Program Restoration via Cross-System Version Sync
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Solution Overview
Problem
Existing information systems face challenges in ensuring safety when replacing a program with a restoration program, especially when there are limited sources of the restoration program available.
Innovation Solution
An information system with a processor that detects abnormalities in its own program and replaces it with the latest available restoration program from other systems, prioritizing the latest version and considering the operational status of the source systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system uses the latest restoration program from available other systems, then safety is improved, but the complexity of selecting and verifying the appropriate restoration program increases
Solution Approach 1:
The system performs preliminary actions by having other systems store their restoration programs in advance and maintain version information. When an abnormality is detected, the processor can directly refer to pre-stored version information to identify the latest restoration program without performing complex real-time analysis, thus improving safety while reducing selection complexity.
Solution Approach 2:
The system implements feedback mechanisms where the processor notifies other systems of abnormalities and receives information about available restoration programs. This feedback loop enables the system to automatically identify and select the latest restoration program based on version information provided by other systems, resolving the contradiction between safety improvement and selection complexity.
2Productivity
If the system replaces the program immediately upon detecting an abnormality, then productivity is improved, but the risk of replacing with an incorrect or incompatible restoration program increases
Solution Approach 1:
The system performs preliminary verification by referring to version information stored in advance by other systems. The processor compares version information before replacement to ensure compatibility and correctness, allowing immediate replacement upon abnormality detection while maintaining low risk through pre-established version verification mechanisms.
3Reliability
If the system waits for processing operations to complete before replacing the program, then reliability is improved, but productivity deteriorates due to delayed restoration
Solution Approach 1:
The system performs preliminary actions by storing restoration programs and their version information in advance in other systems. When an abnormality is detected, the processor can immediately identify the latest restoration program using pre-stored version information and proceed with replacement without waiting for current operations to complete, thus achieving both high reliability and fast restoration.
Data Source
AI summary
An information system includes a processor, in which, when an abnormality has been detected in a program that the system itself possesses, the processor refers to, among restoration programs for the program that the system itself or each of available other systems for the system itself possesses, a latest one of the restoration programs, and replaces the program that the system itself possesses with the latest one of the restoration programs.