percona/percona-server-mongodb
Nov 2024 – Feb 2026
10 Months active
Languages Used
C++JavaScriptYAMLMarkdown
Technical Skills
Aggregation FrameworkBackend DevelopmentBuild SystemsC++Database InternalsDatabase Management
Charlie Swanson
PROFILE
Charlie Swanson
Charlie Swanson contributed to the percona/percona-server-mongodb repository by engineering advanced aggregation pipeline features, profiling enhancements, and robust test infrastructure. He developed and modernized Rank Fusion and Full Text Search indexing, integrating C++ and JavaScript to optimize query performance and ranking accuracy. Charlie improved reliability through targeted bug fixes in metadata handling, sharding, and pipeline validation, while also strengthening authorization and documentation for developer onboarding. His work on feature flag management and system architecture ensured safer rollouts and consistent behavior across distributed deployments. These efforts delivered measurable improvements in performance, maintainability, and data integrity for complex analytics and search workloads.
Overall Statistics
Feature vs Bugs
65%Features
Repository Contributions
37Total
Bugs
6
Commits
37
Features
11
Lines of code
10,119
Activity Months10
Your Network
586 peopleSame Organization
@mongodb.com339
Shared Repositories
247
Work History
February 2026
1 Commits
Feb 1, 2026February 2026 monthly summary for percona/percona-server-mongodb. Focus was on correctness and reliability of MongoT aggregation pipeline. Delivered a targeted bug fix that prevents extensions from being counted as mongot pipeline components and refactored pipeline handling to improve accuracy of aggregation requests. This reduces miscounts, improves data integrity for aggregation queries, and stabilizes MongoT integration. Related work tracked in commit 08a088b67a2c736bc62c26abfa164fdf3404a798 (SERVER-119184, PR #47567).
1 Commits
Feb 1, 2026February 2026 monthly summary for percona/percona-server-mongodb. Focus was on correctness and reliability of MongoT aggregation pipeline. Delivered a targeted bug fix that prevents extensions from being counted as mongot pipeline components and refactored pipeline handling to improve accuracy of aggregation requests. This reduces miscounts, improves data integrity for aggregation queries, and stabilizes MongoT integration. Related work tracked in commit 08a088b67a2c736bc62c26abfa164fdf3404a798 (SERVER-119184, PR #47567).
February 2026
January 2026
15 Commits • 3 Features
Jan 1, 2026January 2026 (2026-01) focused on strengthening observability, reliability, and performance readiness for Percona Server for MongoDB. Deliveries spanned extension metrics and pipeline tracking, FTDC/monitoring enhancements, testing framework reliability, and internal concurrency/shutdown improvements. The work yields deeper visibility into extension-driven workloads, richer diagnostics data, more robust tests, and safer resource management in shutdown scenarios, delivering tangible business value through faster issue resolution, improved performance insights, and more dependable release cycles.
January 2026
15 Commits • 3 Features
Jan 1, 2026January 2026 (2026-01) focused on strengthening observability, reliability, and performance readiness for Percona Server for MongoDB. Deliveries spanned extension metrics and pipeline tracking, FTDC/monitoring enhancements, testing framework reliability, and internal concurrency/shutdown improvements. The work yields deeper visibility into extension-driven workloads, richer diagnostics data, more robust tests, and safer resource management in shutdown scenarios, delivering tangible business value through faster issue resolution, improved performance insights, and more dependable release cycles.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Focused on strengthening profiling command security in percona/percona-server-mongodb. Delivered a targeted test enhancement for the profile command to exercise filter-based authorization, improving access control for profiling operations and aligning with server-side auth requirements. No major bugs fixed this period; security/test coverage improvements provide business value by reducing profiling risk and increasing release confidence. Technologies demonstrated include test automation, security/authorization testing, and precise commit tracing with SERVER-112952 and GitOrigin-RevId references.
1 Commits • 1 Features
Dec 1, 2025December 2025: Focused on strengthening profiling command security in percona/percona-server-mongodb. Delivered a targeted test enhancement for the profile command to exercise filter-based authorization, improving access control for profiling operations and aligning with server-side auth requirements. No major bugs fixed this period; security/test coverage improvements provide business value by reducing profiling risk and increasing release confidence. Technologies demonstrated include test automation, security/authorization testing, and precise commit tracing with SERVER-112952 and GitOrigin-RevId references.
December 2025
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 — MongoDB profiling enhancements and stability for Percona Server for MongoDB. Delivered targeted profiling via a new filter option, automatic profiling disablement under high lock timeouts, and two bug fixes to improve auth handling and profiler data management under contention. Result: clearer diagnostics, lower profiling overhead under load, and improved stability.
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 — MongoDB profiling enhancements and stability for Percona Server for MongoDB. Delivered targeted profiling via a new filter option, automatic profiling disablement under high lock timeouts, and two bug fixes to improve auth handling and profiler data management under contention. Result: clearer diagnostics, lower profiling overhead under load, and improved stability.
October 2025
1 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10: Focused on FCV-aware DDL reliability and feature flag propagation in MongoDB server code. Implemented VersionContext to centralize FCV handling across DDL operations, ensuring consistent feature flag checks in distributed scenarios. Also added developer-facing documentation detailing usage, initialization, propagation, and FCV implications for feature flags during transitions. This work reduces operational risk during FCV changes and supports safer feature rollouts across the cluster.
1 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10: Focused on FCV-aware DDL reliability and feature flag propagation in MongoDB server code. Implemented VersionContext to centralize FCV handling across DDL operations, ensuring consistent feature flag checks in distributed scenarios. Also added developer-facing documentation detailing usage, initialization, propagation, and FCV implications for feature flags during transitions. This work reduces operational risk during FCV changes and supports safer feature rollouts across the cluster.
October 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for percona/percona-server-mongodb: Focused on documentation enhancements to clarify MongoDB query shapes, stats keys, and plan cache keys. Delivered a detailed README with definitions, examples, and references to further docs, enabling developers to distinguish concepts quickly and apply known-good references. Commitment: 30ca7a5f9bbde8d5fafb42f6406713b0dfbcbcdd; SERVER-109914 Disambiguate query shape concepts (#41203). No major bugs fixed this month; emphasis on improving developer onboarding and documentation quality to reduce future support effort and speed feature delivery. Business value: clearer conceptual models, improved maintainability, and faster integration with MongoDB query-shape concepts. Technologies/skills demonstrated: documentation engineering, MongoDB concepts, git-based traceability, issue-based collaboration (SERVER-109914) and GitOrigin-RevId usage.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for percona/percona-server-mongodb: Focused on documentation enhancements to clarify MongoDB query shapes, stats keys, and plan cache keys. Delivered a detailed README with definitions, examples, and references to further docs, enabling developers to distinguish concepts quickly and apply known-good references. Commitment: 30ca7a5f9bbde8d5fafb42f6406713b0dfbcbcdd; SERVER-109914 Disambiguate query shape concepts (#41203). No major bugs fixed this month; emphasis on improving developer onboarding and documentation quality to reduce future support effort and speed feature delivery. Business value: clearer conceptual models, improved maintainability, and faster integration with MongoDB query-shape concepts. Technologies/skills demonstrated: documentation engineering, MongoDB concepts, git-based traceability, issue-based collaboration (SERVER-109914) and GitOrigin-RevId usage.
February 2025
4 Commits • 1 Features
Feb 1, 2025Month 2025-02: Delivered the Full Text Search (FTS) Indexing and Scoring feature for Percona Server for MongoDB, focusing on measurable search relevance improvements and robust test coverage. This month included four commits across FTS implementation, score fusion refinements, and test setup.
4 Commits • 1 Features
Feb 1, 2025Month 2025-02: Delivered the Full Text Search (FTS) Indexing and Scoring feature for Percona Server for MongoDB, focusing on measurable search relevance improvements and robust test coverage. This month included four commits across FTS implementation, score fusion refinements, and test setup.
February 2025
January 2025
5 Commits • 1 Features
Jan 1, 2025Monthly summary for 2025-01: Key features delivered, major bugs fixed, and impact across the Percona Server for MongoDB repository. Focused on performance, reliability, and business value for analytics workloads.
January 2025
5 Commits • 1 Features
Jan 1, 2025Monthly summary for 2025-01: Key features delivered, major bugs fixed, and impact across the Percona Server for MongoDB repository. Focused on performance, reliability, and business value for analytics workloads.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024: Delivered two focused changes for percona/percona-server-mongodb that improve reliability and maintainability of critical pipelines. Stabilized pipeline validation tests on non-sharded clusters to reduce flaky CI results. Refactored and enhanced aggregation pipeline $sort handling with a dedicated SortStageOptions struct and serialization improvements, improving code organization and end-user behavior in complex pipelines. These efforts reduce debugging time, enable faster iteration on new pipeline features, and deliver measurable business value through more predictable test outcomes and clearer interfaces for sorting in aggregation pipelines.
2 Commits • 1 Features
Dec 1, 2024December 2024: Delivered two focused changes for percona/percona-server-mongodb that improve reliability and maintainability of critical pipelines. Stabilized pipeline validation tests on non-sharded clusters to reduce flaky CI results. Refactored and enhanced aggregation pipeline $sort handling with a dedicated SortStageOptions struct and serialization improvements, improving code organization and end-user behavior in complex pipelines. These efforts reduce debugging time, enable faster iteration on new pipeline features, and deliver measurable business value through more predictable test outcomes and clearer interfaces for sorting in aggregation pipelines.
December 2024
November 2024
5 Commits • 1 Features
Nov 1, 20242024-11 Monthly review for percona/percona-server-mongodb focusing on delivering RankFusion modernization, shard filtering improvements for $search in aggregation, and enhanced query statistics error handling. The work strengthens test infrastructure, improves reliability in distributed deployments, and demonstrates strong technical execution with updated specs and geospatial test coverage.
November 2024
5 Commits • 1 Features
Nov 1, 20242024-11 Monthly review for percona/percona-server-mongodb focusing on delivering RankFusion modernization, shard filtering improvements for $search in aggregation, and enhanced query statistics error handling. The work strengthens test infrastructure, improves reliability in distributed deployments, and demonstrates strong technical execution with updated specs and geospatial test coverage.
Activity
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Quality Metrics
Correctness95.4%
Maintainability87.0%
Architecture91.8%
Performance84.6%
AI Usage22.8%
Skills & Technologies
Programming Languages
C++JavaScriptMarkdownYAML
Technical Skills
Aggregation FrameworkAggregation PipelineBackend DevelopmentBuild SystemsC++C++ DevelopmentC++ developmentC++ programmingDatabaseDatabase DevelopmentDatabase InternalsDatabase ManagementDatabase TestingDistributed SystemsDocumentation
Repositories Contributed To
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