electric-sql/electric
Oct 2024 – Oct 2025
13 Months active
Languages Used
ElixirSQLJavaScriptMarkdownShellTypeScriptYAMLJSON
Technical Skills
Backend DevelopmentConcurrency ControlDatabase ManagementPostgreSQLAPI ConfigurationAPI Integration
Ilia Borovitinov
PROFILE
Ilia Borovitinov
Ilia worked on the electric-sql/electric repository, delivering core backend features and reliability improvements for distributed data synchronization and replication. Over 13 months, Ilia built and optimized a multi-tenant sync service, introduced a custom storage engine, and enhanced observability with OpenTelemetry metrics. Using Elixir, PostgreSQL, and TypeScript, Ilia addressed concurrency, data integrity, and performance challenges by implementing parallel startup, robust replication protocols, and resource-efficient file handling. The work included protocol modernization, secure query support, and CI/CD automation, resulting in a stable, scalable system. Ilia’s contributions demonstrated deep technical understanding and careful attention to maintainability and operational resilience.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
112Total
Bugs
14
Commits
112
Features
42
Lines of code
36,453
Activity Months13
Your Network
34 peopleSame Organization
@electric-sql.com3
Work History
October 2025
12 Commits • 4 Features
Oct 1, 2025October 2025 (electric-sql/electric) delivered key customer-facing and reliability enhancements across data synchronization, shape streaming, and release processes. Features include: changes_only mode, subset snapshots with filtering/sorting/limiting, and offset=now for up-to-date data; improved shape handling and metrics with live-request tagging, startup topology, and reliable deserialization; and a more stable CI/CD and publishing flow with dependency/tooling improvements, including publishing to ./packages and lockfile hygiene. Configuration clarity was improved by renaming ELECTRIC_QUERY_DATABASE_URL to ELECTRIC_POOLED_DATABASE_URL across code/docs/tests, and test stability was boosted by addressing teardown race conditions. These efforts collectively reduce data latency, increase reliability, and accelerate safe deployments.
12 Commits • 4 Features
Oct 1, 2025October 2025 (electric-sql/electric) delivered key customer-facing and reliability enhancements across data synchronization, shape streaming, and release processes. Features include: changes_only mode, subset snapshots with filtering/sorting/limiting, and offset=now for up-to-date data; improved shape handling and metrics with live-request tagging, startup topology, and reliable deserialization; and a more stable CI/CD and publishing flow with dependency/tooling improvements, including publishing to ./packages and lockfile hygiene. Configuration clarity was improved by renaming ELECTRIC_QUERY_DATABASE_URL to ELECTRIC_POOLED_DATABASE_URL across code/docs/tests, and test stability was boosted by addressing teardown race conditions. These efforts collectively reduce data latency, increase reliability, and accelerate safe deployments.
October 2025
September 2025
9 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for electric-sql/electric. Focused on performance optimization, enhanced data access capabilities, and reliability improvements across resource management, sync services, and replication. Delivered tangible business value through faster startup, more flexible query handling, and stronger data consistency in distributed deployments.
September 2025
9 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for electric-sql/electric. Focused on performance optimization, enhanced data access capabilities, and reliability improvements across resource management, sync services, and replication. Delivered tangible business value through faster startup, more flexible query handling, and stronger data consistency in distributed deployments.
August 2025
14 Commits • 4 Features
Aug 1, 2025August 2025 performance-focused delivery for electric, emphasizing startup performance, reliability, and feature completeness. Key features and outcomes: Key features delivered: - Startup time optimization: parallel shape recovery and consumer initialization refactor reduced initial load for large shape sets from ~17s to ~7s (commit ad15a164). - Replication flush tracking: introduced a FlushTracker and enhanced state handling to reliably track received vs flushed WAL positions and ensure flush acknowledgements advance correctly across multiple shapes (commits across several fixes: 9aa1e564, 871d4e9, 8beda6f, 375ba109, ade2f425, e49342bd, 25313bd0). - Query correctness and subquery support: added boolean type validation for WHERE conditions and introduced support for IN (SELECT ...) subqueries behind a feature flag, with no-optimized evaluation initially (commits cb0e4841, f50aeeb6f). - Telemetry and connection stability: fixed CPU telemetry crash due to system_info calls and improved resilience when connections fail (commits 71b3d3b1, f26a4254). - Release notes/docs and build stability: published Electric 1.1 release notes/blog post and updated docs/UI to showcase performance improvements, plus lockfile mismatch repair for consistent installs (commits f564190c, 4055c052). Major bugs fixed: - Resolved CPU telemetry crash and improved stability during connection transitions. - Fixed lockfile mismatch issues to ensure reliable builds across environments. - Corrected edge-case handling in flush tracking and shape identity management to prevent incorrect acknowledgements on restart or during skipped transactions. Overall impact and accomplishments: - Significantly faster startup for large configurations, improving time-to-first-usable state and user-perceived performance. - More reliable replication and WAL flush advancement across shapes, increasing data consistency guarantees. - Expanded query capabilities with safe, controlled subquery support and stronger input validation. - Improved observability and resilience in production environments, reducing crash-related incidents and connection-related failures. - Clear customer-facing communication through updated release notes and docs, and more stable build pipelines via lockfile fixes. Technologies/skills demonstrated: - Advanced concurrency and parallelism for startup optimization. - Robust state management and per-shape tracking in replication (FlushTracker, WAL progress tracking). - Feature flag governance and incremental feature rollout (subqueries behind feature flag). - Telemetry resilience, fault tolerance, and connection lifecycle handling. - Release engineering, documentation, and dependency management (lockfile integrity).
14 Commits • 4 Features
Aug 1, 2025August 2025 performance-focused delivery for electric, emphasizing startup performance, reliability, and feature completeness. Key features and outcomes: Key features delivered: - Startup time optimization: parallel shape recovery and consumer initialization refactor reduced initial load for large shape sets from ~17s to ~7s (commit ad15a164). - Replication flush tracking: introduced a FlushTracker and enhanced state handling to reliably track received vs flushed WAL positions and ensure flush acknowledgements advance correctly across multiple shapes (commits across several fixes: 9aa1e564, 871d4e9, 8beda6f, 375ba109, ade2f425, e49342bd, 25313bd0). - Query correctness and subquery support: added boolean type validation for WHERE conditions and introduced support for IN (SELECT ...) subqueries behind a feature flag, with no-optimized evaluation initially (commits cb0e4841, f50aeeb6f). - Telemetry and connection stability: fixed CPU telemetry crash due to system_info calls and improved resilience when connections fail (commits 71b3d3b1, f26a4254). - Release notes/docs and build stability: published Electric 1.1 release notes/blog post and updated docs/UI to showcase performance improvements, plus lockfile mismatch repair for consistent installs (commits f564190c, 4055c052). Major bugs fixed: - Resolved CPU telemetry crash and improved stability during connection transitions. - Fixed lockfile mismatch issues to ensure reliable builds across environments. - Corrected edge-case handling in flush tracking and shape identity management to prevent incorrect acknowledgements on restart or during skipped transactions. Overall impact and accomplishments: - Significantly faster startup for large configurations, improving time-to-first-usable state and user-perceived performance. - More reliable replication and WAL flush advancement across shapes, increasing data consistency guarantees. - Expanded query capabilities with safe, controlled subquery support and stronger input validation. - Improved observability and resilience in production environments, reducing crash-related incidents and connection-related failures. - Clear customer-facing communication through updated release notes and docs, and more stable build pipelines via lockfile fixes. Technologies/skills demonstrated: - Advanced concurrency and parallelism for startup optimization. - Robust state management and per-shape tracking in replication (FlushTracker, WAL progress tracking). - Feature flag governance and incremental feature rollout (subqueries behind feature flag). - Telemetry resilience, fault tolerance, and connection lifecycle handling. - Release engineering, documentation, and dependency management (lockfile integrity).
August 2025
July 2025
5 Commits • 2 Features
Jul 1, 2025July 2025 performance summary for electric-sql/electric: Delivered core architectural upgrade and observability improvements with measurable business value. Implemented PureFileStorage Engine replacing CubDB to boost read/write performance and scalability, featuring a two-file format for snapshots and main logs, with enhanced buffering and read consistency to better handle live data streams. Fixed PostgreSQL publication update logic to correctly determine updates across PG14/PG15, ensuring accurate row filtering. Introduced a default OpenTelemetry sampling ratio across all apps in the sync-service to improve out-of-the-box observability and troubleshooting. Additional stability and performance gains came from targeted in-memory caching improvements and ensuring post-reboot cache correctness for PureStorage.
July 2025
5 Commits • 2 Features
Jul 1, 2025July 2025 performance summary for electric-sql/electric: Delivered core architectural upgrade and observability improvements with measurable business value. Implemented PureFileStorage Engine replacing CubDB to boost read/write performance and scalability, featuring a two-file format for snapshots and main logs, with enhanced buffering and read consistency to better handle live data streams. Fixed PostgreSQL publication update logic to correctly determine updates across PG14/PG15, ensuring accurate row filtering. Introduced a default OpenTelemetry sampling ratio across all apps in the sync-service to improve out-of-the-box observability and troubleshooting. Additional stability and performance gains came from targeted in-memory caching improvements and ensuring post-reboot cache correctness for PureStorage.
June 2025
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for electric-sql/electric: Delivered observability and startup-stability enhancements for publication configurations, introduced OpenTelemetry metrics for the sync service’s garbage collection, and fixed an ETS shape lookup bug. These deliverables improve reliability during startup, cloud deployments (notably AWS Aurora), and overall runtime health visibility, while ensuring accurate data shape handling for publication logic.
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for electric-sql/electric: Delivered observability and startup-stability enhancements for publication configurations, introduced OpenTelemetry metrics for the sync service’s garbage collection, and fixed an ETS shape lookup bug. These deliverables improve reliability during startup, cloud deployments (notably AWS Aurora), and overall runtime health visibility, while ensuring accurate data shape handling for publication logic.
June 2025
May 2025
6 Commits • 3 Features
May 1, 2025May 2025 performance summary for electric-sql/electric focused on reliability, observability, and deploy hygiene. Delivered on-disk ETS inspector persistence with reconciliation and stability improvements; fixed hash collision handling in shape definitions with tests; added OpenTelemetry logging and enriched metadata; stabilized benchmarking CI/CD workflow to ensure benchmarks run against current code. These changes enhance data integrity, observability, and measurement credibility, enabling faster iteration and safer deployments.
May 2025
6 Commits • 3 Features
May 1, 2025May 2025 performance summary for electric-sql/electric focused on reliability, observability, and deploy hygiene. Delivered on-disk ETS inspector persistence with reconciliation and stability improvements; fixed hash collision handling in shape definitions with tests; added OpenTelemetry logging and enriched metadata; stabilized benchmarking CI/CD workflow to ensure benchmarks run against current code. These changes enhance data integrity, observability, and measurement credibility, enabling faster iteration and safer deployments.
April 2025
19 Commits • 5 Features
Apr 1, 2025In April 2025, electric-sql/electric delivered robust replication and schema integrity enhancements, flexible replication slot configuration, and non-blocking health metrics reporting, underpinned by practical documentation and dependency updates. These changes improve data consistency, restart resilience, and overall system stability across deployments, enabling safer migrations and more reliable real-time replication for customers.
19 Commits • 5 Features
Apr 1, 2025In April 2025, electric-sql/electric delivered robust replication and schema integrity enhancements, flexible replication slot configuration, and non-blocking health metrics reporting, underpinned by practical documentation and dependency updates. These changes improve data consistency, restart resilience, and overall system stability across deployments, enabling safer migrations and more reliable real-time replication for customers.
April 2025
March 2025
11 Commits • 5 Features
Mar 1, 2025March 2025 highlights for electric-sql/electric: targeted features and reliability work focused on data integrity, observability, performance, and security. Deliverables improved full replica auditing, enhanced observability, memory- and throughput-optimized sync operations, and safer query construction across server and clients, while stabilizing alter-table lock behavior and maintaining release hygiene.
March 2025
11 Commits • 5 Features
Mar 1, 2025March 2025 highlights for electric-sql/electric: targeted features and reliability work focused on data integrity, observability, performance, and security. Deliverables improved full replica auditing, enhanced observability, memory- and throughput-optimized sync operations, and safer query construction across server and clients, while stabilizing alter-table lock behavior and maintaining release hygiene.
February 2025
7 Commits • 4 Features
Feb 1, 2025February 2025 (Month: 2025-02) — Electric-sql/electric: Delivered architectural and reliability enhancements focused on data integrity, security, observability, and client synchronization, alongside targeted bug fixes that improve upgrade safety and operational reliability. Key features delivered: - Wire Protocol Modernization: Removed offset field and introduced lsn and op_position headers to simplify offset management and enable finer-grained transaction/operation ordering for future concurrency handling. (Commit: f1a9247b377dba20fa49e17885b3855cb84926be) - Detailed LSN Progress in Sync (Persistent): Exposed the last-processed LSN in up-to-date messages and added persistent storage so clients can track synchronization progress with finer granularity. (Commit: b84cd5c5d0a667a1d728800518d2984e73f5aeda) - Selective Schema Exposure (Security/Performance): Only include details for explicitly selected columns in generated schema, reducing data transfer and improving security by avoiding exposure of unselected columns. (Commit: 0d71dc44a9ba1cf417f2b7f60aab775d883529a6) - Observability Enhancements for Snapshot Operations: Improve tracing of snapshot creation by threading otel_ctx through snapshot operations, and minor logging/error handling improvements to enhance operational visibility. (Commit: f8a94aa48682ea364ca14dc9b6552278bfc5cf24) Major bugs fixed: - Leak Prevention in Log Compaction: Prevent retention of transaction IDs in compacted log lines and ensure first compaction headers do not include txid, improving data integrity and preventing outdated references. (Commit: 802680fdf92565571563dc27ec74a0af77fc1344) - Filesystem KV Migration Stability: Fix data handling and migration robustness for filesystem KV store: ensure LSN is stored as a numeric Elixir term and provide a safe upgrade path when format changes, addressing string-vs-term storage and related tests. (Commits: 126317f46a5e54aa18c827bec257140e1913eb54; 2f5b7d4899a1a6ff409ef67283de4e6f722ac831) Overall impact and accomplishments: - Strengthened data integrity, security posture, and upgrade safety while delivering improved client synchronization visibility and future concurrency readiness. The work reduces risk of stale references, lowers data transfer for schema metadata, and enhances observability for operational troubleshooting. Technologies/skills demonstrated: - Distributed protocol thinking with wire-level header changes; OpenTelemetry-based observability implementation; Elixir data typing and term handling for upgrade paths; client synchronization semantics with LSN tracking; secure schema generation controls and data exposure policies.
7 Commits • 4 Features
Feb 1, 2025February 2025 (Month: 2025-02) — Electric-sql/electric: Delivered architectural and reliability enhancements focused on data integrity, security, observability, and client synchronization, alongside targeted bug fixes that improve upgrade safety and operational reliability. Key features delivered: - Wire Protocol Modernization: Removed offset field and introduced lsn and op_position headers to simplify offset management and enable finer-grained transaction/operation ordering for future concurrency handling. (Commit: f1a9247b377dba20fa49e17885b3855cb84926be) - Detailed LSN Progress in Sync (Persistent): Exposed the last-processed LSN in up-to-date messages and added persistent storage so clients can track synchronization progress with finer granularity. (Commit: b84cd5c5d0a667a1d728800518d2984e73f5aeda) - Selective Schema Exposure (Security/Performance): Only include details for explicitly selected columns in generated schema, reducing data transfer and improving security by avoiding exposure of unselected columns. (Commit: 0d71dc44a9ba1cf417f2b7f60aab775d883529a6) - Observability Enhancements for Snapshot Operations: Improve tracing of snapshot creation by threading otel_ctx through snapshot operations, and minor logging/error handling improvements to enhance operational visibility. (Commit: f8a94aa48682ea364ca14dc9b6552278bfc5cf24) Major bugs fixed: - Leak Prevention in Log Compaction: Prevent retention of transaction IDs in compacted log lines and ensure first compaction headers do not include txid, improving data integrity and preventing outdated references. (Commit: 802680fdf92565571563dc27ec74a0af77fc1344) - Filesystem KV Migration Stability: Fix data handling and migration robustness for filesystem KV store: ensure LSN is stored as a numeric Elixir term and provide a safe upgrade path when format changes, addressing string-vs-term storage and related tests. (Commits: 126317f46a5e54aa18c827bec257140e1913eb54; 2f5b7d4899a1a6ff409ef67283de4e6f722ac831) Overall impact and accomplishments: - Strengthened data integrity, security posture, and upgrade safety while delivering improved client synchronization visibility and future concurrency readiness. The work reduces risk of stale references, lowers data transfer for schema metadata, and enhances observability for operational troubleshooting. Technologies/skills demonstrated: - Distributed protocol thinking with wire-level header changes; OpenTelemetry-based observability implementation; Elixir data typing and term handling for upgrade paths; client synchronization semantics with LSN tracking; secure schema generation controls and data exposure policies.
February 2025
January 2025
3 Commits • 2 Features
Jan 1, 2025January 2025 monthly wrap-up for electric-sql/electric focusing on platform modernization, enhanced observability, and stability improvements. Key changes include a tooling modernization to Elixir 1.18.1, Erlang 27.2, and a Docker base image update; addition of Honeycomb/OpenTelemetry metrics with HTTP/2 and protobuf encoding; and a bug fix ensuring robust JSON parsing when reading concurrently written chunked snapshots. Tests were added to cover the concurrent-read scenario.
January 2025
3 Commits • 2 Features
Jan 1, 2025January 2025 monthly wrap-up for electric-sql/electric focusing on platform modernization, enhanced observability, and stability improvements. Key changes include a tooling modernization to Elixir 1.18.1, Erlang 27.2, and a Docker base image update; addition of Honeycomb/OpenTelemetry metrics with HTTP/2 and protobuf encoding; and a bug fix ensuring robust JSON parsing when reading concurrently written chunked snapshots. Tests were added to cover the concurrent-read scenario.
December 2024
10 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for electric-sql/electric focusing on delivering robust telemetry, reliable data synchronization, improved error visibility, and CI/CD alignment. Key features delivered and several critical fixes across the Electric sync service improved production reliability, observability, and developer efficiency.
10 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for electric-sql/electric focusing on delivering robust telemetry, reliable data synchronization, improved error visibility, and CI/CD alignment. Key features delivered and several critical fixes across the Electric sync service improved production reliability, observability, and developer efficiency.
December 2024
November 2024
11 Commits • 4 Features
Nov 1, 2024November 2024 focused on delivering scalable architecture, simplifying maintenance, and accelerating release cycles while ensuring reliability across critical surfaces. Key work includes introducing a multi-tenant architecture with an external control plane and data isolation (defaulting to single-tenant when external data is unavailable), and refactoring the app to be usable as a library; removing multitenancy from the Cloud Sync Service to reduce code complexity; enhancing the Electric Client with HTTP/1 support and URI-based endpoint/base_url configuration; tightening CI/CD and publishing workflows; and stabilizing content and API surfaces through targeted fixes.
November 2024
11 Commits • 4 Features
Nov 1, 2024November 2024 focused on delivering scalable architecture, simplifying maintenance, and accelerating release cycles while ensuring reliability across critical surfaces. Key work includes introducing a multi-tenant architecture with an external control plane and data isolation (defaulting to single-tenant when external data is unavailable), and refactoring the app to be usable as a library; removing multitenancy from the Cloud Sync Service to reduce code complexity; enhancing the Electric Client with HTTP/1 support and URI-based endpoint/base_url configuration; tightening CI/CD and publishing workflows; and stabilizing content and API surfaces through targeted fixes.
October 2024
1 Commits
Oct 1, 2024Monthly summary for 2024-10 focusing on concurrency safety improvements in electric-sql/electric. The work primarily addressed a deadlock and race-condition scenario in Publication Update flows, delivering a safer and more reliable publishing workflow under concurrent usage.
1 Commits
Oct 1, 2024Monthly summary for 2024-10 focusing on concurrency safety improvements in electric-sql/electric. The work primarily addressed a deadlock and race-condition scenario in Publication Update flows, delivering a safer and more reliable publishing workflow under concurrent usage.
October 2024
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Quality Metrics
Correctness89.2%
Maintainability85.8%
Architecture85.4%
Performance82.2%
AI Usage20.6%
Skills & Technologies
Programming Languages
ElixirErlangJSONJavaScriptLuxincMarkdownSQLShellTypeScriptVue
Technical Skills
API ConfigurationAPI DesignAPI DevelopmentAPI IntegrationAlgorithmsBackend DevelopmentBuild AutomationBuild ProcessBuild ToolsCI/CDCachingClient-Server CommunicationCode CleanupCode DocumentationCodebase Maintenance
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