Update kit with new pg config

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

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

@@ -87,6 +87,12 @@ spec:
               value: {{ include "probo.postgresql.database" . | quote }}
             - name: PG_POOL_SIZE
               value: {{ .Values.postgresql.poolSize | default "100" | quote }}
+            - name: PG_MIN_POOL_SIZE
+              value: {{ .Values.postgresql.minPoolSize | default "10" | quote }}
+            - name: PG_MAX_CONN_IDLE_TIME_SECONDS
+              value: {{ .Values.postgresql.maxConnIdleTimeSeconds | default "1800" | quote }}
+            - name: PG_MAX_CONN_LIFETIME_SECONDS
+              value: {{ .Values.postgresql.maxConnLifetimeSeconds | default "3600" | quote }}
             {{- if .Values.postgresql.caBundle }}
             - name: PG_CA_BUNDLE
               valueFrom:

contrib/helm/charts/probo/values-production.yaml.example

@@ -210,6 +210,11 @@ postgresql:
   username: "probod"
   password: "CHANGE_ME_DB_PASSWORD"
   poolSize: 200
+  # Keep 20 connections warm to absorb bursts without paying the
+  # TLS + PostgreSQL startup handshake on each acquire.
+  minPoolSize: 20
+  maxConnIdleTimeSeconds: 1800
+  maxConnLifetimeSeconds: 3600
   # Uncomment if using TLS with custom CA
   # caCertBundle: |
   #   -----BEGIN CERTIFICATE-----

contrib/helm/charts/probo/values.yaml

@@ -301,6 +301,16 @@ postgresql:
   password: ""  # REQUIRED when enabled=false: PostgreSQL password
   database: probod
   poolSize: 100
+  # Minimum number of warm connections kept in the pool. Raising this
+  # value avoids TLS + PostgreSQL startup handshake latency on bursty
+  # workloads (visible as spikes on pgxpool_acquire_duration_seconds).
+  minPoolSize: 10
+  # Maximum time a connection can be idle before being destroyed, in
+  # seconds. Default 1800 (30 minutes) matches pgx defaults.
+  maxConnIdleTimeSeconds: 1800
+  # Maximum lifetime of a connection before being recycled, in
+  # seconds. Default 3600 (1 hour) matches pgx defaults.
+  maxConnLifetimeSeconds: 3600
   # PostgreSQL TLS/SSL configuration
   # caBundle: |
   #   -----BEGIN CERTIFICATE-----