pgEdge/spock
Nov 2024 – Mar 2026
17 Months active
Languages Used
CSQLPLpgSQLMakefilePL/pgSQLYAMLShellPerl
Technical Skills
C ProgrammingDatabase DevelopmentDatabase ReplicationLogical DecodingPostgreSQL Extension DevelopmentPostgreSQL Internals
Asif Rehman
PROFILE
Asif Rehman
Asif Raza engineered core replication and synchronization features for the pgEdge/spock repository, focusing on reliability, upgrade safety, and cross-version compatibility. He delivered protocol negotiation for rolling upgrades, robust conflict resolution, and shared-memory–backed progress tracking, all implemented in C and PL/pgSQL. His work included refactoring build systems for PGXS flexibility, enhancing CI/CD pipelines with Docker and GitHub Actions, and improving test automation with Perl scripting. By addressing memory safety, crash recovery, and multi-node replication lag tracking, Asif ensured stable deployments and maintainable code. His contributions reflect deep expertise in PostgreSQL internals, backend development, and system programming.
Overall Statistics
Feature vs Bugs
63%Features
Repository Contributions
87Total
Bugs
21
Commits
87
Features
36
Lines of code
26,698
Activity Months17
Your Network
26 peopleSame Organization
@pgedge.com9
hayee-bhattiMember
Ibrar AhmedMember
Mason SharpMember
Matthew MolsMember
Moiz IbrarMember
moizpgedgeMember
Muhammad AqeelMember
susan-pgedgeMember
Zaid-edgeMember
Shared Repositories
17
Antony PeggMember
Asif RehmanMember
Dave PageMember
Hamid AkhtarMember
Dr. Ibrar AhmedMember
Ibrar AhmedMember
Jan WieckMember
Jason LynchMember
Andrei LepikhovMember
Work History
March 2026
1 Commits
Mar 1, 2026March 2026: Delivered a critical bug fix in pgEdge/spock focused on memory safety and stability under load. The primary contribution was addressing a stack-use-after-scope issue in spock_connect_base that previously allowed a dangling stack pointer to be read by PQconnectdbParams(), risking heap corruption under high load. The fix ensures proper variable scope and eliminates shadowing, improving resilience of connection parameter handling and overall system uptime.
1 Commits
Mar 1, 2026March 2026: Delivered a critical bug fix in pgEdge/spock focused on memory safety and stability under load. The primary contribution was addressing a stack-use-after-scope issue in spock_connect_base that previously allowed a dangling stack pointer to be read by PQconnectdbParams(), risking heap corruption under high load. The fix ensures proper variable scope and eliminates shadowing, improving resilience of connection parameter handling and overall system uptime.
March 2026
February 2026
9 Commits • 3 Features
Feb 1, 2026February 2026: Delivered robust cascade replication origin tracking, lag measurement reliability, and CI workflow hardening in pgEdge/spock, with strengthened test coverage and operational observability. Key work included origin propagation in cascade replication, crash-recovery-safe lag metrics via remote_insert_lsn, and a refactored sync status flow using PostgreSQL's origin status, complemented by CI/installcheck improvements and updated documentation. These changes reduce data provenance ambiguity, improve data consistency across cascaded topologies, and streamline CI pipelines, delivering measurable business value in reliability and deployment velocity.
February 2026
9 Commits • 3 Features
Feb 1, 2026February 2026: Delivered robust cascade replication origin tracking, lag measurement reliability, and CI workflow hardening in pgEdge/spock, with strengthened test coverage and operational observability. Key work included origin propagation in cascade replication, crash-recovery-safe lag metrics via remote_insert_lsn, and a refactored sync status flow using PostgreSQL's origin status, complemented by CI/installcheck improvements and updated documentation. These changes reduce data provenance ambiguity, improve data consistency across cascaded topologies, and streamline CI pipelines, delivering measurable business value in reliability and deployment velocity.
January 2026
6 Commits • 4 Features
Jan 1, 2026Month: 2026-01. This period focused on hardening core replication reliability (Z0DAN) in pgEdge/spock, improving test infrastructure, and simplifying extension testing workflows, while keeping compliance up-to-date. Key outcomes include advancing replication slot logic to use authoritative commit LSNs, fixing a memory leak and assertion bug, tightening TAP-based test visibility, and streamlining the Makefile for daily extension testing. These changes deliver measurable business value through more reliable multi-node replication, faster triage through centralized logs, and easier build/test pipelines.
6 Commits • 4 Features
Jan 1, 2026Month: 2026-01. This period focused on hardening core replication reliability (Z0DAN) in pgEdge/spock, improving test infrastructure, and simplifying extension testing workflows, while keeping compliance up-to-date. Key outcomes include advancing replication slot logic to use authoritative commit LSNs, fixing a memory leak and assertion bug, tightening TAP-based test visibility, and streamlining the Makefile for daily extension testing. These changes deliver measurable business value through more reliable multi-node replication, faster triage through centralized logs, and easier build/test pipelines.
January 2026
December 2025
7 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for pgEdge/spock. Key delivery focused on enterprise-grade upgrade reliability, robust failure handling, and maintainability improvements across a single repository. Business value delivered includes safer rolling upgrades, improved recovery stability, and stronger test coverage.
December 2025
7 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for pgEdge/spock. Key delivery focused on enterprise-grade upgrade reliability, robust failure handling, and maintainability improvements across a single repository. Business value delivered includes safer rolling upgrades, improved recovery stability, and stronger test coverage.
November 2025
2 Commits • 2 Features
Nov 1, 20252025-11 Monthly Summary — pgEdge/spock Key features delivered: - Implemented PostgreSQL Spock checkpoint integration by wiring a checkpoint hook into Spock's resource manager to dump group state and emit per-group progress records to WAL during checkpointing. This enables accurate replication progress restoration after crashes or restarts. - Updated PostgreSQL commit clock patches for versions 15–18 to align with upstream changes (reordered/expanded xlog.h prototype block and added ResetInstallXLogFileSegmentActive); the changes are structural and do not modify functionality but preserve patch applicability. Major bugs fixed: - Resolved patch application failures caused by upstream xlog.h changes by rebasing the -025-logical_commit_clock series across REL_15..REL_18, ensuring clean git apply without functional changes. Overall impact and accomplishments: - Strengthened replication resilience and crash/restart recovery through checkpoint data persistence and WAL progress emission. - Improved maintainability and upgrade readiness across PostgreSQL versions, reducing patch-related risks in future releases. - Demonstrated end-to-end capability to extend PostgreSQL with lifecycle-aware hooks and robust patch maintenance. Technologies/skills demonstrated: - PostgreSQL extension development (checkpoint hooks, WAL, Spock resource manager) - Patch maintenance across multiple PostgreSQL versions (REL_15..REL_18) - Git-based patch workflows, diff hygiene, and compatibility-focused refactoring
2 Commits • 2 Features
Nov 1, 20252025-11 Monthly Summary — pgEdge/spock Key features delivered: - Implemented PostgreSQL Spock checkpoint integration by wiring a checkpoint hook into Spock's resource manager to dump group state and emit per-group progress records to WAL during checkpointing. This enables accurate replication progress restoration after crashes or restarts. - Updated PostgreSQL commit clock patches for versions 15–18 to align with upstream changes (reordered/expanded xlog.h prototype block and added ResetInstallXLogFileSegmentActive); the changes are structural and do not modify functionality but preserve patch applicability. Major bugs fixed: - Resolved patch application failures caused by upstream xlog.h changes by rebasing the -025-logical_commit_clock series across REL_15..REL_18, ensuring clean git apply without functional changes. Overall impact and accomplishments: - Strengthened replication resilience and crash/restart recovery through checkpoint data persistence and WAL progress emission. - Improved maintainability and upgrade readiness across PostgreSQL versions, reducing patch-related risks in future releases. - Demonstrated end-to-end capability to extend PostgreSQL with lifecycle-aware hooks and robust patch maintenance. Technologies/skills demonstrated: - PostgreSQL extension development (checkpoint hooks, WAL, Spock resource manager) - Patch maintenance across multiple PostgreSQL versions (REL_15..REL_18) - Git-based patch workflows, diff hygiene, and compatibility-focused refactoring
November 2025
October 2025
5 Commits • 1 Features
Oct 1, 2025October 2025 (pgEdge/spock): Delivered reliability and robustness improvements across data synchronization, DDL handling, and script execution. Introduced a Spock resource manager with in-memory apply-progress tracking and WAL persistence, reducing catalog writes and improving crash recovery. Fixed crashes when relations are missing, guarded DDL replication during extension script execution, and enhanced SQL script robustness with schema-qualified cleanup and cleaned up keyword usage. These changes improve production stability, data integrity, and operational resilience, while demonstrating strong capabilities in system design, persistence strategies, and test coverage.
October 2025
5 Commits • 1 Features
Oct 1, 2025October 2025 (pgEdge/spock): Delivered reliability and robustness improvements across data synchronization, DDL handling, and script execution. Introduced a Spock resource manager with in-memory apply-progress tracking and WAL persistence, reducing catalog writes and improving crash recovery. Fixed crashes when relations are missing, guarded DDL replication during extension script execution, and enhanced SQL script robustness with schema-qualified cleanup and cleaned up keyword usage. These changes improve production stability, data integrity, and operational resilience, while demonstrating strong capabilities in system design, persistence strategies, and test coverage.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 (pgEdge/spock): Implemented CI feature to collect and upload regression and TAP test artifacts from Docker containers, enhancing test observability and debuggability. Artifacts are copied from containers and uploaded as workflow artifacts for post-run inspection. This improves reproducibility and accelerates issue diagnosis in CI pipelines. No notable bug fixes this month; primary focus on delivering business value through better test visibility and artifact availability.
1 Commits • 1 Features
Sep 1, 2025September 2025 (pgEdge/spock): Implemented CI feature to collect and upload regression and TAP test artifacts from Docker containers, enhancing test observability and debuggability. Artifacts are copied from containers and uploaded as workflow artifacts for post-run inspection. This improves reproducibility and accelerates issue diagnosis in CI pipelines. No notable bug fixes this month; primary focus on delivering business value through better test visibility and artifact availability.
September 2025
August 2025
2 Commits • 2 Features
Aug 1, 2025August 2025 monthly summary for pgEdge/spock focusing on build reliability and maintainability. Delivered two high-impact items: 1) Flexible PGXS build configuration with overridable PG_CONFIG to ensure correct pg_config is used across environments; implemented by exporting PG_CONFIG and passing it to sub-makes, eliminating hardcoded calls. 2) Codebase reorganization and CI hardening: restructured source tree into logical directories (src/, include/, sql/, utils/, tests/, patches/, docs/), simplified and hardened the PGXS build process, and updated CI workflows. These changes improve build consistency, reduce environment-specific failures, and enhance maintainability and onboarding. Impact: improved cross-environment reliability, faster CI feedback, cleaner project structure enabling future feature work. Technologies/skills demonstrated: PGXS, make-based build processes, environment variable management, CI/CD, repository restructuring, documentation alignment.
August 2025
2 Commits • 2 Features
Aug 1, 2025August 2025 monthly summary for pgEdge/spock focusing on build reliability and maintainability. Delivered two high-impact items: 1) Flexible PGXS build configuration with overridable PG_CONFIG to ensure correct pg_config is used across environments; implemented by exporting PG_CONFIG and passing it to sub-makes, eliminating hardcoded calls. 2) Codebase reorganization and CI hardening: restructured source tree into logical directories (src/, include/, sql/, utils/, tests/, patches/, docs/), simplified and hardened the PGXS build process, and updated CI workflows. These changes improve build consistency, reduce environment-specific failures, and enhance maintainability and onboarding. Impact: improved cross-environment reliability, faster CI feedback, cleaner project structure enabling future feature work. Technologies/skills demonstrated: PGXS, make-based build processes, environment variable management, CI/CD, repository restructuring, documentation alignment.
July 2025
9 Commits • 4 Features
Jul 1, 2025July 2025 summary for pgEdge/spock: core replication reliability improvements, enhanced lag observability, Spock 5.0 upgrade readiness, and CI/CD workflow enhancements.
9 Commits • 4 Features
Jul 1, 2025July 2025 summary for pgEdge/spock: core replication reliability improvements, enhanced lag observability, Spock 5.0 upgrade readiness, and CI/CD workflow enhancements.
July 2025
June 2025
13 Commits • 4 Features
Jun 1, 2025June 2025—continued maturation of the Spock replication stack in pgEdge/spock. Delivered correctness and reliability improvements across replication progress timing, snapshot handling, and conflict resolution; expanded compatibility with older PostgreSQL versions and partial-indexed conflict detection; improved observability, tests, and build portability. These changes deliver measurable business value by reducing replication errors, ensuring upstream compatibility, and enabling safer, faster deployments.
June 2025
13 Commits • 4 Features
Jun 1, 2025June 2025—continued maturation of the Spock replication stack in pgEdge/spock. Delivered correctness and reliability improvements across replication progress timing, snapshot handling, and conflict resolution; expanded compatibility with older PostgreSQL versions and partial-indexed conflict detection; improved observability, tests, and build portability. These changes deliver measurable business value by reducing replication errors, ensuring upstream compatibility, and enabling safer, faster deployments.
May 2025
10 Commits • 3 Features
May 1, 2025May 2025 monthly summary for pgEdge/spock: Delivered core reliability and compatibility enhancements across the Spock extension, strengthening data integrity, replication robustness, and upgrade readiness. Implementations include new index-based INSERT conflict resolution fallback, multi-version compatibility across PostgreSQL 15–17, hardened replication session management during errors, and seconds-based wait time tracking in the upgrade script. These changes reduce failure modes, improve observability, and streamline upgrade paths, delivering tangible business value in production stability and maintenance efficiency.
10 Commits • 3 Features
May 1, 2025May 2025 monthly summary for pgEdge/spock: Delivered core reliability and compatibility enhancements across the Spock extension, strengthening data integrity, replication robustness, and upgrade readiness. Implementations include new index-based INSERT conflict resolution fallback, multi-version compatibility across PostgreSQL 15–17, hardened replication session management during errors, and seconds-based wait time tracking in the upgrade script. These changes reduce failure modes, improve observability, and streamline upgrade paths, delivering tangible business value in production stability and maintenance efficiency.
May 2025
April 2025
11 Commits • 4 Features
Apr 1, 2025April 2025 performance summary for pgEdge/spock focused on reliability, correctness, and maintainability. Delivered key features strengthening synchronization, conflict handling, and data modification logging, alongside an important PostgreSQL 17 compatibility bug fix. These efforts reduce downtime, improve data integrity, and simplify maintenance across the replication stack.
April 2025
11 Commits • 4 Features
Apr 1, 2025April 2025 performance summary for pgEdge/spock focused on reliability, correctness, and maintainability. Delivered key features strengthening synchronization, conflict handling, and data modification logging, alongside an important PostgreSQL 17 compatibility bug fix. These efforts reduce downtime, improve data integrity, and simplify maintenance across the replication stack.
March 2025
1 Commits
Mar 1, 2025March 2025: pgEdge/spock — Key stability and API improvements for the event-wait and apply-group flow. Fixed local_node locking during event waits, optimized latch waiting, and made apply group index management more robust via public API changes. Implemented in commit b41305f8a1529c5e4a89f01293cfd4859fe5c926. These changes reduce contention, improve reliability, and simplify future maintenance.
1 Commits
Mar 1, 2025March 2025: pgEdge/spock — Key stability and API improvements for the event-wait and apply-group flow. Fixed local_node locking during event waits, optimized latch waiting, and made apply group index management more robust via public API changes. Implemented in commit b41305f8a1529c5e4a89f01293cfd4859fe5c926. These changes reduce contention, improve reliability, and simplify future maintenance.
March 2025
February 2025
4 Commits • 1 Features
Feb 1, 2025February 2025 (2025-02) — Delivered substantial enhancements to Spock's replication lag monitoring, focusing on accuracy, performance, and upgrade readiness. Implemented provider-node–based lag tracking, enhanced WAL insert location metrics, and a revamped lag data model with shared-memory access to reduce read latency. Added receiver_name to the lag tracking view for clearer cross-node correlation. Refactored the lag tracker and wait-event logic to rely on shared memory rather than direct table queries, delivering near real-time visibility. Updated migration path for 4.0.x -> 4.1.0 to ensure smooth upgrades. These changes improve reliability, speed diagnostics, and business confidence in replication integrity.
February 2025
4 Commits • 1 Features
Feb 1, 2025February 2025 (2025-02) — Delivered substantial enhancements to Spock's replication lag monitoring, focusing on accuracy, performance, and upgrade readiness. Implemented provider-node–based lag tracking, enhanced WAL insert location metrics, and a revamped lag data model with shared-memory access to reduce read latency. Added receiver_name to the lag tracking view for clearer cross-node correlation. Refactored the lag tracker and wait-event logic to rely on shared memory rather than direct table queries, delivering near real-time visibility. Updated migration path for 4.0.x -> 4.1.0 to ensure smooth upgrades. These changes improve reliability, speed diagnostics, and business confidence in replication integrity.
January 2025
2 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for pgEdge/spock focusing on API clarity, upgrade readiness, and business-value driven improvements. Delivered API refinements and data model enhancements that streamline cross-version migrations and reduce deployment risk.
2 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for pgEdge/spock focusing on API clarity, upgrade readiness, and business-value driven improvements. Delivered API refinements and data model enhancements that streamline cross-version migrations and reduce deployment risk.
January 2025
December 2024
1 Commits
Dec 1, 2024December 2024: pgEdge/spock focused on reliability and efficiency of data replication. Delivered a critical bug fix to skip unchanged columns during replication, reducing unnecessary data transfer while preserving data integrity. This change improves replication throughput and lowers bandwidth usage in typical workflows.
December 2024
1 Commits
Dec 1, 2024December 2024: pgEdge/spock focused on reliability and efficiency of data replication. Delivered a critical bug fix to skip unchanged columns during replication, reducing unnecessary data transfer while preserving data integrity. This change improves replication throughput and lowers bandwidth usage in typical workflows.
November 2024
3 Commits • 3 Features
Nov 1, 2024Month 2024-11: Delivered core Spock synchronization features and protocol readiness that improve cross-component coordination, data consistency, and forward compatibility. The work reduces coordination overhead, speeds up DDL/DML synchronization, and simplifies adoption for users across providers and subscribers.
3 Commits • 3 Features
Nov 1, 2024Month 2024-11: Delivered core Spock synchronization features and protocol readiness that improve cross-component coordination, data consistency, and forward compatibility. The work reduces coordination overhead, speeds up DDL/DML synchronization, and simplifies adoption for users across providers and subscribers.
November 2024
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Quality Metrics
Correctness92.6%
Maintainability87.2%
Architecture88.0%
Performance84.2%
AI Usage24.2%
Skills & Technologies
Programming Languages
CMakefileMarkdownPL/pgSQLPLpgSQLPerlPythonSQLShellYAML
Technical Skills
Backend DevelopmentBuild SystemBuild SystemsC ProgrammingC programmingCI/CDCode OrganizationCode RefactoringCode formattingCode generationCompatibility EngineeringCompiler warningsConcurrency ControlConfiguration ManagementConflict Resolution
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline