Jingyu Jack
Senior Technical Account Manager at Amazon Web Services (AWS)
Singapore
Summary
🤩
Rockstar🎓
Top SchoolJingyu (Jack) is a database-focused infrastructure engineer with 12 years of industry experience, currently driving professional services at PingCAP from Sunnyvale. He spent five years working with Oracle and three years specializing in the cloud-native NewSQL TiDB, contributing bug fixes and performance improvements to core TiDB, parser, and TiKV client libraries. His work often targets tricky executor and transaction issues—improving memory usage, index creation, and write-conflict handling—showing a knack for low-level correctness and efficiency. Jack has progressed through technical support and solutions architecture into hands-on service engineering, blending customer-facing problem solving with deep backend expertise. He holds a bachelor's in Automation and brings an unusual combination of presales experience and open-source contributions to large distributed database projects.
12 years of coding experience
8 years of employment as a software developer
学士 自动化, 学士 自动化 at Shenyang University of Technology
English, Chinese
Stackoverflow
11reputation
283reached
2answers
0questions
Github Skills (27)
transaction10
sql-parser10
mysql10
databases10
tikv10
transactionscope10
go10
sql10
performance-optimization10
error-handling10
transaction-manager10
relational-databases10
index-management10
sql-database10
database10
Programming languages (12)
Github contributions (5)
pingcap/parser
Mar 2019 - Sep 2021
A MySQL Compatible SQL Parser
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 10 commits, 56 PRs in 2 years 7 months
Contributions summary:Jingyu contributed to the MySQL compatible SQL parser by addressing write conflict errors and related issues. They added error codes and messages, specifically for write conflicts. Furthermore, the user worked on incorporating support for select for update and adding support for alter table read only/write operations.
mysqlsql-parser
pingcap/tidb
Jun 2017 - Nov 2022
TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, analytics, and vector search. No data silos. No noisy neighbors. No infrastructure ceiling.
Role in this project:Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:5 releases, 529 reviews, 453 commits in 5 years 5 months
Contributions summary:Jingyu primarily contributed to bug fixes and enhancements in the TiDB database system, focusing on improving executor functionality and addressing errors related to various data types and operations. Their work involved resolving issues in areas such as handling hexadecimal and binary data, fixing comments in selection fields, and implementing features for index creation. These contributions also included improvements in performance and memory usage for insert and update statements.
agentictidbvector-searchdistributed-databasedistributed-transactions
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