EXCEEDS logo
Exceeds
Sharon Rosner

PROFILE

Sharon Rosner

Worked on core enhancements to the ruby/ruby and Shopify/ruby repositories, focusing on performance, reliability, and concurrency. Improved ERB template rendering by optimizing HTML escaping in C, reducing allocations and increasing speed by 35%. Enhanced the Fiber Scheduler with fork-safe handling and IO throughput improvements, leveraging Ruby internals and asynchronous programming. Introduced automatic SSL socket closure via SSLSocket.sync_close, strengthening resource management and TLS reliability. Updated internal APIs in Shopify/ruby to better support Fiber Scheduler process status, improving concurrency management. Emphasized test-driven development, documentation, and robust system programming throughout, consistently delivering maintainable solutions in C and Ruby across backend systems.

Overall Statistics

Feature vs Bugs

80%Features

Repository Contributions

7Total
Bugs
1
Commits
7
Features
4
Lines of code
302
Activity Months4

Work History

July 2026

1 Commits • 1 Features

Jul 1, 2026

July 2026 Monthly Summary for Shopify/ruby: Delivered an internal API enhancement to strengthen Fiber Scheduler process status handling, improving concurrency management and observability. This work updates the internal API to support more robust process lifecycle awareness and aligns with Fiber Scheduler concurrency patterns.

January 2026

1 Commits • 1 Features

Jan 1, 2026

January 2026 monthly summary for ruby/ruby: Implemented automatic SSL socket closure via SSLSocket.sync_close, enhancing resource management and preventing socket leaks. This included adding a new kwarg to SSLSocket.new, updating SSL initialization logic, and expanding tests to cover the new behavior. The work aligns with OpenSSL integration improvements and strengthens the reliability of TLS connections in core Ruby.

December 2025

3 Commits • 1 Features

Dec 1, 2025

December 2025 monthly summary for ruby/ruby: Strengthened Fiber Scheduler reliability and boosted IO performance through two core deliverables. The fork-safe scheduler fix ensures correct operation after Process.fork, while the new IO write hook routes buffer flushes through the fiber scheduler, delivering improvements in IO throughput. These changes were supported by expanded tests and documentation updates (NEWS.md).

October 2025

2 Commits • 1 Features

Oct 1, 2025

October 2025 - Ruby/ruby: Focused on optimizing HTML escaping in ERB to improve template rendering performance. Implemented allocation-minimizing changes and a memcpy-based copy path for unescaped segments. This yielded ~35% speed improvement for escaped strings, reduced allocations, and clearer code. Changes delivered via two commits targeting html_escape: fa54a9c9e58fa810ccef9eef86dd7ba8f1763f2d and d11df4172ef203425fd7ee773b1e328b14da43c8, associated with PRs #87 and #88.

Activity

Loading activity data...

Quality Metrics

Correctness97.2%
Maintainability94.2%
Architecture94.2%
Performance94.2%
AI Usage34.2%

Skills & Technologies

Programming Languages

CMarkdownRuby

Technical Skills

CC ProgrammingC programmingPerformance OptimizationRubyRuby InternalsRuby internalsRuby programmingSSL/TLSString ManipulationSystems Programmingasynchronous programmingbackend developmentconcurrencydocumentation

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

ruby/ruby

Oct 2025 Jan 2026
3 Months active

Languages Used

CMarkdownRuby

Technical Skills

C ProgrammingC programmingPerformance OptimizationRuby internalsString ManipulationRuby

Shopify/ruby

Jul 2026 Jul 2026
1 Month active

Languages Used

No languages

Technical Skills

CRuby InternalsSystems Programming