VKCOM/statshouse
Oct 2024 – Feb 2026
13 Months active
Languages Used
GoTLDockerfileShellJSONSQLTypeScriptYAML
Technical Skills
Backend DevelopmentData AggregationData ModelingDatabase IntegrationGoPerformance Optimization
Sergei Razmetov
PROFILE
Sergei Razmetov
Sergey Razumov engineered core analytics and backend infrastructure for VKCOM/statshouse, delivering over a hundred features and dozens of bug fixes in Go, Rust, and SQL. He architected scalable data ingestion, sharding, and migration pipelines, focusing on robust API development, data modeling, and performance optimization. Sergey introduced flexible tagging, advanced metric tracking, and reliable serialization, while enhancing observability and deployment reliability. His work included SQLite-based caching, ClickHouse integration, and CI/CD automation, with careful attention to code quality and maintainability. By aligning APIs, tests, and telemetry, Sergey ensured consistent, high-quality data flows and streamlined operational workflows across the repository.
Overall Statistics
Feature vs Bugs
68%Features
Repository Contributions
258Total
Bugs
53
Commits
258
Features
113
Lines of code
42,775
Activity Months13
Your Network
16 peopleShared Repositories
16
Alexander HasselbachMember
Andrey BobelevMember
Danil OvchinnikovMember
Evgeny MartynMember
Grigory ButeykoMember
Nikolay KlimovMember
Mikhail AlpinskiyMember
Naumenko OlgaMember
Naumenko OlgaMember
Work History
February 2026
1 Commits
Feb 1, 2026February 2026: Focused on API reliability and data quality in VKCOM/statshouse. Implemented a robustness improvement so the metric field is always present in JSON output, even when there are no tags, by removing omitempty in JSON marshaling. This change strengthens API consistency for clients and simplifies data consumption downstream.
1 Commits
Feb 1, 2026February 2026: Focused on API reliability and data quality in VKCOM/statshouse. Implemented a robustness improvement so the metric field is always present in JSON output, even when there are no tags, by removing omitempty in JSON marshaling. This change strengthens API consistency for clients and simplifies data consumption downstream.
February 2026
January 2026
3 Commits • 3 Features
Jan 1, 2026January 2026 highlights for VKCOM/statshouse: delivered precision metric control, improved API compatibility, and enhanced observability. Key outcomes include hardware resolution flags in API configuration with a DB initialization fix, Rust language support in client write error metrics, and a Prometheus API enhancement returning a time-series vector with a new data structure. These changes improve metric resolution accuracy, alerting reliability, and API compatibility for VMAlerts, enabling faster troubleshooting and business insights.
January 2026
3 Commits • 3 Features
Jan 1, 2026January 2026 highlights for VKCOM/statshouse: delivered precision metric control, improved API compatibility, and enhanced observability. Key outcomes include hardware resolution flags in API configuration with a DB initialization fix, Rust language support in client write error metrics, and a Prometheus API enhancement returning a time-series vector with a new data structure. These changes improve metric resolution accuracy, alerting reliability, and API compatibility for VMAlerts, enabling faster troubleshooting and business insights.
September 2025
21 Commits • 10 Features
Sep 1, 2025September 2025 (VKCOM/statshouse) delivered API configurability, migration reliability, and build/deploy hardening with notable improvements in governance, observability, and security. Business value was advanced through configurable query settings and feature gates, a more robust migration pipeline, and stabilized container builds that support faster, safer releases.
21 Commits • 10 Features
Sep 1, 2025September 2025 (VKCOM/statshouse) delivered API configurability, migration reliability, and build/deploy hardening with notable improvements in governance, observability, and security. Business value was advanced through configurable query settings and feature gates, a more robust migration pipeline, and stabilized container builds that support faster, safer releases.
September 2025
August 2025
35 Commits • 10 Features
Aug 1, 2025August 2025 performance summary for VKCOM/statshouse focusing on delivering business value, stabilizing migrations, and advancing data modeling capabilities. The month featured targeted feature delivery, substantial reliability improvements, and groundwork for scalable analytics pipelines.
August 2025
35 Commits • 10 Features
Aug 1, 2025August 2025 performance summary for VKCOM/statshouse focusing on delivering business value, stabilizing migrations, and advancing data modeling capabilities. The month featured targeted feature delivery, substantial reliability improvements, and groundwork for scalable analytics pipelines.
July 2025
9 Commits • 4 Features
Jul 1, 20252025-07 VKCOM/statshouse monthly summary: Key features delivered and major fixes: 1) SQLite-based disk cache backend (sqlitecache) implemented to replace the generic disk cache, boosting performance and reliability. 2) Ingress performance improvements: enabled pprof profiling endpoint and tuned buffer sizes for the packetconn to boost throughput and stability. 3) Codebase naming/import consistency fixes: corrected case sensitivity in statshouse-go imports and standardized VKCOM naming across the codebase. 4) Build/deployment reliability: CGO disabled for statshouse binary (CGO_ENABLED=0) to improve portability. 5) Local development tooling and docs: added run-in-tmux.sh, updated docs to localdebug workflow, and removed obsolete localrun.sh, simplifying local setup.
9 Commits • 4 Features
Jul 1, 20252025-07 VKCOM/statshouse monthly summary: Key features delivered and major fixes: 1) SQLite-based disk cache backend (sqlitecache) implemented to replace the generic disk cache, boosting performance and reliability. 2) Ingress performance improvements: enabled pprof profiling endpoint and tuned buffer sizes for the packetconn to boost throughput and stability. 3) Codebase naming/import consistency fixes: corrected case sensitivity in statshouse-go imports and standardized VKCOM naming across the codebase. 4) Build/deployment reliability: CGO disabled for statshouse binary (CGO_ENABLED=0) to improve portability. 5) Local development tooling and docs: added run-in-tmux.sh, updated docs to localdebug workflow, and removed obsolete localrun.sh, simplifying local setup.
July 2025
June 2025
22 Commits • 7 Features
Jun 1, 2025June 2025 (2025-06) Monthly summary for VKCOM/statshouse. Delivered foundational architecture improvements, bootstrap initialization, policy enforcement, and reliability enhancements with clear business value: more predictable deployments, stronger security/compliance, and improved test stability. Key outcomes include a19 default sharding and conveyor setup with old path removal, bootstrap mapping initialization and a dedicated put_tag_bootstrap tool, enforcement of policy against older agents, RPC stability improvements (crypto_key length enforcement and forward.go rename), telemetry and cleanup improvements (new __src_disk_cache_size metric and removal of sqlite cache), and alignment of APIs and tests to a 47-tag paradigm. Evidence of delivery spans multiple commits, including a71a2db493491cf357804bc9fc19c66e2d1401b8, f05ece10167ea15fbce0521419ab361255e126e5, f0ec91e739653163f316b881af2d396b674b32bb, c1de8462754c23d09f86717e825354251bee534e, 9cc5740d2efadcc824a83eed5152396feea9a984, fa1121cc81918f5c68ad391e3e10813f8a63267d, 7928b1323fe47f67dac30c77c55be764da1e9916, d43915a9f9a0050c8e09bf6dfea439b1aca0ae4a, 524d619da3191c370fbdf9dcd1e3f332e534e9d9, 9433eb729a381eed3c7ed3594ed8ea77b78942a4.
June 2025
22 Commits • 7 Features
Jun 1, 2025June 2025 (2025-06) Monthly summary for VKCOM/statshouse. Delivered foundational architecture improvements, bootstrap initialization, policy enforcement, and reliability enhancements with clear business value: more predictable deployments, stronger security/compliance, and improved test stability. Key outcomes include a19 default sharding and conveyor setup with old path removal, bootstrap mapping initialization and a dedicated put_tag_bootstrap tool, enforcement of policy against older agents, RPC stability improvements (crypto_key length enforcement and forward.go rename), telemetry and cleanup improvements (new __src_disk_cache_size metric and removal of sqlite cache), and alignment of APIs and tests to a 47-tag paradigm. Evidence of delivery spans multiple commits, including a71a2db493491cf357804bc9fc19c66e2d1401b8, f05ece10167ea15fbce0521419ab361255e126e5, f0ec91e739653163f316b881af2d396b674b32bb, c1de8462754c23d09f86717e825354251bee534e, 9cc5740d2efadcc824a83eed5152396feea9a984, fa1121cc81918f5c68ad391e3e10813f8a63267d, 7928b1323fe47f67dac30c77c55be764da1e9916, d43915a9f9a0050c8e09bf6dfea439b1aca0ae4a, 524d619da3191c370fbdf9dcd1e3f332e534e9d9, 9433eb729a381eed3c7ed3594ed8ea77b78942a4.
April 2025
8 Commits • 6 Features
Apr 1, 2025April 2025: Focused on delivering features and observability improvements to scale analytics, improve query flexibility, and enhance telemetry. No explicit major bugs fixed this month; the work strengthens reliability and performance visibility through refined metrics and tagging across UI, caching, and API telemetry.
8 Commits • 6 Features
Apr 1, 2025April 2025: Focused on delivering features and observability improvements to scale analytics, improve query flexibility, and enhance telemetry. No explicit major bugs fixed this month; the work strengthens reliability and performance visibility through refined metrics and tagging across UI, caching, and API telemetry.
April 2025
March 2025
36 Commits • 24 Features
Mar 1, 2025March 2025 for VKCOM/statshouse delivered a focused set of features and reliability improvements across the aggregator, tagging, and storage layers, translating technical work into measurable business value. Highlights include improved sampling accuracy, expanded tagging and load-gen coverage, centralized metrics exposure via the agent, and storage/sharding optimizations that boost throughput and stability, reinforced by configurability and robust bug fixes.
March 2025
36 Commits • 24 Features
Mar 1, 2025March 2025 for VKCOM/statshouse delivered a focused set of features and reliability improvements across the aggregator, tagging, and storage layers, translating technical work into measurable business value. Highlights include improved sampling accuracy, expanded tagging and load-gen coverage, centralized metrics exposure via the agent, and storage/sharding optimizations that boost throughput and stability, reinforced by configurability and robust bug fixes.
February 2025
47 Commits • 20 Features
Feb 1, 2025February 2025 (Month: 2025-02) delivered a focused set of reliability, performance, and developer-experience improvements for VKCOM/statshouse. Key features and refactors reduced technical debt and improved production readiness, while security and build hygiene updates lowered risk in deployments and CI.
47 Commits • 20 Features
Feb 1, 2025February 2025 (Month: 2025-02) delivered a focused set of reliability, performance, and developer-experience improvements for VKCOM/statshouse. Key features and refactors reduced technical debt and improved production readiness, while security and build hygiene updates lowered risk in deployments and CI.
February 2025
January 2025
45 Commits • 15 Features
Jan 1, 2025January 2025 monthly summary for VKCOM/statshouse. Delivered a broad set of features and reliability fixes across ClickHouse tooling, sharding experiments, load generation, metrics and dashboards, tagging, and CI improvements. Focused on business value: operational efficiency, scalable analytics, and faster time-to-insight through automation, better data quality, and streamlined deployment pipelines.
January 2025
45 Commits • 15 Features
Jan 1, 2025January 2025 monthly summary for VKCOM/statshouse. Delivered a broad set of features and reliability fixes across ClickHouse tooling, sharding experiments, load generation, metrics and dashboards, tagging, and CI improvements. Focused on business value: operational efficiency, scalable analytics, and faster time-to-insight through automation, better data quality, and streamlined deployment pipelines.
December 2024
5 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for VKCOM/statshouse: Completed a focused set of platform improvements across toolchain, framework alignment, throughput, and defaults. Key work includes Go toolchain upgrade to 1.22.x with dependencies refresh and Dockerfile alignment; introduction of context-aware datasource initialization to match the updated framework API; throughput tuning by increasing the metrics mapping queue capacity; and a safety-focused default send configuration change. These changes reduce operational risk, improve performance under load, and simplify future maintenance across the repository.
5 Commits • 4 Features
Dec 1, 2024December 2024 monthly summary for VKCOM/statshouse: Completed a focused set of platform improvements across toolchain, framework alignment, throughput, and defaults. Key work includes Go toolchain upgrade to 1.22.x with dependencies refresh and Dockerfile alignment; introduction of context-aware datasource initialization to match the updated framework API; throughput tuning by increasing the metrics mapping queue capacity; and a safety-focused default send configuration change. These changes reduce operational risk, improve performance under load, and simplify future maintenance across the repository.
December 2024
November 2024
21 Commits • 8 Features
Nov 1, 2024Month: 2024-11 | VKCOM/statshouse — This month focused on strengthening data integrity, pipeline versioning, and end-to-end ingestion to support scalable analytics. Delivered robust tag handling and key construction, standardized time/format mappings, and introduced versioned pipeline paths (pipeline_v2 with V3 support) along with multi-item API refactors. Added new telemetry metric and integrated SourceBucket3 ingestion flow with V3-first storage. Also configured load-gen agent address for controlled load testing.
November 2024
21 Commits • 8 Features
Nov 1, 2024Month: 2024-11 | VKCOM/statshouse — This month focused on strengthening data integrity, pipeline versioning, and end-to-end ingestion to support scalable analytics. Delivered robust tag handling and key construction, standardized time/format mappings, and introduced versioned pipeline paths (pipeline_v2 with V3 support) along with multi-item API refactors. Added new telemetry metric and integrated SourceBucket3 ingestion flow with V3-first storage. Also configured load-gen agent address for controlled load testing.
October 2024
5 Commits • 2 Features
Oct 1, 2024October 2024: Focused on strengthening data integrity and tagging capabilities in VKCOM/statshouse. Delivered key size estimation and TL encoding reliability improvements, along with rigorous tests to ensure 4-byte alignment and TL round-trips. Enhanced v3 table tagging by supporting read of secondary keys (skeys) from MultiItem, storing STags as string tags, and removing the obsolete stringTagProb config. These changes reduce data-race risks, improve analytics tagging accuracy, and lay groundwork for future updates.
5 Commits • 2 Features
Oct 1, 2024October 2024: Focused on strengthening data integrity and tagging capabilities in VKCOM/statshouse. Delivered key size estimation and TL encoding reliability improvements, along with rigorous tests to ensure 4-byte alignment and TL round-trips. Enhanced v3 table tagging by supporting read of secondary keys (skeys) from MultiItem, storing STags as string tags, and removing the obsolete stringTagProb config. These changes reduce data-race risks, improve analytics tagging accuracy, and lay groundwork for future updates.
October 2024
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Quality Metrics
Correctness90.4%
Maintainability89.4%
Architecture86.8%
Performance85.0%
AI Usage21.0%
Skills & Technologies
Programming Languages
BashCSSDockerfileGoJSONJavaScriptMakefileMarkdownRustSQL
Technical Skills
API Client DevelopmentAPI DesignAPI DevelopmentAPI IntegrationAgent DevelopmentAlgorithm OptimizationBackend DevelopmentBackend IntegrationBug FixBuild AutomationBuild ScriptingBuild SystemBuild SystemsCI/CDCLI Development
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