DNS Server Load Balancing via Dynamic IP List Updates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current DNS server load balancing methods fail to ensure network users are directed to accessible network servers, leading to impaired user experience when allocated servers are down.
Innovation Solution
Implementing a network server status monitoring module that updates the DNS server's IP list by removing or marking as invalid the IP addresses of inaccessible network servers, and selecting an IP address from valid ones to direct network users to functional servers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the DNS server allocates network users to network servers using a static IP list, then the load balancing is simple to implement, but the system reliability deteriorates when network servers go down
Solution Approach 1:
The system performs preliminary actions by monitoring network server status and proactively updating the IP list before users are affected. The DNS server receives status information about network servers and deletes IP addresses of servers that are down or cannot provide services, ensuring that users are never directed to unavailable servers.
Solution Approach 2:
The system implements feedback mechanisms where the DNS server continuously receives status information from network servers and adjusts the IP list accordingly. This feedback loop ensures that the load balancing configuration remains synchronized with the actual operational status of network servers, maintaining high reliability.
2Ease of operation
If the DNS server maintains a static IP list without monitoring, then the system operation is simple, but the service quality deteriorates due to user allocation to unavailable servers
Solution Approach 1:
The system implements self-service by having network servers automatically send status information to the DNS server. Servers that are down or cannot provide services autonomously notify the DNS server, which then updates the IP list without requiring manual intervention, maintaining operational simplicity while ensuring service quality.
Solution Approach 2:
The DNS server performs preliminary updates to the IP list by receiving and processing status information before users are affected. This proactive approach ensures that unavailable servers are removed from the load balancing configuration in advance, preventing user allocation issues.
3Reliability
If the DNS server uses dynamic IP list updates based on server status, then the user access reliability is improved, but the system complexity increases
Solution Approach 1:
The system segments the load balancing functionality into distinct components: network servers that generate status information, a DNS server that processes and stores the IP list, and automatic update mechanisms. This segmentation allows each component to operate independently with well-defined interfaces, managing complexity while maintaining reliability.
Solution Approach 2:
The DNS server acts as an intermediary between network servers and users. It receives status information from servers, maintains the IP list, and provides load balancing decisions to users. This intermediary role centralizes the complexity of dynamic updates while keeping the overall system architecture simple and manageable.
Data Source
AI summary
Embodiments of the present invention provide a method, system and DNS server for load balancing network servers. The method includes: monitoring whether each network server is capable of providing a network service, deleting an IP address of a network server which is incapable of providing a network service from an IP list in a DNS server or setting the IP address as invalid in the IP list according to a monitoring result; receiving, by the DNS server, a request from a network user for accessing a network server, selecting an IP address from valid IP addresses in the IP list which corresponds to the request; providing, by a network server having the selected IP address, network services for the network user.