Wei Liu

Qingdao, Shandong, China

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Summary

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Rockstar

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Top School

Wei Liu is a backend-focused software engineer and undergraduate at Shandong University with six years of hands-on experience contributing to high-profile open-source projects. He has improved core functionality in Apache IoTDB—adding session pool query timeouts, InfluxDB protocol tests, and MQTT ingestion for MPP—and has fixed complex bugs and refactored storage integration for Apache SkyWalking APM. His work spans database query optimization, protocol integration, and reliable message ingestion, reflecting strength in distributed systems and storage backends. A recent research internship at The University of Hong Kong complements his open-source impact with academic experience. Based in Qingdao, he maintains a personal site (lovoski.github.io) and is comfortable navigating large codebases to deliver pragmatic, test-covered improvements.

7 years of coding experience

Bachelor of Engineering - BE, Computer Science and Technology, Bachelor of Engineering - BE, Computer Science and Technology at Shandong University

Github Skills (17)

skywalking10

back-end-development10

mqtt10

java10

apm10

mqttnet10

javas10

backend10

influxdb10

time-series9

big-data9

databases9

sql9

database9

distributed-tracing8

Programming languages (5)

JavaCSSJavaScriptHTMLPython

Github contributions (5)

apache/skywalking

Aug 2021 - Mar 2022

APM, Application Performance Monitoring System

Role in this project:

Back-end Developer

Contributions:40 reviews, 8 commits, 9 PRs in 7 months

Contributions summary:Wei primarily focused on fixing bugs and improving the functionality of the Apache SkyWalking APM system. Their contributions included implementing descending sort functions in database query DAOs, fixing issues with auto-grouping and pagination in database queries, and correcting bugs in the topology query. They also contributed to supporting Apache IoTDB as a storage option and refactored parts of the IoTDB storage plugin.

performance-monitoringskywalkingobservabilityapmservice-mesh

apache/iotdb

Oct 2021 - Jun 2022

Apache IoTDB

Role in this project:

Back-end Developer

Contributions:5 reviews, 8 commits, 10 PRs in 8 months

Contributions summary:Wei's primary contribution involves enhancing the Apache IoTDB system, specifically focusing on session pool functionality and InfluxDB protocol integration. They introduced a timeout mechanism for query execution, modifying SessionPool.executeQueryStatement in the session module. Furthermore, they added a test framework for the InfluxDB protocol, adding related test cases. The user also contributed to the MQTT implementation within the MPP framework, allowing the system to receive and process MQTT messages.

apache-iotdbtimeseriesiotbig-datajava

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