Huaxin Zhang

Title: Huaxin Zhang: Innovator in Distributed Database Technologies

Introduction

Huaxin Zhang is a prominent inventor based in Markham, Canada. He has made significant contributions to the field of distributed database technologies, holding a total of 7 patents. His work focuses on improving transaction management systems, particularly in environments that require synchronization across multiple nodes.

Latest Patents

One of Huaxin Zhang's latest patents is titled "Global clock overhead with asymmetric waiting time." This invention outlines a method, apparatus, and system for assigning a commit sequence number (CSN) to a WRITE transaction in a network with nodes and a global time server. The CSN is defined by a timestamp of the WRITE transaction and an error bound of the timestamp. The WRITE transaction is committed after the timestamp is issued and an amount of time equal to the error bound plus a time adjust value has passed. The time adjust value is based on round-trip times between the nodes and the global time server. By waiting for the specified time, any READ transaction occurring after the WRITE transaction can receive a READ timestamp without delay, provided the READ timestamp error bound is less than or equal to the time adjust value.

Another significant patent is focused on "Systems and methods for a distributed database to transition between centralized transaction management and global clock transaction management with little to no downtime." This invention describes a system and method for an online transaction system to transition between two operational modes. In the first mode, transaction nodes identify transactions with sequential numbers from a global transaction server (GTS). In the second mode, they use timestamps based on global clock servers (GCSs). The transition process involves a controller that instructs transaction nodes to provide GCS-based transaction timestamps and error bounds to the GTS, which modifies them based on previously received data. This ensures that each transaction is timestamped accurately, although there is a delay equal to the modified error bound before requesting another modified timestamp.

Career Highlights

Huaxin Zhang is currently employed at Huawei Technologies Co., Limited, where he continues to innovate in the field of database management systems. His work has been instrumental in enhancing the efficiency and reliability of transaction processing in distributed environments.

Collaborations

He has collaborated with notable colleagues, including Yuk Kuen Chan and Wenbin Ma, contributing to various projects that push the boundaries of technology in their field.

Conclusion