💎 feat: Add Redis as Optional Sub-chart Dependency in Helm Chart (#11664)

Add Bitnami Redis as an optional Helm sub-chart dependency, following the
same pattern used by MongoDB and Meilisearch. When enabled, USE_REDIS and
REDIS_URI are auto-wired into the LibreChat ConfigMap.

- Add redis dependency (Bitnami 24.1.3, Redis 8.4) to Chart.yaml
- Add redis config section to values.yaml (disabled by default)
- Auto-wire USE_REDIS and REDIS_URI in configmap-env.yaml with dig
  checks to allow user overrides via configEnv
- Bump chart version to 1.10.0

Co-authored-by: Feng Lu <feng.lu@kindredgroup.com>
Co-authored-by: Danny Avila <danny@librechat.ai>

helm/librechat/Chart.yaml

@@ -36,6 +36,10 @@ dependencies:
     version: "0.11.0"
     condition: meilisearch.enabled
     repository: "https://meilisearch.github.io/meilisearch-kubernetes"
+  - name: redis
+    version: "24.1.3"
+    condition: redis.enabled
+    repository: "https://charts.bitnami.com/bitnami"
   - name: librechat-rag-api
     version: "0.5.3"
     condition: librechat-rag-api.enabled

helm/librechat/templates/configmap-env.yaml

@@ -12,6 +12,12 @@ data:
   {{- if and (not (dig "configEnv" "MONGO_URI" "" .Values.librechat)) .Values.mongodb.enabled }}
   MONGO_URI: mongodb://{{ include "mongodb.service.nameOverride" .Subcharts.mongodb }}.{{ .Release.Namespace | lower }}.svc.cluster.local:27017/LibreChat
   {{- end }}
+  {{- if and (not (dig "configEnv" "USE_REDIS" "" .Values.librechat)) .Values.redis.enabled }}
+  USE_REDIS: "true"
+  {{- end }}
+  {{- if and (not (dig "configEnv" "REDIS_URI" "" .Values.librechat)) .Values.redis.enabled }}
+  REDIS_URI: redis://{{ include "common.names.fullname" .Subcharts.redis }}-master.{{ .Release.Namespace | lower }}.svc.cluster.local:6379
+  {{- end }}
   {{- if .Values.librechat.configEnv }}
   {{- toYaml .Values.librechat.configEnv | nindent 2 }}
   {{- end }}

helm/librechat/values.yaml

@@ -304,8 +304,15 @@ meilisearch:
   persistence:
     enabled: true
     storageClass: ""
-  image: 
+  image:
     tag: "v1.7.3"
   auth:
     # Use an existing Kubernetes secret for the MEILI_MASTER_KEY
     existingMasterKeySecret: "librechat-credentials-env"
+
+# Redis Parameters
+redis:
+  enabled: false
+  architecture: standalone
+  auth:
+    enabled: false