Review ran03's paper

Shuping ran. A model for Web Services Discovery with QoS. ACM sigecom exchanges, 4 (1): 1-10,200 3. (ACM sigecom: Special Interest Group on Electronic Commerce) (GS: 310)
This is one of the first papers to introduce QoS into web services. The author mentioned in this article that "Web Services technology is now over two years old. ", it is estimated that the Web Service should start from 00 and 01. the definition of Web Service on Wikipedia references W3C: "A software system designed to support interoperable machine-to-machine interaction over a network"
This article focuses on: (1) introduced the Web service QoS certifier role to verify the QoS credibility generated by providers, and introduced how to expand UDDI to support QoS (2) the classification of web service QoS is discussed.
Read this article now Article Of course, it will be very simple and there are many aspects to be improved. For example, QoS verification is performed before this model is registered with WS, but the QoS of WS will change dynamically; if certifier is centralized, there will be efficiency problems when there are too many ws.

This document classifies QoS as follows:
(1) runtime related QoS
Scalability
Capacity
Performance (response time, latency, throughput)
Reliability
Availability
Robustness/flexibility
Exception Handling
Accuracy
(2) transaction support related QoS
Integrity
(3) configuration management and cost related QoS
Regulatory
Supported Standard
Stability/change cycle
Cost
Completeness
(4) security related QoS
Authentication
Authorization
Confidentiality
Accountability
Data Encryption
Non-Repudiation