Otto Van Der Schaaf
Committer And PMC Member, Apache PageSpeed (incubating).
Castricum, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolOtto Van Der Schaaf is a seasoned backend and performance engineer with 13 years of hands-on experience building and optimizing high-performance web proxies and modules. As a long-time committer and PMC member on Apache PageSpeed and Apache Traffic Server, he combines deep protocol-level knowledge with practical fixes—like HTTP keep-alive integration and IPRO/404 handling—that improve real-world stability and throughput. He has contributed to Envoy’s build and testing infrastructure and helped harden gzip and caching plugins, showing a pattern of improving developer ergonomics and runtime efficiency. Founder of niche performance consultancies and products (We-Amp, IISpeed), he translates open-source advances into commercial optimization solutions. Based in the Netherlands, Otto pairs low-level C/C++ systems work with cross-project refactors and build-tool savvy, making him equally at home in cores of internet-facing infrastructure and their operational ecosystems.
13 years of coding experience
15 years of employment as a software developer
jac p thijsse collegede berg
Dutch, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (25)
caching10
gzip10
c-language10
configuration-management10
http10
build-system10
c1110
c1710
deflate10
performance-optimization10
configuration-file10
bazel10
configurations10
nginx10
cprogramming-language10
Programming languages (10)
Github contributions (5)
apache/incubator-pagespeed-mod
Dec 2015 - Nov 2022
Apache module for rewriting web pages to reduce latency and bandwidth.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:400 commits, 404 PRs, 542 pushes in 7 years
Contributions summary:Otto primarily contributed to the Apache module for rewriting web pages, focusing on addressing issues and implementing changes related to optimization. They implemented features like improved handling of HTML content and fixed a critical cache issue for load from file. They also updated the project's dependencies and addressed various build-related issues, improving the module's stability and performance.
latencyrewritingapachebandwidthpagespeed
apache/incubator-pagespeed-ngx
Nov 2012 - Jun 2022
Automatic PageSpeed optimization module for Nginx
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 release, 1 review, 225 commits in 9 years 9 months
Contributions summary:Otto primarily focused on enhancing the Apache mod_pagespeed module for Nginx, specifically by integrating support for HTTP keep-alive connections. Their contributions involved implementing connection re-use, improved handling of HTTP header parsing, and addressing issues related to data transfer with the native fetcher. They also addressed critical bug fixes including issues around IPRO (In-Place Resource Optimization) lookups, and 404 responses with custom locations to ensure a stable and performant experience within the module.
nginxprefetchoptimizationpagespeedweb-performance
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