Aaron Schulz
Senior Performance Engineer at Wikimedia Foundation
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolAaron Schulz is a Senior Performance Engineer with 18 years of experience optimizing large-scale web platforms, currently focusing on Wikimedia Foundation systems from San Francisco. He specializes in server-side performance, MySQL tuning, concurrency and locking, and effective caching strategies (CDN, memcached/redis), and has a track record of designing resilient systems that tolerate unreliable components. At Wikimedia he built staged deployment tooling, abstracted file access for DFS migrations (Swift/Ceph), rewrote task queuing to eliminate deadlocks and duplicate work, and improved media storage and large upload handling. His backend contributions to the prominent Wikia/app repository include optimizing masterPosWait and introducing cache-touch semantics to reduce heavyweight operations. Motivated by cross-functional teams and knowledge transfer, he thrives on taking on unfamiliar projects and quickly becoming the in-house expert through collaborative learning. He brings broad language experience (PHP, Python, C++, MATLAB, FORTRAN) and practical configuration automation with Puppet to complex production environments.
18 years of coding experience
6 years of employment as a software developer
Bachelor of Science (BS), Computer Science, Bachelor of Science (BS), Computer Science at The Ohio State University
some french
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (9)
databases10
caching10
php10
relational-databases10
mysql10
sql-database10
database10
performance-optimization9
mediawiki9
Programming languages (11)
Github contributions (5)
Wikia/app
Mar 2012 - May 2017
Wikia Application Code
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 commits in 5 years 2 months
Contributions summary:Aaron primarily focused on improving the performance of the database interactions by caching the database position. They optimized database operations, specifically the `masterPosWait` function within the MySQL database class, as well as checking for read-only mode when purging expired blocks. Furthermore, they introduced a `touch()` method for users to update their cache timestamps, avoiding heavyweight operations.
wikiphpwikiamediawiki
wikimedia/mediawiki-services-jobrunner
Jun 2014 - May 2022
Mirror of https://gerrit.wikimedia.org/g/mediawiki/services/jobrunner/
Contributions:75 commits in 8 years
job-runnermediawiki
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