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João "Pisco" Fernandes

Developer

João "Pisco" Fernandes

joaocarlos@cloudflare.com

61 commits~10 files/commit

Performance

YoY:+51%
2026Previous year

Insights

Key patterns and highlights from this developer's activity.

Peak MonthJan'25263 performance
Growth Trend↓52%vs prior period
Avg Files/Commit10files per commit
Active Days45of 455 days
Top Repocloudflared59 commits

Effort Over Time

Breakdown of growth, maintenance, and fixes effort over time.

Bug Behavior

Beta

Bugs introduced vs. fixed over time.

No bugs introduced or fixed in this period.

Investment Quality

Beta

Reclassifies engineering effort based on bug attribution. Commits that introduced bugs are retrospectively counted as poor investments.

28%Productive TimeGrowth 95% + Fixes 5%
72%Maintenance Time
0%Wasted Time
How it works

Methodology

Investment Quality reclassifies engineering effort based on bug attribution data. Commits identified as buggy origins (those that introduced bugs later fixed by someone) have their grow and maintenance time moved into the Wasted Time category. Their waste (fix commits) remains counted as productive. All other commits retain their standard classification: grow is productive, maintenance is maintenance, and waste (fixes) is productive.

Relationship to Growth / Maintenance / Fixes

The standard model classifies commits as Growth, Maintenance, or Fixes. Investment Quality adds a quality lens: a commit that introduced a bug is retrospectively counted as a poor investment — the engineering time spent on it was wasted because it ultimately required additional fix work. Fix commits (Fixes in the standard model) are reframed as productive, because fixing bugs is valuable work.

Proposed API Endpoint

Currently computed client-side from commit and bug attribution data. Ideal server-side endpoint:

POST /v1/organizations/{orgId}/investment-quality
Content-Type: application/json

Request:
{
  "startTime": "2025-01-01T00:00:00Z",
  "endTime": "2025-12-31T23:59:59Z",
  "bucketSize": "BUCKET_SIZE_MONTH",
  "groupBy": ["repository_id" | "deliverer_email"]
}

Response:
{
  "productivePct": 74,
  "maintenancePct": 18,
  "wastedPct": 8,
  "buckets": [
    {
      "bucketStart": "2025-01-01T00:00:00Z",
      "productive": 4.2,
      "maintenance": 1.8,
      "wasted": 0.6
    }
  ]
}

Recent Activity

Latest analyzed commits from this developer.

HashMessageDateFilesEffort
c03dca2This commit **updates the documentation** for **Cloudflare One Tunnel** to reflect revised permission requirements for specific operations. It clarifies that the 'Load Balancer' permission is now an additional requirement for users to successfully perform `cloudflared login` and to route traffic to public hostnames. This **documentation update** ensures users are aware of the correct account-scoped roles needed, preventing potential configuration issues when setting up or managing `cloudflared` tunnels. The change is contained within the `src/content/partials/cloudflare-one/tunnel/account-scoped-roles.mdx` file.Mar 161maint
c0bc3bdThis commit **updates several key Go dependencies**, specifically `go-oidc`, `sentry-go`, and `go-jose`, to newer versions as indicated in `go.mod`. This is a **security fix** primarily aimed at addressing known **CVEs** present in the older versions of these libraries. By upgrading these critical components, the commit enhances the overall **security posture** and **stability** of the application, mitigating potential vulnerabilities and ensuring continued reliability.Mar 371–
29b3a7aThis commit performs general **maintenance** and **refactoring** across several components. It includes **documentation updates** in `CHANGES.md` and `README.md` to correct typos and update external links and instructions. Within the **`cfapi` client**, it **refactors** base URL trimming and standardizes error type definitions from `apiErr` to `apiError` in `cfapi/base_client.go`, specifically impacting functions like `NewRESTClient` and `checkErrors`. Additionally, it addresses minor **style fixes** by correcting typos in error messages within the **`packet` decoding logic** in `packet/decoder.go`, affecting `FindProtocol` and `decodeByVersion`. These changes enhance code consistency, readability, and documentation accuracy without altering core functionality.Mar 35maint
a0bcbf6This commit **improves the user experience** for the **`cloudflared` DNS proxy module** by enhancing its removal message. Specifically, the message displayed when the DNS proxy is no longer available, located in `cmd/cloudflared/proxydns/cmd.go`, now includes the deprecation version, a link to the changelog, and a recommendation for an alternative DNS-over-HTTPS client. This **maintenance update** provides users with crucial context and guidance, facilitating a smoother transition away from the deprecated functionality. Users attempting to utilize the removed DNS proxy will now receive more comprehensive information, helping them understand the change and find suitable alternatives.Feb 111maint
6658717This commit **updates the project documentation** by adding the **release notes for version 2026.2.0**. This essential **release preparation** step details significant changes within the new version, specifically highlighting **vulnerability fixes** and **feature removals**. The update to `RELEASE_NOTES` provides crucial information for users and developers, ensuring transparency regarding the contents and impact of the latest software release.Feb 61maint
9388e7fThis commit **removes the entire DNS over HTTPS (DoH) proxy feature** from `cloudflared` due to identified security vulnerabilities (GO-2025-3942, GO-2026-4289). This **critical security-driven removal** impacts the `cloudflared` CLI by eliminating the `proxy-dns` command, related `tunnel` subcommand flags, and the underlying CoreDNS-based `tunneldns/` package. The **configuration model** and all associated **component tests** have also been updated to reflect this change. This is a **breaking change** for users, who must now migrate to alternative DoH solutions as the feature is no longer available.Feb 2253maint
d7c62aeThis commit performs **maintenance** by updating the **release notes documentation** for version `2026.1.2`. It adds new entries detailing the changes included in this release, ensuring users have an accurate record of the latest software updates. Specifically, the `RELEASE_NOTES` file now documents the reverts for `TUN-9863` and `TUN-9886`, alongside the original entry for `TUN-9886`. This **documentation update** provides a comprehensive overview of the changes and fixes delivered in this release.Jan 231maint
2b95c61This commit **reverts** a prior change (TUN-9863) that updated the **Windows CI/CD pipeline configuration** to utilize a `cloudflared EV Certificate`. It specifically undoes the modification to the vault path for the key vault certificate within the `.ci/windows.gitlab-ci.yml` file. This **maintenance revert** ensures the Windows build process no longer attempts to use the specified EV certificate, effectively rolling back the certificate management strategy for this pipeline and impacting the **security and signing process** for Windows artifacts.Jan 231maint
efd0189This commit **reverts** the implementation of macOS notarization for `cloudflared`, specifically **removing** the notarization and stapling steps from the `.ci/scripts/mac/build.sh` script. This **revert** impacts the **macOS build process** within the CI/CD pipeline, meaning `cloudflared` binaries will no longer be notarized by Apple. The change effectively disables a **security compliance** feature previously added for macOS distributions, potentially affecting how the binary is perceived or handled by macOS Gatekeeper.Jan 211maint
8aebc38This commit **updates the project documentation** by adding the **release notes for version 2026.1.1**. It details significant changes and improvements related to `boto3`, `wixl bundling`, and `rpm bundling` that are part of this new version. This **maintenance** task ensures users and developers are fully informed about the new capabilities, bug fixes, and other updates included in the latest **software release**.Jan 191maint
b4f675cThis commit primarily **fixes issues related to RPM package bundling** within the CI/CD pipeline. It **updates the Dockerfile** (`.ci/image/Dockerfile`) to correctly install the `fpm` gem and initialize the RPM database, which is essential for successful **RPM package generation**. Additionally, several **CI/CD shell scripts** (`.ci/scripts/*.sh`) have been enhanced for **improved robustness** by adding `set -u`, ensuring that unset variables are treated as errors. A minor **maintenance** update also adds `/artifacts` to `.gitignore` to prevent committing build outputs. These changes collectively ensure more reliable and robust **automated package building and CI processes**.Jan 1910maint
d9cdd49This commit performs a **critical compatibility fix** by **updating the `boto3` dependency** within the **CI/CD release target script** (`.ci/scripts/release-target.sh`). It upgrades `boto3` from version `1.22.9` to `1.42.30`, which is necessary to ensure the **release process** can successfully execute on the `trixie` environment. This **infrastructure maintenance** prevents potential issues with AWS interactions during releases, thereby safeguarding the stability and functionality of the project's **deployment pipeline**.Jan 191maint
a29afd8This commit **fixes the installation of the `wixl` bundling tool** within the project's **CI/CD build environment**, which is crucial for generating Windows MSI packages. It **updates the `.ci/image/Dockerfile`** to streamline the setup process by installing `wixl` directly from `apt-get`, eliminating a previous manual download and dependency installation step. This **bug fix** ensures the robust and reliable creation of **Windows MSI packages**, preventing build failures related to the bundling tool's availability or configuration. The change directly impacts the **build pipeline for Windows artifacts**, improving overall release stability and consistency.Jan 191maint
8af01d5This commit **documents the release** of version 2026.1.0 by updating the `RELEASE_NOTES` file. It provides a comprehensive overview of the changes, including significant updates to the **Go version**, migration to **Debian distroless base images**, adjustments to the **Jira URL**, and modifications to **CI/CD pipelines**. This **maintenance** task ensures that all users and contributors are informed about the new capabilities and underlying infrastructure changes introduced in this major release.Jan 161maint
18eab58This commit performs a significant **maintenance upgrade** by updating the **Go runtime version** from 1.24.9 to 1.24.11 across all build and CI environments. Concurrently, it upgrades the **base Debian distroless images** from `debian12` to `debian13` for the final Docker artifacts and from `bookworm` to `trixie` for the CI build image. These changes affect the entire **build pipeline** and the **runtime environment** of the application, ensuring improved security, performance, and compatibility with the latest toolchains. A new vulnerability ID `GO-2026-4289` is also added to `.vulnignore`, likely related to the Go update.Jan 137maint
0ee6527This commit **fixes documentation** for **Cloudflare Tunnel** account limits, specifically clarifying the definition of route limits. It updates the description for 'Routes per tunnel' to 'Routes (CIDR routes + Hostname routes) per account' within the `src/content/docs/cloudflare-one/account-limits.mdx` file. This **documentation update** ensures users have accurate and comprehensive information regarding the scope of route limits, improving clarity for those managing their Cloudflare Tunnel configurations.Nov 281maint
789a9b1This commit **updates the Windows CI/CD pipeline configuration** to use a new vault path for the `KEY_VAULT_CERTIFICATE`. Specifically, it modifies `.ci/windows.gitlab-ci.yml` to enable the pipeline to retrieve and utilize the **Cloudflared EV Certificate**. This is a **maintenance update** ensuring that **Windows builds** correctly handle certificate management for signing or authentication processes.Nov 191maint
31f45fbThis commit **migrates the internal APT package build and publishing process for `cloudflared` to GitLab CI**, significantly enhancing the project's **CI/CD capabilities**. It introduces a new `.ci/apt-internal.gitlab-ci.yml` configuration to manage these builds, including adding `gcc-aarch64-linux-gnu` and `libc6-dev-arm64-cross` to the CI Docker image for **ARM cross-compilation support**. Extensive **refactoring** of the main `.gitlab-ci.yml` and common CI rules (`.ci/commons.gitlab-ci.yml`, `.ci/release.gitlab-ci.yml`) integrates this new `release-internal` stage. Concurrently, obsolete build configurations are removed from `cfsetup.yaml` as their functionality is now handled by the new GitLab CI pipeline. This change centralizes and modernizes the internal package distribution pipeline, improving build consistency and expanding platform support.Nov 76grow
17533b1This commit **updates the project's release documentation** by adding entries for version **2025.11.1**. It details the changes and improvements included in this new release, notably highlighting a **bug fix** related to the `docker hub push step`. This **maintenance** update ensures users have accurate and up-to-date information regarding the latest software version.Nov 71maint
9ce16c5This commit **fixes the Docker Hub push step** within the **CI/CD pipeline** by updating the `.ci/release.gitlab-ci.yml` configuration. It introduces anchors to ensure **consistent Docker Hub credentials** are applied for both branch and production builds, resolving previous inconsistencies in image publishing. Concurrently, the **component tests** in `test_tunnel.py` are enhanced for robustness. The `send_request` function now accepts an expected status code, and a new `retry_if_result_none` helper function implements a **retry mechanism** for `send_request` to mitigate transient test failures and improve test reliability.Nov 72maint
c03dca2Mar 16

This commit **updates the documentation** for **Cloudflare One Tunnel** to reflect revised permission requirements for specific operations. It clarifies that the 'Load Balancer' permission is now an additional requirement for users to successfully perform `cloudflared login` and to route traffic to public hostnames. This **documentation update** ensures users are aware of the correct account-scoped roles needed, preventing potential configuration issues when setting up or managing `cloudflared` tunnels. The change is contained within the `src/content/partials/cloudflare-one/tunnel/account-scoped-roles.mdx` file.

1 filesmaint
c0bc3bdMar 3

This commit **updates several key Go dependencies**, specifically `go-oidc`, `sentry-go`, and `go-jose`, to newer versions as indicated in `go.mod`. This is a **security fix** primarily aimed at addressing known **CVEs** present in the older versions of these libraries. By upgrading these critical components, the commit enhances the overall **security posture** and **stability** of the application, mitigating potential vulnerabilities and ensuring continued reliability.

71 files–
29b3a7aMar 3

This commit performs general **maintenance** and **refactoring** across several components. It includes **documentation updates** in `CHANGES.md` and `README.md` to correct typos and update external links and instructions. Within the **`cfapi` client**, it **refactors** base URL trimming and standardizes error type definitions from `apiErr` to `apiError` in `cfapi/base_client.go`, specifically impacting functions like `NewRESTClient` and `checkErrors`. Additionally, it addresses minor **style fixes** by correcting typos in error messages within the **`packet` decoding logic** in `packet/decoder.go`, affecting `FindProtocol` and `decodeByVersion`. These changes enhance code consistency, readability, and documentation accuracy without altering core functionality.

5 filesmaint
a0bcbf6Feb 11

This commit **improves the user experience** for the **`cloudflared` DNS proxy module** by enhancing its removal message. Specifically, the message displayed when the DNS proxy is no longer available, located in `cmd/cloudflared/proxydns/cmd.go`, now includes the deprecation version, a link to the changelog, and a recommendation for an alternative DNS-over-HTTPS client. This **maintenance update** provides users with crucial context and guidance, facilitating a smoother transition away from the deprecated functionality. Users attempting to utilize the removed DNS proxy will now receive more comprehensive information, helping them understand the change and find suitable alternatives.

1 filesmaint
6658717Feb 6

This commit **updates the project documentation** by adding the **release notes for version 2026.2.0**. This essential **release preparation** step details significant changes within the new version, specifically highlighting **vulnerability fixes** and **feature removals**. The update to `RELEASE_NOTES` provides crucial information for users and developers, ensuring transparency regarding the contents and impact of the latest software release.

1 filesmaint
9388e7fFeb 2

This commit **removes the entire DNS over HTTPS (DoH) proxy feature** from `cloudflared` due to identified security vulnerabilities (GO-2025-3942, GO-2026-4289). This **critical security-driven removal** impacts the `cloudflared` CLI by eliminating the `proxy-dns` command, related `tunnel` subcommand flags, and the underlying CoreDNS-based `tunneldns/` package. The **configuration model** and all associated **component tests** have also been updated to reflect this change. This is a **breaking change** for users, who must now migrate to alternative DoH solutions as the feature is no longer available.

253 filesmaint
d7c62aeJan 23

This commit performs **maintenance** by updating the **release notes documentation** for version `2026.1.2`. It adds new entries detailing the changes included in this release, ensuring users have an accurate record of the latest software updates. Specifically, the `RELEASE_NOTES` file now documents the reverts for `TUN-9863` and `TUN-9886`, alongside the original entry for `TUN-9886`. This **documentation update** provides a comprehensive overview of the changes and fixes delivered in this release.

1 filesmaint
2b95c61Jan 23

This commit **reverts** a prior change (TUN-9863) that updated the **Windows CI/CD pipeline configuration** to utilize a `cloudflared EV Certificate`. It specifically undoes the modification to the vault path for the key vault certificate within the `.ci/windows.gitlab-ci.yml` file. This **maintenance revert** ensures the Windows build process no longer attempts to use the specified EV certificate, effectively rolling back the certificate management strategy for this pipeline and impacting the **security and signing process** for Windows artifacts.

1 filesmaint
efd0189Jan 21

This commit **reverts** the implementation of macOS notarization for `cloudflared`, specifically **removing** the notarization and stapling steps from the `.ci/scripts/mac/build.sh` script. This **revert** impacts the **macOS build process** within the CI/CD pipeline, meaning `cloudflared` binaries will no longer be notarized by Apple. The change effectively disables a **security compliance** feature previously added for macOS distributions, potentially affecting how the binary is perceived or handled by macOS Gatekeeper.

1 filesmaint
8aebc38Jan 19

This commit **updates the project documentation** by adding the **release notes for version 2026.1.1**. It details significant changes and improvements related to `boto3`, `wixl bundling`, and `rpm bundling` that are part of this new version. This **maintenance** task ensures users and developers are fully informed about the new capabilities, bug fixes, and other updates included in the latest **software release**.

1 filesmaint
b4f675cJan 19

This commit primarily **fixes issues related to RPM package bundling** within the CI/CD pipeline. It **updates the Dockerfile** (`.ci/image/Dockerfile`) to correctly install the `fpm` gem and initialize the RPM database, which is essential for successful **RPM package generation**. Additionally, several **CI/CD shell scripts** (`.ci/scripts/*.sh`) have been enhanced for **improved robustness** by adding `set -u`, ensuring that unset variables are treated as errors. A minor **maintenance** update also adds `/artifacts` to `.gitignore` to prevent committing build outputs. These changes collectively ensure more reliable and robust **automated package building and CI processes**.

10 filesmaint
d9cdd49Jan 19

This commit performs a **critical compatibility fix** by **updating the `boto3` dependency** within the **CI/CD release target script** (`.ci/scripts/release-target.sh`). It upgrades `boto3` from version `1.22.9` to `1.42.30`, which is necessary to ensure the **release process** can successfully execute on the `trixie` environment. This **infrastructure maintenance** prevents potential issues with AWS interactions during releases, thereby safeguarding the stability and functionality of the project's **deployment pipeline**.

1 filesmaint
a29afd8Jan 19

This commit **fixes the installation of the `wixl` bundling tool** within the project's **CI/CD build environment**, which is crucial for generating Windows MSI packages. It **updates the `.ci/image/Dockerfile`** to streamline the setup process by installing `wixl` directly from `apt-get`, eliminating a previous manual download and dependency installation step. This **bug fix** ensures the robust and reliable creation of **Windows MSI packages**, preventing build failures related to the bundling tool's availability or configuration. The change directly impacts the **build pipeline for Windows artifacts**, improving overall release stability and consistency.

1 filesmaint
8af01d5Jan 16

This commit **documents the release** of version 2026.1.0 by updating the `RELEASE_NOTES` file. It provides a comprehensive overview of the changes, including significant updates to the **Go version**, migration to **Debian distroless base images**, adjustments to the **Jira URL**, and modifications to **CI/CD pipelines**. This **maintenance** task ensures that all users and contributors are informed about the new capabilities and underlying infrastructure changes introduced in this major release.

1 filesmaint
18eab58Jan 13

This commit performs a significant **maintenance upgrade** by updating the **Go runtime version** from 1.24.9 to 1.24.11 across all build and CI environments. Concurrently, it upgrades the **base Debian distroless images** from `debian12` to `debian13` for the final Docker artifacts and from `bookworm` to `trixie` for the CI build image. These changes affect the entire **build pipeline** and the **runtime environment** of the application, ensuring improved security, performance, and compatibility with the latest toolchains. A new vulnerability ID `GO-2026-4289` is also added to `.vulnignore`, likely related to the Go update.

7 filesmaint
0ee6527Nov 28

This commit **fixes documentation** for **Cloudflare Tunnel** account limits, specifically clarifying the definition of route limits. It updates the description for 'Routes per tunnel' to 'Routes (CIDR routes + Hostname routes) per account' within the `src/content/docs/cloudflare-one/account-limits.mdx` file. This **documentation update** ensures users have accurate and comprehensive information regarding the scope of route limits, improving clarity for those managing their Cloudflare Tunnel configurations.

1 filesmaint
789a9b1Nov 19

This commit **updates the Windows CI/CD pipeline configuration** to use a new vault path for the `KEY_VAULT_CERTIFICATE`. Specifically, it modifies `.ci/windows.gitlab-ci.yml` to enable the pipeline to retrieve and utilize the **Cloudflared EV Certificate**. This is a **maintenance update** ensuring that **Windows builds** correctly handle certificate management for signing or authentication processes.

1 filesmaint
31f45fbNov 7

This commit **migrates the internal APT package build and publishing process for `cloudflared` to GitLab CI**, significantly enhancing the project's **CI/CD capabilities**. It introduces a new `.ci/apt-internal.gitlab-ci.yml` configuration to manage these builds, including adding `gcc-aarch64-linux-gnu` and `libc6-dev-arm64-cross` to the CI Docker image for **ARM cross-compilation support**. Extensive **refactoring** of the main `.gitlab-ci.yml` and common CI rules (`.ci/commons.gitlab-ci.yml`, `.ci/release.gitlab-ci.yml`) integrates this new `release-internal` stage. Concurrently, obsolete build configurations are removed from `cfsetup.yaml` as their functionality is now handled by the new GitLab CI pipeline. This change centralizes and modernizes the internal package distribution pipeline, improving build consistency and expanding platform support.

6 filesgrow
17533b1Nov 7

This commit **updates the project's release documentation** by adding entries for version **2025.11.1**. It details the changes and improvements included in this new release, notably highlighting a **bug fix** related to the `docker hub push step`. This **maintenance** update ensures users have accurate and up-to-date information regarding the latest software version.

1 filesmaint
9ce16c5Nov 7

This commit **fixes the Docker Hub push step** within the **CI/CD pipeline** by updating the `.ci/release.gitlab-ci.yml` configuration. It introduces anchors to ensure **consistent Docker Hub credentials** are applied for both branch and production builds, resolving previous inconsistencies in image publishing. Concurrently, the **component tests** in `test_tunnel.py` are enhanced for robustness. The `send_request` function now accepts an expected status code, and a new `retry_if_result_none` helper function implements a **retry mechanism** for `send_request` to mitigate transient test failures and improve test reliability.

2 filesmaint

Work Patterns

Beta

Commit activity distribution by hour and day of week. Shows when this developer is most active.

Collaboration

Beta

Developers who frequently work on the same files and symbols. Higher score means stronger code collaboration.

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