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David Harrigan

PROFILE

David Harrigan

Worked on the duckdb-go repository with a focus on improving stability and resource management for Go bindings. Addressed a critical memory leak in the bindValue function by implementing deferred cleanup using mapping.DestroyLogicalType, ensuring that param_logical_type is properly deallocated. This fix prevents resource exhaustion during long-running workloads and reduces the risk of out-of-memory scenarios. The work emphasized reliability and maintainability, with no new features shipped during the period. Demonstrated skills in bug fixing, memory management, and Go development, while maintaining code hygiene and collaborating through issue tracking to ensure the long-term health of the codebase.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
1
Activity Months1

Work History

August 2025

1 Commits

Aug 1, 2025

In August 2025, the duckdb-go binding focus was on stability and resource management. The major deliverable was a critical memory-leak fix in bindValue to ensure deallocation of param_logical_type, preventing resource exhaustion during long-running workloads. The fix uses a deferred cleanup (mapping.DestroyLogicalType) to guarantee memory is freed. This was committed as 71d80ce34da7a6339ebb620ca8139edccbc781d3 ("fix: free param_logical_type to avoid leak"; #507). No new features were shipped this month; the emphasis was on reliability and maintainability. Impact: reduces risk of out-of-memory scenarios, improves stability for long-running queries, and simplifies future maintenance of the Go binding. Technologies/skills demonstrated: Go binding development, memory management and lifecycle (deferred cleanup), code hygiene and changelist discipline, collaboration via issue #507.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

Go

Technical Skills

Bug FixingMemory Management

Repositories Contributed To

1 repo

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

duckdb/duckdb-go

Aug 2025 Aug 2025
1 Month active

Languages Used

Go

Technical Skills

Bug FixingMemory Management