
Gui Corre worked extensively on the Gatling ecosystem, building and enhancing features across gatling/gatling-js and related repositories. He developed protocol support for gRPC, MQTT, and SSE, expanding Gatling’s JavaScript and TypeScript SDKs to enable comprehensive load testing for modern real-time applications. His work included robust API design, dependency management, and CI/CD automation, using Java, TypeScript, and Docker to streamline builds and deployments. Gui improved developer experience through detailed documentation, code examples, and cross-language demos, while addressing security and build reliability. His contributions demonstrated depth in backend development, protocol implementation, and continuous integration, resulting in more maintainable, scalable tooling.

October 2025 (2025-10) monthly summary for Gatling development focusing on extending gRPC capabilities, improving developer experience, and strengthening CI/security posture across three repositories. The work delivered broad JavaScript/TypeScript gRPC support, expanded demo projects, and modernized documentation and dependency management. Key outcomes include language-agnostic gRPC samples, more flexible demo environments, improved code quality, and streamlined publishing/maintenance. Key features delivered: - Gatling gRPC samples and JS/TS support: Added comprehensive gRPC sample code for JavaScript and TypeScript and updated docs to reflect JS/TS support (commits: 947032a895b4f93bd920cde57029718c1c4b532f; 108ad6874ab296bfd60024fb0d7f464566efa9d0; e3a302e4d75cd3263d8a35ba77cf893492f501ed). - Demo ecosystem expansion: Introduced JavaScript/TypeScript demo projects and aligned feeder patterns in gatling-grpc-demo (commit: 2a5b5627e5a864099175491677fdf6ef22386c3f). - Security and flexibility in demos: Made mutual TLS optional in the demo server, increasing flexibility for demonstrations and testing (commit: ac94c65d538faf50e2f819520e73838b41964b7f). - Code quality improvements in feeders and logs: Minor formatting improvements in Feeders.java to enhance readability (commit: eb1345d9e146fe0ae229a4e0e72f37a28cd9e183). - CI, dependencies, and docs modernization: Upgraded Gatling docs theme and dependency management for protobuf/gRPC groups; updated Gradle wrapper to 9.1.0 with related config changes (commits: 55924b362b887f9f529df6ae3eb40bd6e941636c; ed50bbc5e2b1ec4fd21839bf81ca5edbc018c0a6; 249d7a4e22c707f026cd828a169dd8705932670b; 9f094d6be5aeb745c81e31e7e408d85ab4d2239a; a4457d78fb38f081bdfd0cc59e5d565ec789cd5d). Major bugs fixed: - Fixed indentation and documentation accuracy for Java gRPC sample code and updated a markdown table to reflect method availability across gRPC call types (commit: 362afe88ae27b080d8b20b556c1983b507457ce9). - Minor readability improvements in code and feeds (Feeders.java) to reduce maintenance friction (commit: eb1345d9e146fe0ae229a4e0e72f37a28cd9e183). Overall impact and accomplishments: - Broadened gRPC language support across the Gatling ecosystem, enabling faster adoption by JS/TS developers and testers. - Enhanced demo realism and flexibility with optional mutual TLS and expanded demo projects. - Improved developer experience through better documentation, examples, and consistent code style. - Strengthened CI, publishing, and security posture via workspace publishing, dependency grouping, and Gradle updates. Technologies/skills demonstrated: - Java, JavaScript/TypeScript, gRPC, Protobuf, Gradle, Dependabot, CI workflows, and Gatling-based simulations. - Documentation ergonomics, sample quality, and cross-repo collaboration.
October 2025 (2025-10) monthly summary for Gatling development focusing on extending gRPC capabilities, improving developer experience, and strengthening CI/security posture across three repositories. The work delivered broad JavaScript/TypeScript gRPC support, expanded demo projects, and modernized documentation and dependency management. Key outcomes include language-agnostic gRPC samples, more flexible demo environments, improved code quality, and streamlined publishing/maintenance. Key features delivered: - Gatling gRPC samples and JS/TS support: Added comprehensive gRPC sample code for JavaScript and TypeScript and updated docs to reflect JS/TS support (commits: 947032a895b4f93bd920cde57029718c1c4b532f; 108ad6874ab296bfd60024fb0d7f464566efa9d0; e3a302e4d75cd3263d8a35ba77cf893492f501ed). - Demo ecosystem expansion: Introduced JavaScript/TypeScript demo projects and aligned feeder patterns in gatling-grpc-demo (commit: 2a5b5627e5a864099175491677fdf6ef22386c3f). - Security and flexibility in demos: Made mutual TLS optional in the demo server, increasing flexibility for demonstrations and testing (commit: ac94c65d538faf50e2f819520e73838b41964b7f). - Code quality improvements in feeders and logs: Minor formatting improvements in Feeders.java to enhance readability (commit: eb1345d9e146fe0ae229a4e0e72f37a28cd9e183). - CI, dependencies, and docs modernization: Upgraded Gatling docs theme and dependency management for protobuf/gRPC groups; updated Gradle wrapper to 9.1.0 with related config changes (commits: 55924b362b887f9f529df6ae3eb40bd6e941636c; ed50bbc5e2b1ec4fd21839bf81ca5edbc018c0a6; 249d7a4e22c707f026cd828a169dd8705932670b; 9f094d6be5aeb745c81e31e7e408d85ab4d2239a; a4457d78fb38f081bdfd0cc59e5d565ec789cd5d). Major bugs fixed: - Fixed indentation and documentation accuracy for Java gRPC sample code and updated a markdown table to reflect method availability across gRPC call types (commit: 362afe88ae27b080d8b20b556c1983b507457ce9). - Minor readability improvements in code and feeds (Feeders.java) to reduce maintenance friction (commit: eb1345d9e146fe0ae229a4e0e72f37a28cd9e183). Overall impact and accomplishments: - Broadened gRPC language support across the Gatling ecosystem, enabling faster adoption by JS/TS developers and testers. - Enhanced demo realism and flexibility with optional mutual TLS and expanded demo projects. - Improved developer experience through better documentation, examples, and consistent code style. - Strengthened CI, publishing, and security posture via workspace publishing, dependency grouping, and Gradle updates. Technologies/skills demonstrated: - Java, JavaScript/TypeScript, gRPC, Protobuf, Gradle, Dependabot, CI workflows, and Gatling-based simulations. - Documentation ergonomics, sample quality, and cross-repo collaboration.
September 2025 focused on delivering cross-repo features and robust build/dependency improvements across Gatling projects, with emphasis on MQTT and gRPC capabilities, improved documentation, and CI/CD automation. The work enhances testing coverage, reliability, and developer productivity by standardizing samples, upgrading core dependencies, and streamlining deployment workflows while maintaining compatibility with Gatling 3.14.x and GraalVM JavaScript.
September 2025 focused on delivering cross-repo features and robust build/dependency improvements across Gatling projects, with emphasis on MQTT and gRPC capabilities, improved documentation, and CI/CD automation. The work enhances testing coverage, reliability, and developer productivity by standardizing samples, upgrading core dependencies, and streamlining deployment workflows while maintaining compatibility with Gatling 3.14.x and GraalVM JavaScript.
2025-08 monthly summary highlighting key business value and technical achievements across three repositories. The focus was on enabling faster, more reliable development and deployment cycles, expanding simulation capabilities, improving dependency hygiene, and clarifying usage to reduce support and runtime issues. Results include stabilized builds, reduced risk from vulnerable dependencies, new MQTT simulation capabilities, and clearer WebSocket processing guidance for users.
2025-08 monthly summary highlighting key business value and technical achievements across three repositories. The focus was on enabling faster, more reliable development and deployment cycles, expanding simulation capabilities, improving dependency hygiene, and clarifying usage to reduce support and runtime issues. Results include stabilized builds, reduced risk from vulnerable dependencies, new MQTT simulation capabilities, and clearer WebSocket processing guidance for users.
July 2025 Highlights: SSE support delivered for Gatling-JS, enabling load testing of real-time SSE apps with new modules and types. Documentation and code examples expanded for SSE in Gatling's JavaScript SDK within gatling.io-doc, including a dedicated JavaScript simulation and updated content across Java/Markdown docs. WebSocket testing enhancements added with comprehensive multi-language documentation and examples (Java, JavaScript/TypeScript, Kotlin, Scala) and improved error handling. Routine maintenance updated GatlingJsVersion to 3.14.306 in data/variables.toml (no functional changes).
July 2025 Highlights: SSE support delivered for Gatling-JS, enabling load testing of real-time SSE apps with new modules and types. Documentation and code examples expanded for SSE in Gatling's JavaScript SDK within gatling.io-doc, including a dedicated JavaScript simulation and updated content across Java/Markdown docs. WebSocket testing enhancements added with comprehensive multi-language documentation and examples (Java, JavaScript/TypeScript, Kotlin, Scala) and improved error handling. Routine maintenance updated GatlingJsVersion to 3.14.306 in data/variables.toml (no functional changes).
May 2025: Delivered substantive improvements across Gatling JS and docs tooling, upgrading core libraries, enhancing test framework capabilities, and hardening build/release processes. These changes improved cross-environment test reliability, alignment with new site endpoints, and faster, safer releases, with updated docs reflecting current capabilities. Windows-specific path handling bug was fixed to prevent file operation errors, improving reliability on Windows CI agents.
May 2025: Delivered substantive improvements across Gatling JS and docs tooling, upgrading core libraries, enhancing test framework capabilities, and hardening build/release processes. These changes improved cross-environment test reliability, alignment with new site endpoints, and faster, safer releases, with updated docs reflecting current capabilities. Windows-specific path handling bug was fixed to prevent file operation errors, improving reliability on Windows CI agents.
March 2025 monthly summary — gatling/gatling.io-doc: Key feature delivered: Documentation clarification for CI shell script usage to improve CI/CD integration with Gatling Enterprise. The docs now explicitly state that the shell script automatically detects the API token from an environment variable and accepts only one parameter: the simulation ID. This alignment reduces configuration errors and accelerates pipeline adoption. Major bugs fixed: No major bugs were logged this month; the focus was on clarifying usage and documentation accuracy to prevent misconfigurations. Overall impact and accomplishments: Enhanced developer experience and faster time-to-value for CI/CD workflows by providing precise, actionable guidance. Reduced potential support questions related to script usage and enabled smoother onboarding for enterprise users. Technologies/skills demonstrated: Technical writing and documentation best practices, CI/CD workflow understanding, shell scripting usage patterns (environment variable token detection), and repository documentation maintenance.
March 2025 monthly summary — gatling/gatling.io-doc: Key feature delivered: Documentation clarification for CI shell script usage to improve CI/CD integration with Gatling Enterprise. The docs now explicitly state that the shell script automatically detects the API token from an environment variable and accepts only one parameter: the simulation ID. This alignment reduces configuration errors and accelerates pipeline adoption. Major bugs fixed: No major bugs were logged this month; the focus was on clarifying usage and documentation accuracy to prevent misconfigurations. Overall impact and accomplishments: Enhanced developer experience and faster time-to-value for CI/CD workflows by providing precise, actionable guidance. Reduced potential support questions related to script usage and enabled smoother onboarding for enterprise users. Technologies/skills demonstrated: Technical writing and documentation best practices, CI/CD workflow understanding, shell scripting usage patterns (environment variable token detection), and repository documentation maintenance.
February 2025: Strengthened test reliability and cross-repo stability across Gatling projects. Key deliveries include including generated test sources in gatling-grpc-demo's test source set and upgrading core plugin dependencies with refreshed simulation locks in gatling-js, aligning development environment and reducing integration risks. Result: faster iteration cycles, fewer flaky builds, and better predictability for performance tests. Skills demonstrated include test/build hygiene, dependency management, CI readiness, cross-team coordination, and automation.
February 2025: Strengthened test reliability and cross-repo stability across Gatling projects. Key deliveries include including generated test sources in gatling-grpc-demo's test source set and upgrading core plugin dependencies with refreshed simulation locks in gatling-js, aligning development environment and reducing integration risks. Result: faster iteration cycles, fewer flaky builds, and better predictability for performance tests. Skills demonstrated include test/build hygiene, dependency management, CI readiness, cross-team coordination, and automation.
January 2025 performance highlights: Feature delivery across gatling-js and Gatling docs, stability improvements for simulation locks, and modernization of tooling and documentation to enable faster releases and better developer onboarding. Improvements include Node.js built-ins support and Postman scripting readiness in gatling-js; a robust simulation lock mechanism to prevent race conditions; GraalVM JDK upgrade and up-to-date copyright headers; CI/CD automation and documentation enhancements in gatling.io-doc; and maintenance-driven dependency upgrades across the stack.
January 2025 performance highlights: Feature delivery across gatling-js and Gatling docs, stability improvements for simulation locks, and modernization of tooling and documentation to enable faster releases and better developer onboarding. Improvements include Node.js built-ins support and Postman scripting readiness in gatling-js; a robust simulation lock mechanism to prevent race conditions; GraalVM JDK upgrade and up-to-date copyright headers; CI/CD automation and documentation enhancements in gatling.io-doc; and maintenance-driven dependency upgrades across the stack.
December 2024 monthly summary for gatling repositories. Focused on stabilizing release processes, expanding packaging capabilities, and improving developer experience across gatling/gatling-js and gatling/gatling.io-doc. Key outcomes include: (a) Release pipeline robustness and artifact handling: stabilized CI flow, ensured checkout before builds, corrected artifact packaging and release flow robustness, and enhanced observability with added job outputs and curl --fail-with-body; (b) Gatling Enterprise packaging enhancements: added support to include external protocol definitions in package manifests; (c) CLI usability improvements: harmonized cloud URL options and improved error messaging related to dependency bundles; (d) Dependency download proxy support: enabled proxy-aware dependency downloads by reading npmrc files and replacing axios with make-fetch-happen for proxy compatibility; (e) Analytics Tracking Migration to GA4 (UA deprecation): removed universal analytics and updated the global tracking ID in params.yaml for the documentation site. These changes collectively reduce release risk, improve reproducibility, and enhance cross-team collaboration and observability.
December 2024 monthly summary for gatling repositories. Focused on stabilizing release processes, expanding packaging capabilities, and improving developer experience across gatling/gatling-js and gatling/gatling.io-doc. Key outcomes include: (a) Release pipeline robustness and artifact handling: stabilized CI flow, ensured checkout before builds, corrected artifact packaging and release flow robustness, and enhanced observability with added job outputs and curl --fail-with-body; (b) Gatling Enterprise packaging enhancements: added support to include external protocol definitions in package manifests; (c) CLI usability improvements: harmonized cloud URL options and improved error messaging related to dependency bundles; (d) Dependency download proxy support: enabled proxy-aware dependency downloads by reading npmrc files and replacing axios with make-fetch-happen for proxy compatibility; (e) Analytics Tracking Migration to GA4 (UA deprecation): removed universal analytics and updated the global tracking ID in params.yaml for the documentation site. These changes collectively reduce release risk, improve reproducibility, and enhance cross-team collaboration and observability.
Monthly summary for 2024-11 (gatling/gatling-js): Delivered critical feature and packaging improvements, stabilized runtime for JavaScript simulations, and reinforced release processes to improve distribution quality. These efforts reduce friction for users integrating Gatling JS with Postman collections, enhance packaging hygiene and publish reliability, and improve Java interoperability when running simulations.
Monthly summary for 2024-11 (gatling/gatling-js): Delivered critical feature and packaging improvements, stabilized runtime for JavaScript simulations, and reinforced release processes to improve distribution quality. These efforts reduce friction for users integrating Gatling JS with Postman collections, enhance packaging hygiene and publish reliability, and improve Java interoperability when running simulations.
2024-10 monthly summary for gatling/gatling-js: Key features delivered: Proxy Protocol Support in Gatling HTTP Client enabling source IP configuration for IPv4 and IPv6 via new HttpProtocolBuilder APIs. Major bugs fixed: None reported for this repository this month. Overall impact and accomplishments: Enhances network flexibility for proxy-based load testing, enabling realistic enterprise deployment scenarios and improving fidelity of performance tests. Technologies/skills demonstrated: JavaScript/TypeScript, builder-pattern API extension, HTTP client configuration, PROXY protocol integration, commit-driven development.
2024-10 monthly summary for gatling/gatling-js: Key features delivered: Proxy Protocol Support in Gatling HTTP Client enabling source IP configuration for IPv4 and IPv6 via new HttpProtocolBuilder APIs. Major bugs fixed: None reported for this repository this month. Overall impact and accomplishments: Enhances network flexibility for proxy-based load testing, enabling realistic enterprise deployment scenarios and improving fidelity of performance tests. Technologies/skills demonstrated: JavaScript/TypeScript, builder-pattern API extension, HTTP client configuration, PROXY protocol integration, commit-driven development.
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