⚡ Bolt: Optimized AWS Service Clients with Connection Pooling and Retries

.jules/bolt.md

@@ -17,3 +17,7 @@
 ## 2026-06-10 - [Stream] Faster Cross-Model Validation with from_attributes
 **Learning:** When validating a Pydantic model using data from another Pydantic model (e.g., transforming a `SourceItem` to a `DestinationItem`), using `Model.model_validate(other_model, from_attributes=True)` is significantly faster and more memory-efficient than `Model.model_validate(other_model.model_dump())`. It bypasses the overhead of serializing the source model into an intermediate Python dictionary.
 **Action:** Use `from_attributes=True` for efficient model-to-model transformations, especially in high-throughput data processing paths like DynamoDB Streams or SQS batch processing.
+
+## 2026-06-11 - [General] Optimized AWS Service Clients with botocore.config.Config
+**Learning:** Configuring Boto3 clients with `tcp_keepalive=True` and `retries={"max_attempts": 3, "mode": "standard"}` in the `botocore.config.Config` significantly improves connection resilience and reduces latency in AWS Lambda. TCP keep-alive ensures that connections in the pool remain active, avoiding the overhead of re-establishing TCP/TLS handshakes, while the 'standard' retry mode provides more robust exponential backoff.
+**Action:** Always use a centralized `botocore.config.Config` when instantiating Boto3 resources or clients in Lambda templates to optimize performance and reliability.

templates/queue.py

@@ -1,4 +1,5 @@
 from boto3 import client
+from botocore.config import Config
 
 
 class Queue:
@@ -11,8 +12,10 @@ def __init__(self, queue_url: str, region_name: str = "us-east-1") -> None:
             queue_url: The URL of the SQS queue.
             region_name: The region to use.
         """
+        # Optimize connection resilience and performance with TCP keepalive and standard retries
+        config = Config(tcp_keepalive=True, retries={"max_attempts": 3, "mode": "standard"})
         self._queue_url = queue_url
-        self._client = client("sqs", region_name=region_name)
+        self._client = client("sqs", region_name=region_name, config=config)
 
     def publish(self, message: str) -> None:
         """Publish a processed message to SQS.

templates/repository.py

@@ -1,4 +1,5 @@
 from boto3 import resource
+from botocore.config import Config
 
 
 class Repository:
@@ -12,7 +13,9 @@ def __init__(self, table_name: str) -> None:
         Args:
             table_name: The name of the DynamoDB table to operate on.
         """
-        self._table = resource("dynamodb").Table(table_name)
+        # Optimize connection resilience and performance with TCP keepalive and standard retries
+        config = Config(tcp_keepalive=True, retries={"max_attempts": 3, "mode": "standard"})
+        self._table = resource("dynamodb", config=config).Table(table_name)
 
     def get_item(self, item_id: str) -> dict | None:
         """Retrieve an item by its ID.