actually enable async logging by default (#3668)

Signed-off-by: Nicu Reut <nicu.reut@digitalasset.com>

Author: nicu-da

cluster/helm/splice-util-lib/templates/_helpers.tpl

@@ -204,7 +204,7 @@ spec:
 - name: LOG_LEVEL_STDOUT
   value: {{ .logLevelStdout | default "DEBUG" }}
 - name: LOG_IMMEDIATE_FLUSH
-  value: {{ .logAsyncFlush | default false | not | quote }}
+  value: {{ .logAsyncFlush | default true | not | quote }}
 {{- end }}
 {{- define "splice-util-lib.service-account" -}}
 {{- if .serviceAccountName -}}

docs/src/release_notes.rst

@@ -12,6 +12,12 @@
     - deprecated ``/v0/total-amulet-balance`` and ``/v0/wallet-balance`` endpoints have been removed in favor of using `/registry/metadata/v1/instruments/{instrumentId} <app_dev/token_standard/openapi/token_metadata.html#get--registry-metadata-v1-instruments-instrumentId>`_
       and `/v0/holdings/summary <app_dev/scan_api/scan_openapi.html#post--v0-holdings-summary>`_, respectively.
 
+  - Deployments
+
+    - The default logger has been switched to use an asynchronous appender, for all the nodes, for better performance.
+      The behavior can be switched back to synchronous logging by setting the environment variable `LOG_IMMEDIATE_FLUSH=true`.
+      This now includes helm deployments as well, in 0.5.7 the default was changed only for docker-compose deployments.
+
 .. release-notes:: 0.5.7
 
   .. important::