, the system extends the collection interval to reduce load. When elapsed time is short, the system maintains or shortens the interval to ensure freshness, thus optimizing the balance between reliability and productivity.
2Reliability
If collection interval is shortened to ensure freshness, then information arrives at request source within required time, but collection load increases
Solution Approach 1:
The system dynamically adjusts the collection interval parameter based on the calculated elapsed time. When elapsed time is large, the interval is extended to reduce collection frequency and load. When elapsed time is small, the interval is shortened or maintained to ensure freshness requirements are met, optimizing the trade-off between information freshness and collection burden.
Solution Approach 2:
The system uses feedback from the elapsed time calculation to adjust future collection intervals. The elapsed time is calculated based on the last collection timestamp and current time, providing feedback that informs the next collection decision, creating a closed-loop system that adapts to actual information freshness needs.
3Quantity of substance
If resource information is collected from many distributed systems, then comprehensive information is gathered, but the complexity of managing collection schedules increases
Solution Approach 1:
The patent segments the collection management by grouping resource information according to the type of management target system. Each group can have its own collection schedule and elapsed time tracking, simplifying the overall management complexity while still gathering comprehensive information from multiple distributed systems.
Solution Approach 2:
The system uses a unified parameter approach where collection intervals are adjusted based on elapsed time calculated from the last collection point. This standardized parameter change mechanism simplifies schedule management across different system types compared to managing separate fixed schedules for each system.
Data Source
AI summary
In a resource information providing system in which resource information providing apparatuses which periodically collect pieces of resource information of a management target apparatus and stores the pieces of information in a cache are hierarchized, when an elapsed time specifying request specifying maximum allowable elapsed time with respect to the resource information is input from a request source which requests the resource information, the resource information providing apparatus obtains the maximum elapsed time from acquisition of the resource information by the management target apparatus until arrival thereof to the request source and determines whether it is exceeding the maximum allowable elapsed time input from the request source or not. If it is exceeding, the resource information providing apparatus shortens the collection interval thereof by the time obtained by subtracting the maximum allowable elapsed time from the maximum elapsed time.