Zhongzhou Zhao
Staff Algorithm Engineer & Tech Leade at Alibaba Group
Lombardy, Italy
Summary
🤩
Rockstar🎓
Top SchoolZhongzhou Zhao is a Staff Algorithm Engineer and tech lead based in Lombardy, Italy, with eight years of experience building robust back-end systems and distributed datastores. At Alibaba he has driven replication, persistence and data-integrity improvements in large-scale caching and database code paths, combining hands-on C-level systems work with architectural leadership. His sustained open-source contributions to high-profile projects such as Redis and KeyDB demonstrate deep expertise in replication, AOF durability, and fixing subtle memory- and consistency-related bugs that matter in production. Colleagues rely on him to untangle edge-case failures during master restarts and to harden persistence layers under heavy load. He pairs an applied research background from Harbin Institute of Technology and advanced studies in Pavia with a practical history of shipping mission-critical systems at Alibaba. An often-overlooked strength is his focus on code-level resilience: many patches show attention to corner cases that prevent rare but catastrophic data loss.
8 years of coding experience
5 years of employment as a software developer
Master's degree, Computer Engineering, Master's degree, Computer Engineering at Università degli Studi di PaviaMaster's degree, Computer Engineering, Master's degree, Computer Engineering at Harbin Institute of Technology
Github Skills (20)
go-modules10
back-end-development10
redis10
databases10
data-persistence10
kernel-module10
c-programming10
c1110
data-structure10
c1710
performance-optimization10
data-structures10
jsmodules10
replication10
relational-databases10
Programming languages (7)
Github contributions (5)
alibaba/ApsaraCache
Sep 2017 - Dec 2017
ApsaraCache is a Redis branch originated from Alibaba Group.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:19 commits, 1 PR, 1 push in 2 months
Contributions summary:Zhongzhou primarily contributed to the back-end functionality of the ApsaraCache project, focusing on replication, module handling, and core server processes. The commits demonstrate expertise in optimizing replication mechanisms, specifically addressing scenarios in PSYNC2 and RDB. They also enhanced module management and fixed data integrity issues.
redisredisearchalibabaredis-servermemcached
Snapchat/KeyDB
Sep 2017 - Sep 2021
A Multithreaded Fork of Redis
Role in this project:Back-end Developer
Back-end DeveloperContributions:282 commits in 4 years
Contributions summary:Zhongzhou contributed significantly to improving the KeyDB project's replication and persistence mechanisms. They made several changes to ensure the more reliable storage of replication information within RDB files, especially concerning the interaction of slaves and masters during various states. Additionally, the user addressed memory leaks related to slowlog entries and corrected several issues regarding data consistency in AOF and ZSET commands. These changes focused on enhancing data durability and stability.
redisscaleleveldbgeohashredis-server
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