grafana/tempo
Nov 2024 – Oct 2025
10 Months active
Languages Used
GoMarkdownJsonnetMakefileYAMLDockerfileShellJavaScript
Technical Skills
API DesignBackend DevelopmentConfiguration ManagementDocumentationBuild SystemsCI/CD
Carles Garcia
PROFILE
Carles Garcia
Carles Garcia Cabot contributed to the grafana/tempo repository by building and refining backend features that improved observability, reliability, and developer experience. He modernized CI/CD pipelines by migrating from Drone to GitHub Actions, enhanced distributed tracing accuracy with 64-bit trace ID hashing, and introduced memory-efficient active series estimation using HyperLogLog. Carles also strengthened API consistency, improved metrics collection, and maintained robust documentation. His work leveraged Go, Docker, and Prometheus, focusing on scalable configuration, secure containerization, and rigorous testing. The depth of his engineering addressed both operational reliability and developer productivity, resulting in safer releases and more maintainable distributed systems.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
55Total
Bugs
10
Commits
55
Features
15
Lines of code
8,726
Activity Months10
Your Network
301 people
Work History
October 2025
5 Commits • 2 Features
Oct 1, 2025October 2025 monthly summary for grafana/tempo: Delivered reliability and security improvements along with a memory-efficient feature to support scalable capacity planning. Key outcomes include robustness in test infrastructure, a memory-conscious active series demand estimator, and deployment hardening that reduces image size and vulnerabilities, setting Tempo up for faster, safer releases.
5 Commits • 2 Features
Oct 1, 2025October 2025 monthly summary for grafana/tempo: Delivered reliability and security improvements along with a memory-efficient feature to support scalable capacity planning. Key outcomes include robustness in test infrastructure, a memory-conscious active series demand estimator, and deployment hardening that reduces image size and vulnerabilities, setting Tempo up for faster, safer releases.
October 2025
September 2025
4 Commits
Sep 1, 2025September 2025 performance highlights for grafana/tempo: focused on memory safety and reliability improvements in vparquet5 encoding pools and stabilization of tests. No new user-facing features; the work ensures safer pooling, reduced risk of data leaks, and more robust test suite, delivering long-term stability and reliability for ingestion pipelines.
September 2025
4 Commits
Sep 1, 2025September 2025 performance highlights for grafana/tempo: focused on memory safety and reliability improvements in vparquet5 encoding pools and stabilization of tests. No new user-facing features; the work ensures safer pooling, reduced risk of data leaks, and more robust test suite, delivering long-term stability and reliability for ingestion pipelines.
August 2025
6 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — Grafana Tempo: Delivered core frontend API consistency improvements and strengthened testing infrastructure, translating technical work into measurable business value through fewer API errors, improved validation, and safer concurrent resource handling.
6 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — Grafana Tempo: Delivered core frontend API consistency improvements and strengthened testing infrastructure, translating technical work into measurable business value through fewer API errors, improved validation, and safer concurrent resource handling.
August 2025
June 2025
6 Commits • 4 Features
Jun 1, 2025June 2025: Focused on strengthening tempo's observability, reliability, and developer experience. Delivered metrics enhancements for better data quality, upgraded tracing ID hashing to reduce collisions, enabled HTTP writes in the multi-tenant example to support realistic ingestion scenarios, and refined tooling by disabling a lint rule to reduce noise. While no critical bugs were reported, these changes deliver measurable business value: higher data accuracy, safer distributed tracing, easier demonstrations of multi-tenant ingestion, and faster developer cycles.
June 2025
6 Commits • 4 Features
Jun 1, 2025June 2025: Focused on strengthening tempo's observability, reliability, and developer experience. Delivered metrics enhancements for better data quality, upgraded tracing ID hashing to reduce collisions, enabled HTTP writes in the multi-tenant example to support realistic ingestion scenarios, and refined tooling by disabling a lint rule to reduce noise. While no critical bugs were reported, these changes deliver measurable business value: higher data accuracy, safer distributed tracing, easier demonstrations of multi-tenant ingestion, and faster developer cycles.
May 2025
2 Commits • 2 Features
May 1, 2025May 2025 — grafana/tempo: Key features delivered include updating example Docker configurations to Grafana and Memcached, and enhancing tempo-vulture to generate parent-child spans for more realistic traces. No major bugs were reported or fixed this month. Impact: Keeps demos up-to-date, improves testing realism and validation efficiency, and strengthens pipeline reliability. Technologies/skills demonstrated: Docker image management, configuration maintenance, test-data generation, tracing/testing tooling, and collaborative Git workflows.
2 Commits • 2 Features
May 1, 2025May 2025 — grafana/tempo: Key features delivered include updating example Docker configurations to Grafana and Memcached, and enhancing tempo-vulture to generate parent-child spans for more realistic traces. No major bugs were reported or fixed this month. Impact: Keeps demos up-to-date, improves testing realism and validation efficiency, and strengthens pipeline reliability. Technologies/skills demonstrated: Docker image management, configuration maintenance, test-data generation, tracing/testing tooling, and collaborative Git workflows.
May 2025
March 2025
1 Commits
Mar 1, 2025March 2025 — Grafana Tempo: Documentation quality maintained. Corrected a changelog typo to reflect the removed deprecated option, improving developer experience and release-note accuracy.
March 2025
1 Commits
Mar 1, 2025March 2025 — Grafana Tempo: Documentation quality maintained. Corrected a changelog typo to reflect the removed deprecated option, improving developer experience and release-note accuracy.
February 2025
5 Commits • 2 Features
Feb 1, 2025February 2025 (2025-02) – Tempo development focused on documentation hygiene and observability enhancements, delivering two key features that improve operator reliability and trace visibility. No major bugs fixed are documented for this month. Impact: clearer runbooks reduce onboarding and support toil; richer trace-by-ID observability and refined SLO metrics improve troubleshooting, monitoring fidelity, and SLA adherence. Technologies/skills demonstrated include runbook/documentation hygiene, trace observability instrumentation (FindByTraceId) and V2 trace results, structured logging, and metric instrumentation with a move from histogram to counter for throughput SLOs.
5 Commits • 2 Features
Feb 1, 2025February 2025 (2025-02) – Tempo development focused on documentation hygiene and observability enhancements, delivering two key features that improve operator reliability and trace visibility. No major bugs fixed are documented for this month. Impact: clearer runbooks reduce onboarding and support toil; richer trace-by-ID observability and refined SLO metrics improve troubleshooting, monitoring fidelity, and SLA adherence. Technologies/skills demonstrated include runbook/documentation hygiene, trace observability instrumentation (FindByTraceId) and V2 trace results, structured logging, and metric instrumentation with a move from histogram to counter for throughput SLOs.
February 2025
January 2025
12 Commits • 2 Features
Jan 1, 2025January 2025 Tempo repository monthly summary focusing on CI/CD modernization, container image security, and bug fixes. Key work includes migrating CI/CD from Drone to GitHub Actions with multi-arch Docker builds and manifest-based workflows, revamping release pipelines, removing legacy Drone configs, and integrating Grafana secrets with Podman-based testing. Docker base images upgraded to distroless with updated CA certificates (BusyBox used for debugging), plus a Makefile/docker build reliability fix to align container builds with the container's make binary. Fixed TraceQL floating-point formatting bug for correct result interpretation and resolved container-local build path issues. Result: improved release velocity, lower build/release risk, stronger security posture, and more reliable TraceQL outcomes.
January 2025
12 Commits • 2 Features
Jan 1, 2025January 2025 Tempo repository monthly summary focusing on CI/CD modernization, container image security, and bug fixes. Key work includes migrating CI/CD from Drone to GitHub Actions with multi-arch Docker builds and manifest-based workflows, revamping release pipelines, removing legacy Drone configs, and integrating Grafana secrets with Podman-based testing. Docker base images upgraded to distroless with updated CA certificates (BusyBox used for debugging), plus a Makefile/docker build reliability fix to align container builds with the container's make binary. Fixed TraceQL floating-point formatting bug for correct result interpretation and resolved container-local build path issues. Result: improved release velocity, lower build/release risk, stronger security posture, and more reliable TraceQL outcomes.
December 2024
11 Commits • 1 Features
Dec 1, 2024December 2024 performance highlights for grafana/tempo: delivered substantial CI/CD modernization, robust bug fixes, and improved project documentation rendering, driving faster, more reliable releases and clearer traces of issues across the tempo ecosystem.
11 Commits • 1 Features
Dec 1, 2024December 2024 performance highlights for grafana/tempo: delivered substantial CI/CD modernization, robust bug fixes, and improved project documentation rendering, driving faster, more reliable releases and clearer traces of issues across the tempo ecosystem.
December 2024
November 2024
3 Commits • 1 Features
Nov 1, 2024November 2024: Implemented scalable configuration for Tempo with a backward-compatible max_spans_per_span_set, updated changelog and docs, and refined the search sharder logic; plus targeted documentation fixes to service-graphs and TraceQL. This work improves resource control, accuracy, and developer UX, enabling safer scale and clearer guidance for users.
November 2024
3 Commits • 1 Features
Nov 1, 2024November 2024: Implemented scalable configuration for Tempo with a backward-compatible max_spans_per_span_set, updated changelog and docs, and refined the search sharder logic; plus targeted documentation fixes to service-graphs and TraceQL. This work improves resource control, accuracy, and developer UX, enabling safer scale and clearer guidance for users.
Activity
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Quality Metrics
Correctness93.4%
Maintainability92.4%
Architecture88.8%
Performance87.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
DockerfileGoJavaScriptJsonnetMakefileMarkdownSQLShellTypeScriptYAML
Technical Skills
API DesignAPI DevelopmentAlgorithmsBackend DevelopmentBenchmarkingBug FixingBuild SystemsCI/CDCachingCode GenerationConcurrencyConfiguration ManagementContainerizationData StructuresDebugging
Repositories Contributed To
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