Hengfeiย Yang
Founding Engineer at OpenObserve
Shanghai, Shanghai, China
Summary
๐คฉ
RockstarHengfei Yang is a founding engineer with 12 years of hands-on experience building scalable back-end systems and cloud-native infrastructure from Shanghai. At OpenObserve he focuses on performance, migrations, and DevOps, improving ingester memory use, Dynamo file deletion workflows, and search/SQL query structures for a high-performance observability platform. He blends pragmatic engineering with system-level optimization, contributing to an open-source project positioned as a cost- and performance-focused alternative to Elasticsearch/Splunk/Datadog. Hengfeiโs strengths include shipping measurable performance gains and evolving data pipelines for petabyte-scale workloads, and he often operates at the intersection of code refactoring and production reliability.
12 years of coding experience
Github Skills (14)
parquet10
performance-tuning10
rust10
back-end-development10
fusion9
inverted-index9
cicd8
database-management7
data-structure5
datastructures-algorithms5
algorithms5
algorithm5
data-structures5
go4
Programming languages (15)
Github contributions (5)
openobserve/openobserve
Feb 2023 - Mar 2023
Open source observability platform for logs, metrics, traces, frontend monitoring, pipelines and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:1828 reviews, 112 commits, 2683 PRs in 1 month
Contributions summary:Hengfei primarily focused on back-end improvements, specifically in the areas of migration, performance enhancements, and code refactoring. They were responsible for deleting files from Dynamo, improving the ingester's memory usage, and optimizing search performance. Additionally, the user worked on maintaining and improving the system's infrastructure, including creating features for alerts and making adjustments to the data structure for the SQL queries.
datadogelasticsearchfrontendllmmonitoring
zincsearch/sdk-python-zincsearch
Jun 2022 - Sep 2022
Python SDK Client for ZincSearch
Contributions:7 commits, 4 pushes, 2 tags in 3 months
pythonzinczincsearch
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