Freeman Zhang
ERP DBA at 广州赛意信息科技股份有限公司
China
Summary
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RockstarFreeman Zhang is an ERP DBA with 11 years of hands-on IT and database experience, currently ensuring stability and performance at 广州赛意信息科技股份有限公司. He has deep operational expertise in ERP architecture, Oracle PeopleSoft migrations, 7x24 system maintenance, backup and disaster recovery, and performance monitoring from roles spanning service providers to enterprise IT. Freeman contributes to high-performance analytics infrastructure as a backend developer on Apache Doris, focusing on stability fixes, compaction improvements, and memory/IO problem resolutions—work that underscores his attention to reliability at scale. Comfortable across database servers, application stacks, and network/security operations, he combines day-to-day ops discipline with code-level problem solving. Based in China, he pairs pragmatic system administration with open-source experience that improves production robustness in complex enterprise environments.
11 years of coding experience
Github Skills (12)
olap10
databases10
debug10
apache-doris10
c-language10
cprogramming-language10
database10
data-engineering9
pac9
performance-optimization9
pact9
sql8
Programming languages (11)
Github contributions (5)
apache/doris
Jan 2022 - Jan 2023
Apache Doris is an easy-to-use, high performance and unified analytics database.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:299 reviews, 22 commits, 188 PRs in 11 months
Contributions summary:Freeman primarily focused on enhancing and fixing issues within the backend of the Apache Doris database. Their contributions include improving error messages for delta writer failures, fixing OOM issues related to the sink send, and resolving problems related to incomplete error messages during vectorized loads. Additionally, the user addressed code regressions and implemented improvements to compaction. These changes suggest a focus on improving stability and performance.
dbmsapache-dorisdbtreal-timehudi
freemandealer/freemandealer.github.io
Oct 2015 - Jul 2022
Contributions:71 commits, 124 pushes in 6 years 10 months
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