geffzhang
Chief Technology Officer at ai4c.cn
Shenzhen, Guangdong Province, China
Summary
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Rockstargeffzhang is a seasoned Chief Technology Officer based in Shenzhen with 13 years of experience building resilient, cloud-native backend systems and microservice frameworks. He combines hands-on engineering and DevOps expertise—contributing to notable open-source projects like Ocelot (.NET API Gateway) and Magicodes.IE—focusing on reliability patterns (Polly circuit breaker), high-volume data exports, and API gateway management. Recognized as a Microsoft MVP and cloud evangelist across Tencent and Huawei ecosystems, he blends practitioner-level coding with platform strategy. His work shows a pragmatic emphasis on testability and operational readiness, from build scripts and CI tweaks to rate-limiting and Kestrel configuration. Uncommonly, he balances deep protocol-level improvements with user-facing scalability features, such as splitting million-row Excel exports across sheets.
13 years of coding experience
Github Skills (31)
net10
dotnet10
data-export10
asp-net-core10
datatable10
datatables10
asp-net10
api-gateway10
excel10
dotnet-core10
imports10
netcore10
exports10
csharp10
polly10
Programming languages (24)
Github contributions (5)
ThreeMammals/Ocelot
Dec 2016 - Oct 2019
.NET API Gateway
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:2 reviews, 112 commits, 29 PRs in 2 years 10 months
Contributions summary:Geffzhang's commits primarily involve enhancements to the .NET API Gateway project, `ocelot`. They focused on implementing and refactoring the Circuit Breaker pattern using Polly, demonstrating a focus on improving the resilience of the API gateway. Furthermore, the user's contributions included modifications to the build process and testing configurations within the Cake build script and PowerShell scripts, showcasing DevOps skills. The user also made changes that enhanced the test suite by adding rate-limiting tests, indicating a commitment to quality assurance and demonstrating the use of rate limiting options.
api-gatewayapidotnetnetstandard20gateway
dotnetcore/Magicodes.IE
Oct 2019 - Nov 2019
Import and export general library, support Dto import and export, template export, fancy export and dynamic export, support Excel, Csv, Word, Pdf and Html.
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits, 3 PRs, 2 comments in 29 days
Contributions summary:Geffzhang primarily contributed to the enhancement of the Excel export functionality within the `magicodes.ie` repository, a library focused on import and export operations. Their work involved adding support for exporting data from DataTables, including dynamic column support and the ability to handle datasets exceeding one million rows by splitting them into multiple sheets. They also addressed an issue related to the order of columns in the DataTable and DTOs to ensure data integrity during the export process.
xlsxcsvimport-and-exportsupport-librarydto
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