Junchang Chang
Site Reliability Engineer at PingCAP
Haidian District, Beijing, China
Summary
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Rockstar🎓
Top SchoolJunchang Chang is a Site Reliability Engineer with 16 years’ experience building and operating cloud-native platforms, specializing in PaaS, DBaaS, Docker, Kubernetes and Go. Based in Haidian, Beijing, he has driven reliability and deployment automation at PingCAP—contributing to the widely used TiDB Operator by refactoring PD member management and adding TLS support—and previously led infrastructure and backend work for high-traffic B2C sites. He combines deep operational know-how with hands-on engineering, from designing MySQL performance improvements to implementing auto-deploy systems. Trained originally in psychology, he brings a pragmatic, user-focused approach to system design and incident resolution.
15 years of coding experience
9 years of employment as a software developer
Psychology, Psychology at Northeast Normal University
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (12)
tidb10
mtls10
kubernetes10
go10
tls1210
back-end-development10
tls1310
kubernetes-pods10
libtls10
operator10
refactor9
refactoring9
Programming languages (7)
Github contributions (5)
pingcap/tidb-operator
Jul 2018 - Sep 2020
TiDB operator creates and manages TiDB clusters running in Kubernetes.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:21 releases, 13 reviews, 249 commits in 2 years 2 months
Contributions summary:Junchang implemented a member manager interface and extracted the main logic from the existing code. They refactored code into the `MemberManager` interface, specifically focusing on the `pd_member_manager.go` file, indicating contributions to the management of PD (Placement Driver) members within the TiDB cluster. The changes involve extracting main logic to the MemberManager interface, improving code maintainability and potentially streamlining the management of the PD component. They added support for TLS, and the code changes directly relate to the deployment configuration.
golangtidbclustersoperatorkubernetes
weekface/vimfile
Jan 2013 - Jul 2017
Contributions:101 commits, 41 pushes in 4 years 6 months
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