Add pg pool tuning options from kit v0.10.0

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

contrib/helm/charts/probo/templates/deployment.yaml

@@ -93,6 +93,10 @@ spec:
               value: {{ .Values.postgresql.maxConnIdleTimeSeconds | default "1800" | quote }}
             - name: PG_MAX_CONN_LIFETIME_SECONDS
               value: {{ .Values.postgresql.maxConnLifetimeSeconds | default "3600" | quote }}
+            - name: PG_MAX_CONN_LIFETIME_JITTER_SECONDS
+              value: {{ .Values.postgresql.maxConnLifetimeJitterSeconds | default "300" | quote }}
+            - name: PG_HEALTH_CHECK_PERIOD_SECONDS
+              value: {{ .Values.postgresql.healthCheckPeriodSeconds | default "60" | quote }}
             {{- if .Values.postgresql.caBundle }}
             - name: PG_CA_BUNDLE
               valueFrom:

contrib/helm/charts/probo/values.yaml

@@ -311,6 +311,12 @@ postgresql:
   # Maximum lifetime of a connection before being recycled, in
   # seconds. Default 3600 (1 hour) matches pgx defaults.
   maxConnLifetimeSeconds: 3600
+  # Jitter added to maxConnLifetime to spread reconnect storms, in
+  # seconds. Default 300 (5 minutes).
+  maxConnLifetimeJitterSeconds: 300
+  # How often the pool checks idle connections, in seconds. Default 60
+  # (1 minute).
+  healthCheckPeriodSeconds: 60
   # PostgreSQL TLS/SSL configuration
   # caBundle: |
   #   -----BEGIN CERTIFICATE-----