Hao Tang
Software Engineer at ByteDance
Beijing, China
Summary
🤩
Rockstar🎓
Top SchoolHao Tang is a software engineer with nine years of experience specializing in JVM internals, memory management, and backend systems, currently at ByteDance after four years at Alibaba. He holds a PhD in Computer Science from Peking University and has deep hands-on expertise in open-source JDK work—contributing to Alibaba Dragonwell8 and Dragonwell11 on ZGC, tenant heap isolation, and GC logging enhancements. His contributions show a focus on system-level optimizations, merge-level conflict resolution, and adding native integrations for multi-tenant memory isolation. Comfortable at the intersection of research and production, he brings academic rigor to shipping reliable runtime features used in large-scale cloud environments.
9 years of coding experience
5 years of employment as a software developer
Doctor of Philosophy (PhD), Computer Science, Doctor of Philosophy (PhD), Computer Science at Peking University
Chinese, Chinese
Github Skills (12)
javas10
memory-management10
openjdk10
multitenancy10
oraclejdk10
jdk1710
java10
multi-tenant10
garbage-collection10
performance-optimization9
version-control9
git9
Programming languages (4)
Github contributions (5)
dragonwell-project/dragonwell11
Sep 2019 - Jun 2022
Alibaba Dragonwell11 JDK
Role in this project:
Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:1 release, 45 reviews, 182 commits in 2 years 9 months
Contributions summary:Hao primarily contributed to the Alibaba Dragonwell11 JDK, focusing on ZGC-related components. Their work involved merging specific JDK tags, which often included code changes related to garbage collection. The user also addressed conflicts arising from merges and updated version information. Furthermore, the commits reveal a focus on system-level optimizations and memory management, demonstrating involvement in core runtime aspects.
ltsjdkalibabaopenjdkjava
dragonwell-project/dragonwell8
Mar 2020 - Dec 2020
Alibaba Dragonwell8 JDK
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 7 commits, 1 comment in 9 months
Contributions summary:Hao primarily contributed to the Alibaba Dragonwell8 JDK, specifically focusing on the implementation of multi-tenant heap isolation and throttling features. Their work involved porting existing features, as evidenced by the commit messages and code differences. The user also introduced changes to support the TenantHeapIsolation functionality by modifying the `TenantContainer` and `NativeDispatcher` classes and adding new native methods. Furthermore, the user added support for printing the tenant ID in GC logs.
ltsdragonwell8jdkalibabajava8
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