Mitsuhiro Tanda
Site Reliability Engineer at Datachain, Inc.
Tokyo, Japan
Summary
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RockstarMitsuhiro Tanda is a Site Reliability Engineer based in Tokyo with 11 years of experience building and operating cloud-native systems, most recently joining Datachain after a long engineering and operations tenure at GREE. He focuses on observability and cloud tooling and is an active open-source contributor to high-profile projects like Prometheus and Grafana, where he has implemented backend storage optimizations, EC2 service discovery improvements, new API endpoints, and front-end templating features. Comfortable across the full stack, Mitsuhiro blends systems-level performance work with developer-facing features, bridging gaps between monitoring internals and user-facing interfaces. Notably, his contributions include exposing memory-chunk metrics and adding minShrinkRatio to Prometheus storage—practical changes that improve production reliability at scale.
11 years of coding experience
18 years of employment as a software developer
Github Skills (22)
data-visualizations10
monitoring10
dashboard10
apidoc10
alertdialog10
alertifyjs10
data-visualisation10
alertview10
alerts10
go10
prometheus10
api10
data-visualization10
javascript9
typescript9
Programming languages (12)
Github contributions (5)
grafana/grafana
Apr 2015 - Feb 2022
The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:25 reviews, 423 commits, 293 PRs in 6 years 11 months
Contributions summary:Mitsuhiro contributed to the Grafana project by implementing new features and making various improvements across the front-end and back-end. The contributions included supporting new API endpoints, such as `/api/v1/labels` and adding JSON format templating. Furthermore, the user addressed bug fixes related to annotations and made updates to cloudwatch metrics and dimensions.
visualizeobservabilitybusiness-intelligencegrafanaprometheus
prometheus/prometheus
May 2015 - Dec 2019
The Prometheus monitoring system and time series database.
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits, 10 PRs, 30 comments in 4 years 7 months
Contributions summary:Mitsuhiro focused on enhancing the Prometheus monitoring system by implementing several key improvements. They addressed issues related to graph links and added support for displaying EC2 instance types. Furthermore, the user contributed to optimizing storage by incorporating the `minShrinkRatio` feature and exposing metrics related to memory chunks. They also made configuration changes for the EC2 service discovery feature.
time-series-databaseprometheus-exporterseries-databasealertingdatabase
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