26 switch to redis

[KevinGruber2001]

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[github-actions]

📦 Chart Preview Ready

helm install test oci://ghcr.io/ls1intum/charts/theia-shared-cache --version 0.3.0-pr.27

Updated: c8b9e97

[Copilot]

Pull request overview

This PR switches the cache server’s storage backend from MinIO/S3 to Redis and updates local (docker-compose) and Kubernetes (Helm) deployment assets to run Redis alongside the cache server, with expanded observability via Prometheus/Grafana and optional Reposilite.

Changes:

• Replace MinIO storage implementation/config with a Redis-backed Storage implementation and new config fields (addr/password/db).
• Update deployment manifests (docker-compose + Helm chart) to run Redis + redis-exporter and provision Prometheus/Grafana assets.
• Adjust metrics histogram buckets for request latency and update docs to reflect the new architecture.

Reviewed changes

Copilot reviewed 27 out of 28 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
src/internal/storage/redis.go	Adds Redis-backed storage implementation.
src/internal/storage/minio.go	Removes MinIO storage implementation.
src/internal/middleware/metrics.go	Adjusts request-duration histogram buckets and import ordering.
src/internal/config/config.go	Updates storage config fields/defaults/env bindings/validation for Redis.
src/cmd/server/main.go	Wires server startup to Redis storage instead of MinIO (removes bucket init).
src/configs/config.yaml	Updates default config to Redis connection settings.
src/go.mod	Swaps dependencies (drop MinIO, add go-redis; promotes some OTel deps).
src/go.sum	Updates dependency lockfile for Redis + related transitive deps.
src/deployments/docker-compose.yaml	Replaces MinIO with Redis + redis-exporter; adds Grafana + Reposilite.
src/deployments/prometheus.yaml	Adds scrape jobs for Redis exporter and Reposilite; normalizes quoting.
src/deployments/reposilite/reposilite.shared.json	Adds shared Reposilite proxy configuration.
src/deployments/grafana/provisioning/datasources/prometheus.yaml	Adds provisioned Prometheus datasource.
src/deployments/grafana/provisioning/dashboards/dashboards.yaml	Adds dashboard provisioning configuration.
src/deployments/grafana/dashboards/gradle-build-cache.json	Adds a Grafana dashboard for cache/Redis metrics.
chart/Chart.yaml	Bumps chart version to 0.3.0 (breaking change).
chart/values.yaml	Replaces MinIO storage values with Redis DB/resources values.
chart/templates/_helpers.tpl	Adds standard app.kubernetes.io/* label helpers.
chart/templates/configmap.yaml	Updates rendered app config to point at Redis.
chart/templates/deployment.yaml	Updates cache-server Deployment to wait for Redis and inject Redis secret.
chart/templates/service.yaml	Switches Service labels/selectors to shared helper labels.
chart/templates/secrets.yaml	Replaces MinIO creds secret with generated Redis password secret.
chart/templates/redis-deployment.yaml	Adds Redis + redis-exporter Deployment.
chart/templates/redis-service.yaml	Adds Redis Service exposing Redis and exporter ports.
chart/templates/minio-statefulset.yaml	Removes MinIO StatefulSet.
chart/templates/minio-service.yaml	Removes MinIO Service.
chart/templates/reposilite-shared-config.yaml	Updates labels and formatting for Reposilite shared config.
chart/README.md	Updates Helm chart documentation for Redis/Revosilite/monitoring.
README.md	Updates repo-level documentation for Redis + monitoring stack.

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