diff --git a/.github/workflows/deploy-to-node.yaml b/.github/workflows/deploy-to-node.yaml
index 3457293e2f..436e7f582a 100644
--- a/.github/workflows/deploy-to-node.yaml
+++ b/.github/workflows/deploy-to-node.yaml
@@ -59,6 +59,7 @@ jobs:
         ${{ vars.WEB_NEXT_PUBLIC_ENABLE_EMAIL_SIGNIN_CAPTCHA }}
       WEB_NEXT_PUBLIC_ENABLE_EMAIL_SIGNIN:
         ${{ vars.WEB_NEXT_PUBLIC_ENABLE_EMAIL_SIGNIN }}
+      LOGURU_LEVEL: ${{ vars.LOGURU_LEVEL }}
     steps:
       - name: Checkout
         uses: actions/checkout@v2
diff --git a/ansible/deploy-to-node.yaml b/ansible/deploy-to-node.yaml
index 23bc0573c2..639003a42f 100644
--- a/ansible/deploy-to-node.yaml
+++ b/ansible/deploy-to-node.yaml
@@ -149,6 +149,9 @@
           USER_STATS_INTERVAL_TOTAL:
             "{{ lookup('ansible.builtin.env', 'STATS_INTERVAL_TOTAL') |
             default('240', true) }}"
+          LOGURU_LEVEL:
+            "{{ lookup('ansible.builtin.env', 'LOGURU_LEVEL') | default('INFO',
+            true) }}"
         ports:
           - "{{ backend_port }}:8080"
 
diff --git a/backend/oasst_backend/api/v1/tasks.py b/backend/oasst_backend/api/v1/tasks.py
index c817ba67a3..c74dfcf329 100644
--- a/backend/oasst_backend/api/v1/tasks.py
+++ b/backend/oasst_backend/api/v1/tasks.py
@@ -104,7 +104,8 @@ def tasks_acknowledge(
         pr = PromptRepository(db, api_client, frontend_user=frontend_user)
 
         # here we store the message id in the database for the task
-        logger.info(f"Frontend acknowledges task {task_id=}, {ack_request=}.")
+        logger.info(f"Frontend ACK task_id={task_id}")
+        logger.debug(f"{ack_request=}.")
         pr.task_repository.bind_frontend_message_id(task_id=task_id, frontend_message_id=ack_request.message_id)
 
     except OasstError:
diff --git a/backend/oasst_backend/config.py b/backend/oasst_backend/config.py
index 683133f78b..ff4c549715 100644
--- a/backend/oasst_backend/config.py
+++ b/backend/oasst_backend/config.py
@@ -166,8 +166,8 @@ class Settings(BaseSettings):
     DATABASE_URI: Optional[PostgresDsn] = None
     DATABASE_MAX_TX_RETRY_COUNT: int = 3
 
-    DATABASE_POOL_SIZE = 128
-    DATABASE_MAX_OVERFLOW = 128
+    DATABASE_POOL_SIZE = 75
+    DATABASE_MAX_OVERFLOW = 20
 
     RATE_LIMIT: bool = True
     MESSAGE_SIZE_LIMIT: int = 2000
diff --git a/backend/oasst_backend/tree_manager.py b/backend/oasst_backend/tree_manager.py
index 7d5a37d9ea..6b4f523615 100644
--- a/backend/oasst_backend/tree_manager.py
+++ b/backend/oasst_backend/tree_manager.py
@@ -623,7 +623,8 @@ def next_task(
                 HTTPStatus.SERVICE_UNAVAILABLE,
             )
 
-        logger.info(f"Generated {task=}.")
+        logger.info(f"Generated task (type={task.type}, id={task.id})")
+        logger.debug(f"Generated {task=}.")
 
         return task, message_tree_id, parent_message_id
 
@@ -634,8 +635,9 @@ async def handle_interaction(self, interaction: protocol_schema.AnyInteraction)
         match type(interaction):
             case protocol_schema.TextReplyToMessage:
                 logger.info(
-                    f"Frontend reports text reply to {interaction.message_id=} with {interaction.text=} by {interaction.user=}."
+                    f"Frontend reports text reply to message_id={interaction.message_id} by user={interaction.user}."
                 )
+                logger.debug(f"with {interaction.text=}")
                 # here we store the text reply in the database
                 message = pr.store_text_reply(
                     text=interaction.text,
@@ -682,23 +684,26 @@ async def handle_interaction(self, interaction: protocol_schema.AnyInteraction)
 
             case protocol_schema.MessageRating:
                 logger.info(
-                    f"Frontend reports rating of {interaction.message_id=} with {interaction.rating=} by {interaction.user=}."
+                    f"Frontend reports rating of message_id={interaction.message_id} by user={interaction.user}."
                 )
+                logger.debug(f"with {interaction.rating=}")
 
                 pr.store_rating(interaction)
 
             case protocol_schema.MessageRanking:
                 logger.info(
-                    f"Frontend reports ranking of {interaction.message_id=} with {interaction.ranking=} by {interaction.user=}."
+                    f"Frontend reports ranking of message_id={interaction.message_id} by user={interaction.user}."
                 )
+                logger.debug(f"with {interaction.ranking=}")
 
                 _, task = pr.store_ranking(interaction)
                 self.check_condition_for_scoring_state(task.message_tree_id)
 
             case protocol_schema.TextLabels:
                 logger.info(
-                    f"Frontend reports labels of {interaction.message_id=} with {interaction.labels=} by {interaction.user=}."
+                    f"Frontend reports labels of message_id={interaction.message_id} by user={interaction.user}."
                 )
+                logger.debug(f"with {interaction.labels=}")
 
                 _, task, msg = pr.store_text_labels(interaction)