electric-sql/electric
Oct 2024 – Oct 2025
13 Months active
Languages Used
ElixirHeexMarkdownShellTypeScriptYAMLSQLBash
Technical Skills
Backend DevelopmentDependency ManagementObservabilityAPI Client DevelopmentAPI ConfigurationAPI Design
Garry Hill
PROFILE
Garry Hill
Garry contributed to the electric-sql/electric repository by engineering robust data synchronization and backend systems, focusing on reliability, observability, and developer experience. He implemented features such as partitioned table support, advanced Elixir client integration, and real-time data streaming, leveraging Elixir, PostgreSQL, and TypeScript. His work included refactoring API layers, optimizing process management, and enhancing telemetry for proactive monitoring. Garry addressed concurrency and configuration challenges, improved error handling, and modernized storage subsystems to ensure data integrity and operational stability. Through careful system design and thorough testing, he delivered scalable solutions that improved deployment workflows and reduced maintenance risk across distributed environments.
Overall Statistics
Feature vs Bugs
65%Features
Repository Contributions
81Total
Bugs
16
Commits
81
Features
30
Lines of code
31,542
Activity Months13
Your Network
34 peopleSame Organization
@electric-sql.com3
Work History
October 2025
9 Commits • 2 Features
Oct 1, 2025October 2025 highlights: Strengthened Sync-Service startup stability and state restoration in electric, with lazy consumer registration, stack canary watchdog, hibernation support, and automated restoration of shape/publication state. Achieved storage hardening by fixing incomplete writes, ensuring trash handling remains within the same filesystem as shape storage, and removing the legacy FileStorage in favor of PureFileStorage. These changes deliver faster ready times, more reliable restarts, improved data integrity, and simplified maintenance. Demonstrated proficiency in Elixir/Erlang ETS-based state management, robust process lifecycle patterns, and careful modernization of storage layers.
9 Commits • 2 Features
Oct 1, 2025October 2025 highlights: Strengthened Sync-Service startup stability and state restoration in electric, with lazy consumer registration, stack canary watchdog, hibernation support, and automated restoration of shape/publication state. Achieved storage hardening by fixing incomplete writes, ensuring trash handling remains within the same filesystem as shape storage, and removing the legacy FileStorage in favor of PureFileStorage. These changes deliver faster ready times, more reliable restarts, improved data integrity, and simplified maintenance. Demonstrated proficiency in Elixir/Erlang ETS-based state management, robust process lifecycle patterns, and careful modernization of storage layers.
October 2025
September 2025
8 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for the electric-sql/electric codebase, focusing on strengthening data correctness, reliability, and observability. Delivered targeted Elixir client improvements, enhanced sync-service architecture and telemetry, and robust error handling to support safer deployments and proactive monitoring. Consequent business value includes improved data accuracy, lower maintenance risk, and better operator visibility across deployments.
September 2025
8 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for the electric-sql/electric codebase, focusing on strengthening data correctness, reliability, and observability. Delivered targeted Elixir client improvements, enhanced sync-service architecture and telemetry, and robust error handling to support safer deployments and proactive monitoring. Consequent business value includes improved data accuracy, lower maintenance risk, and better operator visibility across deployments.
August 2025
9 Commits • 3 Features
Aug 1, 2025During August 2025, the electric-sql/electric repository delivered performance, reliability, and observability improvements that directly enhance throughput, data integrity, and end-to-end tracking for sync workloads. Key changes include upgrading the core query engine (pg_query_ex) to 0.9.0 with synchronous process monitoring in Connection.Manager, resulting in lower race-condition risk and more stable termination handling. Reliability fixes in the Elixir client corrected control message decoding and embedded struct deserialization, aligned Api.validate mappings, and added regression tests to prevent UUID casting regressions in Phoenix.Sync. A new Ecto.Query-driven Column Subset Streaming feature allows streaming only specified columns via select/3 and select_merge, cutting unnecessary data transfer and reducing latency. Observability improvements include including txids and LSN in message headers and upgrading the electric client to 1.1.1. Overall, these changes deliver tangible business value: higher performance, stronger data integrity, and improved operability across the data-sync stack.
9 Commits • 3 Features
Aug 1, 2025During August 2025, the electric-sql/electric repository delivered performance, reliability, and observability improvements that directly enhance throughput, data integrity, and end-to-end tracking for sync workloads. Key changes include upgrading the core query engine (pg_query_ex) to 0.9.0 with synchronous process monitoring in Connection.Manager, resulting in lower race-condition risk and more stable termination handling. Reliability fixes in the Elixir client corrected control message decoding and embedded struct deserialization, aligned Api.validate mappings, and added regression tests to prevent UUID casting regressions in Phoenix.Sync. A new Ecto.Query-driven Column Subset Streaming feature allows streaming only specified columns via select/3 and select_merge, cutting unnecessary data transfer and reducing latency. Observability improvements include including txids and LSN in message headers and upgrading the electric client to 1.1.1. Overall, these changes deliver tangible business value: higher performance, stronger data integrity, and improved operability across the data-sync stack.
August 2025
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary for electric-sql/electric focused on reliability and operability improvements in HTTP API configuration. Key changes implemented to make HTTP API acceptors robust and configurable, with an emphasis on preventing runtime errors and simplifying production operations.
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary for electric-sql/electric focused on reliability and operability improvements in HTTP API configuration. Key changes implemented to make HTTP API acceptors robust and configurable, with an emphasis on preventing runtime errors and simplifying production operations.
June 2025
6 Commits • 1 Features
Jun 1, 2025June 2025: Delivered robust Elixir client enhancements and reliability fixes to improve data correctness, scalability, and developer productivity. Implemented ShapeDefinitions from Ecto.Changeset, expanded type and parameter handling, and added replica support. Fixed cross-serialization robustness in the sync-service, reduced shutdown log noise, and corrected cross-process streaming in the Elixir client to ensure safe cleanup and consumption. These changes reduce incidents, shorten time-to-value for users, and strengthen the platform's data access layer.
6 Commits • 1 Features
Jun 1, 2025June 2025: Delivered robust Elixir client enhancements and reliability fixes to improve data correctness, scalability, and developer productivity. Implemented ShapeDefinitions from Ecto.Changeset, expanded type and parameter handling, and added replica support. Fixed cross-serialization robustness in the sync-service, reduced shutdown log noise, and corrected cross-process streaming in the Elixir client to ensure safe cleanup and consumption. These changes reduce incidents, shorten time-to-value for users, and strengthen the platform's data access layer.
June 2025
May 2025
4 Commits • 2 Features
May 1, 2025May 2025 highlights for electric-sql/electric: delivered key Elixir client and runtime reliability improvements, plus CI/test stability and packaging hygiene that reduce risk and support scalable growth. Key outcomes include configurable streaming of server errors as messages, a more robust shape lifecycle with reader-count based persistence, and support for custom Elixir client connection pools. Additionally, CI stability and packaging integrity were improved by isolating per-test mock modules and excluding non-essential examples from npm publishing.
May 2025
4 Commits • 2 Features
May 1, 2025May 2025 highlights for electric-sql/electric: delivered key Elixir client and runtime reliability improvements, plus CI/test stability and packaging hygiene that reduce risk and support scalable growth. Key outcomes include configurable streaming of server errors as messages, a more robust shape lifecycle with reader-count based persistence, and support for custom Elixir client connection pools. Additionally, CI stability and packaging integrity were improved by isolating per-test mock modules and excluding non-essential examples from npm publishing.
April 2025
9 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for electric-sql/electric: Focused on reliability, performance, and observability enhancements with high business impact. Delivered Elixir client enhancements including a wall-clock timeout (default 5 minutes) for retry logic, static headers applied to all requests, and namespace prefix support for schema and query namespaces, together with richer change messaging that includes old values on updates. Improved shape cache reliability by introducing per-shape timeouts to prevent a single slow recovery from derailing init and deleting shapes that time out with error logs. Optimized response handling by returning HTTP 409 immediately for live requests when shapes are invalidated, reducing round trips. Fixed memory statistics accuracy in the Sync Service by correcting dead-process handling and ensuring terminated processes report zero memory usage. Updated OpenTelemetry metric exporter to bug-fix versions (0.3.5 and 0.3.6) to improve protobuf encoding and exporter stability. These updates collectively reduce downtime, improve monitoring and auditing, and enhance developer experience.
9 Commits • 2 Features
Apr 1, 2025April 2025 monthly summary for electric-sql/electric: Focused on reliability, performance, and observability enhancements with high business impact. Delivered Elixir client enhancements including a wall-clock timeout (default 5 minutes) for retry logic, static headers applied to all requests, and namespace prefix support for schema and query namespaces, together with richer change messaging that includes old values on updates. Improved shape cache reliability by introducing per-shape timeouts to prevent a single slow recovery from derailing init and deleting shapes that time out with error logs. Optimized response handling by returning HTTP 409 immediately for live requests when shapes are invalidated, reducing round trips. Fixed memory statistics accuracy in the Sync Service by correcting dead-process handling and ensuring terminated processes report zero memory usage. Updated OpenTelemetry metric exporter to bug-fix versions (0.3.5 and 0.3.6) to improve protobuf encoding and exporter stability. These updates collectively reduce downtime, improve monitoring and auditing, and enhance developer experience.
April 2025
March 2025
2 Commits • 2 Features
Mar 1, 2025Concise monthly summary for 2025-03 focusing on business value and technical achievements across the electric-sql/electric repository.
March 2025
2 Commits • 2 Features
Mar 1, 2025Concise monthly summary for 2025-03 focusing on business value and technical achievements across the electric-sql/electric repository.
February 2025
9 Commits • 5 Features
Feb 1, 2025February 2025: Key features delivered, bugs fixed, and notable improvements across Electric. Highlights include Shapes.Api module and centralized shape operations, embedded mode for Elixir client with streaming endpoints, and external API surface enhancements; configuration simplifications and build-time telemetry optimizations. These changes improve maintainability, reliability, and performance while enabling more flexible integration scenarios with embedded Electric instances and streamlined deploys.
9 Commits • 5 Features
Feb 1, 2025February 2025: Key features delivered, bugs fixed, and notable improvements across Electric. Highlights include Shapes.Api module and centralized shape operations, embedded mode for Elixir client with streaming endpoints, and external API surface enhancements; configuration simplifications and build-time telemetry optimizations. These changes improve maintainability, reliability, and performance while enabling more flexible integration scenarios with embedded Electric instances and streamlined deploys.
February 2025
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025 — Focused on expanding data partitioning capabilities, stabilizing the backend, and aligning deployment tooling. Key features delivered: Partitioned Tables Support in Electric Sync enabling subscriptions to individual partitions or the root partitioned table; inspector updates to understand partition hierarchies and route partitioned changes; robust tests covering partitioning behavior. API and Example Deployments alignment including renaming database_id to source_id across deployments, adding pooled connections in the Next.js example, and updating the admin API endpoint for adding databases to improve consistency and deployment workflows. Major bugs fixed: backend stability improvements addressing a race condition in the mock backend (requests now initiate after at least one subscriber) and cleanup reliability improvements ensuring shape cache cleanup runs after consumer supervision teardown to prevent file-in-use errors. Overall impact: improved data granularity and reliability, smoother deployment workflows, and stronger test stability, delivering tangible business value for data synchronization, deployment ops, and developer experience. Technologies/skills demonstrated: PostgreSQL partitioned tables, sync service architecture, partition hierarchy inspection, concurrency and test reliability patterns, shape cache lifecycle management, pooled connections in Next.js, and admin API integration.
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025 — Focused on expanding data partitioning capabilities, stabilizing the backend, and aligning deployment tooling. Key features delivered: Partitioned Tables Support in Electric Sync enabling subscriptions to individual partitions or the root partitioned table; inspector updates to understand partition hierarchies and route partitioned changes; robust tests covering partitioning behavior. API and Example Deployments alignment including renaming database_id to source_id across deployments, adding pooled connections in the Next.js example, and updating the admin API endpoint for adding databases to improve consistency and deployment workflows. Major bugs fixed: backend stability improvements addressing a race condition in the mock backend (requests now initiate after at least one subscriber) and cleanup reliability improvements ensuring shape cache cleanup runs after consumer supervision teardown to prevent file-in-use errors. Overall impact: improved data granularity and reliability, smoother deployment workflows, and stronger test stability, delivering tangible business value for data synchronization, deployment ops, and developer experience. Technologies/skills demonstrated: PostgreSQL partitioned tables, sync service architecture, partition hierarchy inspection, concurrency and test reliability patterns, shape cache lifecycle management, pooled connections in Next.js, and admin API integration.
December 2024
6 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary: Delivered performance, reliability, and observability improvements for the electric repository. Implemented Elixir Client Performance and Configurability Enhancements, added request pooling with persistent connections, a generic params map for all requests, and extended client configuration to support additional query parameters. Hardened Elixir Client Reliability with Atomic Requests and Request Coalescing to eliminate race conditions, ensure atomic monitoring+requests, and reduce duplicate backend calls, improving stability under concurrent load. Enhanced Sync-service Telemetry and Configuration with CPU and memory telemetry, configurable call-home URL, and simplified defaults making most settings optional for easier embedding. These changes collectively increase throughput, reliability, visibility, and integration flexibility, delivering tangible business value: faster client operations, fewer intermittent failures, better resource insight, and easier embedding for partner applications.
6 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary: Delivered performance, reliability, and observability improvements for the electric repository. Implemented Elixir Client Performance and Configurability Enhancements, added request pooling with persistent connections, a generic params map for all requests, and extended client configuration to support additional query parameters. Hardened Elixir Client Reliability with Atomic Requests and Request Coalescing to eliminate race conditions, ensure atomic monitoring+requests, and reduce duplicate backend calls, improving stability under concurrent load. Enhanced Sync-service Telemetry and Configuration with CPU and memory telemetry, configurable call-home URL, and simplified defaults making most settings optional for easier embedding. These changes collectively increase throughput, reliability, visibility, and integration flexibility, delivering tangible business value: faster client operations, fewer intermittent failures, better resource insight, and easier embedding for partner applications.
December 2024
November 2024
13 Commits • 6 Features
Nov 1, 20242024-11 Monthly Summary for electric-sql/electric: This period delivered targeted improvements in observability, API capabilities, and developer experience, coupled with CI/engineering efficiency gains. The work strengthens reliability for large datasets, enables richer integrations, expands language bindings, and improves the end-to-end DX for users building real-time data apps and pipelines.
November 2024
13 Commits • 6 Features
Nov 1, 20242024-11 Monthly Summary for electric-sql/electric: This period delivered targeted improvements in observability, API capabilities, and developer experience, coupled with CI/engineering efficiency gains. The work strengthens reliability for large datasets, enables richer integrations, expands language bindings, and improves the end-to-end DX for users building real-time data apps and pipelines.
October 2024
1 Commits
Oct 1, 2024October 2024 monthly summary for electric-sql/electric: Focused on stabilizing observability integration by addressing OpenTelemetry compatibility with the latest library. Delivered a critical bug fix to remove dependency drift, ensuring the sync service remains aligned with current OpenTelemetry standards and avoids build-time regressions. No new user-facing features were released this month; instead, maintenance and risk reduction were prioritized to support ongoing reliability and performance.
1 Commits
Oct 1, 2024October 2024 monthly summary for electric-sql/electric: Focused on stabilizing observability integration by addressing OpenTelemetry compatibility with the latest library. Delivered a critical bug fix to remove dependency drift, ensuring the sync service remains aligned with current OpenTelemetry standards and avoids build-time regressions. No new user-facing features were released this month; instead, maintenance and risk reduction were prioritized to support ongoing reliability and performance.
October 2024
Activity
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Quality Metrics
Correctness89.2%
Maintainability86.2%
Architecture85.4%
Performance79.0%
AI Usage20.4%
Skills & Technologies
Programming Languages
BashElixirHeexJSONLuxMarkdownSQLShellTypeScriptYAML
Technical Skills
API Client DevelopmentAPI ConfigurationAPI DesignAPI DevelopmentAPI IntegrationAPI RefactoringBackend DevelopmentBug FixingBuild Process ManagementBuild SystemsCI/CDCI/CD ConfigurationCachingClient DevelopmentClient-Server
Repositories Contributed To
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