Resource-oriented hierarchical name resolution system

Abstract

The invention provides a resource-oriented hierarchical name resolution system, which effectively overcomes the shortcoming of single resolution way for resolving a uniform resource locator (URL) to an Internet protocol (IP) address by the conventional domain name resolution system and perfectly provides support for service combination and service or data transfer. In addition, a local entry updating mechanism of a service identification mapping system (SIDMS) solves the potential problems of mapping entry expansion of a name system; and a multilayer cache mechanism ensures the low resolutiondelay of the name system. The local mapping entry updating mechanism and the multilayer cache mechanism fully present the high expansibility of the SIDMS. The two big problems of uninterrupted services in dynamic and mobile network environments and the fusion of network middleware of the current Internet can be well solved by the SIDMS.

Description

technical field [0001] The invention relates to the technical field of network resources, in particular to a resource-oriented hierarchical name resolution system. Background technique [0002] DNS is the most widely used naming system in the Internet today. It provides Internet users with the most basic domain name resolution service, which is suitable for various applications ranging from load balancing to service discovery. Essentially, DNS is a globally distributed database. There are about 400 million domain name entries stored in it, and there are about several billion records in all storage. The average query delay of current DNS is less than 100ms, and the average number of queries is 1.3 times, which provides a satisfactory system resolution performance at the user level. At the same time, in addition to HTTP and SMTP applications, emerging applications expect to use the ubiquitous DNS infrastructure, such as anti-spam systems will use special DNS records, PKI (p...

AI Technical Summary

Problems solved by technology

On May 19, 2009, the domestic DNS server was attacked by a large-scale DDoS, causing most of the telecommunications network to be paralyzed

[0006] The insecurity of DNS is mainly caused by the system design of DNS. First, DNS relies too much on the top-level domain name server. The top-level domain name server plays a more important role in domain name resolution than ordinary domain name servers. Once the top-level server If a fault occurs, it will have a great impact on the system; secondly, DNS is highly dependent on manual configuration, and manual configuration errors will bring huge hidden dangers to the reliability and security of the system

[0007] Second, the host-oriented parsing mode needs to transition to the resource-oriented parsing mode

HTTP redirection or dynamic DNS can partially solve this problem, but it is not thorough and efficient

[0009] In addition to the above chronic problems, with the increasingly diverse and complex Internet applications, DNS has been unable to cope with the ever-changing and emerging new services. So far, DNS still cannot well support services such as service or data migration, service Combination and other Internet application requirements

At the same time, due to the insufficiency of the original design of the traditional Internet architecture, such as the dual semantics of the IP address (that is, representing the identity of the host and the position of the host in the network), there are serious defects in the support of multi-home and mobility.

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