percona/percona-server-mongodb
Nov 2024 – Jun 2026
13 Months active
Languages Used
C++JavaScriptYAMLMarkdownPython
Technical Skills
Aggregation FrameworkBackend DevelopmentBuild SystemsC++Database InternalsDatabase Management
Charlie Swanson
PROFILE
Charlie Swanson
Over thirteen months, contributed to percona/percona-server-mongodb by building and enhancing core database features, focusing on aggregation pipelines, observability, and profiling. Delivered improvements such as RankFusion modernization, Full Text Search indexing, and OpenTelemetry-based metrics, using C++, JavaScript, and Python scripting to strengthen performance and reliability. Addressed complex challenges in distributed systems, including feature flag management, sharding, and FCV-aware DDL operations, while refining error handling and test infrastructure for robust CI outcomes. Enhanced documentation and security through targeted updates, and improved monitoring with new metrics and counters, supporting maintainable, high-performance analytics and operational workflows across diverse deployment scenarios.
Overall Statistics
Feature vs Bugs
73%Features
Repository Contributions
48Total
Bugs
6
Commits
48
Features
16
Lines of code
14,665
Activity Months13
Your Network
642 peopleWork History
June 2026
7 Commits • 3 Features
Jun 1, 2026June 2026 monthly summary for the percona/percona-server-mongodb repository focused on delivering observability improvements, aligning rollout terminology, and validating stability under index and FCV scenarios. The team delivered deeper OpenTelemetry-based metrics, standardized IFR terminology across code/docs, and conducted rigorous stability tests for index operations with FCV transitions, while addressing key correctness fixes to improve reliability and performance.
7 Commits • 3 Features
Jun 1, 2026June 2026 monthly summary for the percona/percona-server-mongodb repository focused on delivering observability improvements, aligning rollout terminology, and validating stability under index and FCV scenarios. The team delivered deeper OpenTelemetry-based metrics, standardized IFR terminology across code/docs, and conducted rigorous stability tests for index operations with FCV transitions, while addressing key correctness fixes to improve reliability and performance.
June 2026
May 2026
2 Commits • 1 Features
May 1, 2026May 2026 monthly summary for percona/percona-server-mongodb focusing on strengthening observability and metrics reliability for MongoDB. Delivered port of OpCounters to OpenTelemetry and introduced a dedicated aggregates counter to improve visibility of aggregate command performance. Implemented tests to verify correct export and increment behavior across a variety of database operations, while ensuring no interference with existing query counters. No major bug fixes reported this month; emphasis on stability and actionable metrics to support performance tuning and SLA adherence.
May 2026
2 Commits • 1 Features
May 1, 2026May 2026 monthly summary for percona/percona-server-mongodb focusing on strengthening observability and metrics reliability for MongoDB. Delivered port of OpCounters to OpenTelemetry and introduced a dedicated aggregates counter to improve visibility of aggregate command performance. Implemented tests to verify correct export and increment behavior across a variety of database operations, while ensuring no interference with existing query counters. No major bug fixes reported this month; emphasis on stability and actionable metrics to support performance tuning and SLA adherence.
April 2026
2 Commits • 1 Features
Apr 1, 20262026-04 Monthly Summary for percona/percona-server-mongodb: Focused on improving testing accuracy and observability for OpCounters. Delivered a feature enhancing test isolation by removing resetForTest, and added OpenTelemetry metric names for OpCounters to bolster monitoring. No major bugs fixed this month. Business value: more reliable tests, clearer production metrics, and easier performance diagnosis. Technologies used: C++ code changes, OpenTelemetry instrumentation, and Git-based change workflow.
2 Commits • 1 Features
Apr 1, 20262026-04 Monthly Summary for percona/percona-server-mongodb: Focused on improving testing accuracy and observability for OpCounters. Delivered a feature enhancing test isolation by removing resetForTest, and added OpenTelemetry metric names for OpCounters to bolster monitoring. No major bugs fixed this month. Business value: more reliable tests, clearer production metrics, and easier performance diagnosis. Technologies used: C++ code changes, OpenTelemetry instrumentation, and Git-based change workflow.
April 2026
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).
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).
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.
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
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.
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.
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.
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
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.
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.
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.
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
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.
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.
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.
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
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.
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.
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.
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
Activity
Loading activity data...
Quality Metrics
Correctness96.4%
Maintainability86.8%
Architecture93.0%
Performance84.4%
AI Usage25.8%
Skills & Technologies
Programming Languages
C++JavaScriptMarkdownPythonYAML
Technical Skills
Aggregation FrameworkAggregation PipelineBackend DevelopmentBuild SystemsC++C++ DevelopmentC++ developmentC++ programmingDatabaseDatabase DevelopmentDatabase InternalsDatabase ManagementDatabase TestingDistributed SystemsDocumentation
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline