AdguardTeam/AdGuardHome
Oct 2024 – Oct 2025
13 Months active
Languages Used
GoMarkdownTypeScriptYAMLJavaScriptCSSHTML
Technical Skills
Backend DevelopmentLoggingRefactoringSystem DesignBug FixingChangelog Management
Stanislav Chzhen
PROFILE
Stanislav Chzhen
Over thirteen months, Stanislav Chzhen engineered core features and reliability improvements for the AdguardTeam/AdGuardHome repository, focusing on backend development, authentication, and system observability. He built and refactored authentication middleware, session management, and user APIs, integrating Go and TypeScript to deliver secure, modular access control. Stanislav enhanced DNS handling, logging, and configuration management, introducing context-aware slog-based logging and robust error handling to streamline debugging and maintenance. His work included optimizing query log searches, implementing configurable DNS policies, and improving test coverage. These contributions deepened system resilience, improved deployment flexibility, and enabled safer, more maintainable rollouts across diverse environments.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
65Total
Bugs
15
Commits
65
Features
31
Lines of code
20,840
Activity Months13
Your Network
59 people
Work History
October 2025
7 Commits • 4 Features
Oct 1, 2025October 2025 monthly summary for AdGuardHome focusing on delivering business value through reliability, observability, and configurable policy controls. The month included integration of first-run logic into the web API (removing global firstrun), a major observability migration to slog across network and HTTP, a refactor to speed up and clarify query log searches, the introduction of a global DNS rewrites toggle with per-rule enablement, and targeted DNS config validation improvements for IPv6 and YAML hints. These changes collectively reduce deployment risk, improve troubleshooting efficiency, and enhance policy-driven DNS behavior.
7 Commits • 4 Features
Oct 1, 2025October 2025 monthly summary for AdGuardHome focusing on delivering business value through reliability, observability, and configurable policy controls. The month included integration of first-run logic into the web API (removing global firstrun), a major observability migration to slog across network and HTTP, a refactor to speed up and clarify query log searches, the introduction of a global DNS rewrites toggle with per-rule enablement, and targeted DNS config validation improvements for IPv6 and YAML hints. These changes collectively reduce deployment risk, improve troubleshooting efficiency, and enhance policy-driven DNS behavior.
October 2025
September 2025
9 Commits • 5 Features
Sep 1, 2025September 2025 (2025-09) development month for AdGuard Home focused on delivering observable improvements, configurable deployment defaults, and performance-oriented refactors, while strengthening build-time/CI quality and cross-platform reliability.
September 2025
9 Commits • 5 Features
Sep 1, 2025September 2025 (2025-09) development month for AdGuard Home focused on delivering observable improvements, configurable deployment defaults, and performance-oriented refactors, while strengthening build-time/CI quality and cross-platform reliability.
August 2025
6 Commits • 2 Features
Aug 1, 2025Monthly performance summary for August 2025 (AdGuardHome repository): Delivered architecture and reliability improvements, enhanced configurability, and robust UI/API features. Key bugs fixed improved stability behind proxies and TLS handling. The collaboration across modules reduced maintenance overhead and accelerated safe rollout of new capabilities, resulting in measurable business value in reliability, user experience, and security.
6 Commits • 2 Features
Aug 1, 2025Monthly performance summary for August 2025 (AdGuardHome repository): Delivered architecture and reliability improvements, enhanced configurability, and robust UI/API features. Key bugs fixed improved stability behind proxies and TLS handling. The collaboration across modules reduced maintenance overhead and accelerated safe rollout of new capabilities, resulting in measurable business value in reliability, user experience, and security.
August 2025
July 2025
3 Commits • 2 Features
Jul 1, 2025Monthly summary for 2025-07 focusing on delivering value through security, reliability, and modularity in AdGuardHome. The month prioritized robust authentication, improved observability, and hardened DoH handling, enabling easier maintenance and scalable deployments.
July 2025
3 Commits • 2 Features
Jul 1, 2025Monthly summary for 2025-07 focusing on delivering value through security, reliability, and modularity in AdGuardHome. The month prioritized robust authentication, improved observability, and hardened DoH handling, enabling easier maintenance and scalable deployments.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for AdGuard Home focusing on business value and technical achievements.
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for AdGuard Home focusing on business value and technical achievements.
June 2025
May 2025
6 Commits • 1 Features
May 1, 20252025-05 Monthly Summary – AdGuardHome (AdguardTeam/AdGuardHome) Key features delivered: - User Authentication System: Implemented an authentication layer with middleware, enabling session cookies and basic authentication to protect resources and manage user access. Added tests to validate auth behavior across the changes. Major bugs fixed: - Custom Cache Issue Fix: Restored correct caching behavior by updating dnsproxy to v0.75.4. - Update Command DNS/TLS Handling Bug: Fixed the CLI --update path when dns.serve_plain_dns is disabled and ensured TLS configuration initializes correctly across DNS serving configurations. Stability and maintenance improvements: - Dependency Updates for Stability: Upgraded dnsproxy, golibs, and other Go modules to newer versions to incorporate bug fixes and performance improvements. Overall impact and accomplishments: - Strengthened security with a robust authentication layer, improved DNS caching reliability, and more stable deployments due to updated dependencies. These changes reduce risk in access control, DNS serving, and runtime stability, and support smoother adoption of future features. Technologies/skills demonstrated: - Go, Go modules, middleware design, session management, TLS configuration, DNS server configuration, testing, and PR-driven development workflow.
May 2025
6 Commits • 1 Features
May 1, 20252025-05 Monthly Summary – AdGuardHome (AdguardTeam/AdGuardHome) Key features delivered: - User Authentication System: Implemented an authentication layer with middleware, enabling session cookies and basic authentication to protect resources and manage user access. Added tests to validate auth behavior across the changes. Major bugs fixed: - Custom Cache Issue Fix: Restored correct caching behavior by updating dnsproxy to v0.75.4. - Update Command DNS/TLS Handling Bug: Fixed the CLI --update path when dns.serve_plain_dns is disabled and ensured TLS configuration initializes correctly across DNS serving configurations. Stability and maintenance improvements: - Dependency Updates for Stability: Upgraded dnsproxy, golibs, and other Go modules to newer versions to incorporate bug fixes and performance improvements. Overall impact and accomplishments: - Strengthened security with a robust authentication layer, improved DNS caching reliability, and more stable deployments due to updated dependencies. These changes reduce risk in access control, DNS serving, and runtime stability, and support smoother adoption of future features. Technologies/skills demonstrated: - Go, Go modules, middleware design, session management, TLS configuration, DNS server configuration, testing, and PR-driven development workflow.
April 2025
9 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for AdGuardHome: Delivered a focused set of features and reliability improvements that enhance security, client management, and DoH/DoT/TLS handling, directly contributing to enterprise-grade reliability and operational efficiency. The work emphasized strong authentication, precise client identification, robust DNS cache behavior with custom upstreams, and improved test stability to reduce CI flakiness and production risk.
9 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for AdGuardHome: Delivered a focused set of features and reliability improvements that enhance security, client management, and DoH/DoT/TLS handling, directly contributing to enterprise-grade reliability and operational efficiency. The work emphasized strong authentication, precise client identification, robust DNS cache behavior with custom upstreams, and improved test stability to reduce CI flakiness and production risk.
April 2025
March 2025
10 Commits • 5 Features
Mar 1, 2025March 2025: Delivered significant reliability, observability, and per-client configurability improvements for AdGuardHome. Key features include a TLS management overhaul with unified validation, logging, and expanded test coverage; client-specific upstream DNS and a clock interface to improve testability and per-client configurations; an enhanced hostname filtering check_host API for targeted diagnostics; and a centralized signal handling mechanism for graceful shutdown. In addition, a DNS cache clear bug fix ensures complete cache eviction across global and per-client caches, a dedicated signal handler improves stability during config reloads, and a test-suite refactor enhances maintainability and package-accurate test organization. Overall, these changes reduce incident risk, improve client-specific performance, and enhance developer velocity through better tests and observability.
March 2025
10 Commits • 5 Features
Mar 1, 2025March 2025: Delivered significant reliability, observability, and per-client configurability improvements for AdGuardHome. Key features include a TLS management overhaul with unified validation, logging, and expanded test coverage; client-specific upstream DNS and a clock interface to improve testability and per-client configurations; an enhanced hostname filtering check_host API for targeted diagnostics; and a centralized signal handling mechanism for graceful shutdown. In addition, a DNS cache clear bug fix ensures complete cache eviction across global and per-client caches, a dedicated signal handler improves stability during config reloads, and a test-suite refactor enhances maintainability and package-accurate test organization. Overall, these changes reduce incident risk, improve client-specific performance, and enhance developer velocity through better tests and observability.
February 2025
2 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for AdGuard Home development focused on delivering configurable reliability features and improving maintainability through a major refactor.
2 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for AdGuard Home development focused on delivering configurable reliability features and improving maintainability through a major refactor.
February 2025
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 (Month: 2025-01) – AdGuard Home engineering delivered reliability improvements and enhanced observability focused on upstream DNS statistics. Key changes include a bug fix for the Filtering Module test scope that eliminates flaky test initializations, and a feature to collect comprehensive upstream DNS query statistics across all servers, including Fastest IP mode, accompanied by a refactor of statistics logging and updates to the changelog and dependencies. These changes improve test stability, visibility into DNS behavior, and support data-driven performance tuning.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 (Month: 2025-01) – AdGuard Home engineering delivered reliability improvements and enhanced observability focused on upstream DNS statistics. Key changes include a bug fix for the Filtering Module test scope that eliminates flaky test initializations, and a feature to collect comprehensive upstream DNS query statistics across all servers, including Fastest IP mode, accompanied by a refactor of statistics logging and updates to the changelog and dependencies. These changes improve test stability, visibility into DNS behavior, and support data-driven performance tuning.
December 2024
3 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for AdGuardHome focusing on reliability, observability, and API enhancements. Delivered three key outcomes: Observability and API reliability improvements with slog, introduction of Advanced Client Lookup API, and stability-focused dependency upgrades addressing race conditions.
3 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for AdGuardHome focusing on reliability, observability, and API enhancements. Delivered three key outcomes: Observability and API reliability improvements with slog, introduction of Advanced Client Lookup API, and stability-focused dependency upgrades addressing race conditions.
December 2024
November 2024
5 Commits • 2 Features
Nov 1, 2024November 2024 monthly summary for AdGuardHome contributions focused on stability, observability, and testing quality. Key work includes fixing DNS Forwarder goroutine leaks, introducing a robust, context-aware logging framework with slog, and strengthening SafeSearch test reliability through mock upstreams. These changes reduce operational risk, improve debuggability, and streamline maintenance.
November 2024
5 Commits • 2 Features
Nov 1, 2024November 2024 monthly summary for AdGuardHome contributions focused on stability, observability, and testing quality. Key work includes fixing DNS Forwarder goroutine leaks, introducing a robust, context-aware logging framework with slog, and strengthening SafeSearch test reliability through mock upstreams. These changes reduce operational risk, improve debuggability, and streamline maintenance.
October 2024
1 Commits • 1 Features
Oct 1, 2024Month: 2024-10. Focused on unifying slog-based logging across AdGuardHome to improve observability, debugging, and maintainability. Delivered global logging integration across components with standardized interfaces and configurations, enabling consistent log collection and actionable insights across the stack.
1 Commits • 1 Features
Oct 1, 2024Month: 2024-10. Focused on unifying slog-based logging across AdGuardHome to improve observability, debugging, and maintainability. Delivered global logging integration across components with standardized interfaces and configurations, enabling consistent log collection and actionable insights across the stack.
October 2024
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Quality Metrics
Correctness89.8%
Maintainability86.2%
Architecture85.2%
Performance80.0%
AI Usage21.8%
Skills & Technologies
Programming Languages
CSSGoHTMLJavaScriptMarkdownTypeScriptYAML
Technical Skills
API DesignAPI DevelopmentAlgorithm OptimizationAuthenticationBackend DevelopmentBug FixingChangelog ManagementCode MaintenanceCode OrganizationCode RefactoringCode StandardizationConfiguration ManagementContext PropagationCross-Platform DevelopmentDNS
Repositories Contributed To
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