3.41.0

Issues

• Bug: a result that is not JSON serializable leaves the idempotency record stuck as INPROGRESS

  buggood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8721 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  3

  

• Bug: output_serializer=PydanticSerializer crashes at import under from __future__ import annotations

  buggood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8722 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  6

  

• Bug: DataclassSerializer cannot save datetime/UUID fields and does not rebuild nested dataclasses on replay

  buggood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8723 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  5

  

• Bug: with a DynamoDB composite key, DataRecord.idempotency_key is the static partition key value

  buggood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8724 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  3

  

• Bug: idempotency payloads with set, frozenset or bytes fields cannot be hashed

  buggood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8725 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  6

  

• Bug: Redis orphan lock timeout ignores expires_after_seconds and is always 10 seconds

  buggood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8726 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  3

  

• Bug: Redis layer fails the invocation instead of retrying when a record expires between SET NX and GET

  buggood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8727 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  4

  

• Bug: POWERTOOLS_IDEMPOTENCY_DISABLED set to an empty or non-boolean value crashes every invocation

  buggood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8728 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  4

  

• Docs: IdempotencyConfig docstring says local_cache_max_items defaults to 1024, it is 256

  documentationgood first issuehelp wantedidempotency
  aws-powertools/powertools-lambda-python#8729 · Filter by author leandrodamascena opened on Oct 31, 2026 · 3.41.0
  3

  

• docs(idempotency): fix local_cache_max_items default in IdempotencyConfig docstring

  size/XS
  Unread
  aws-powertools/powertools-lambda-python#8731·lechakrawarthy opened Oct 31, 2026 · Updated Nov 1, 2026
  3

  

• fix(idempotency): treat empty or unparsable POWERTOOLS_IDEMPOTENCY_DISABLED as not disabled

  size/Mtests
  Unread
  aws-powertools/powertools-lambda-python#8734·lechakrawarthy opened Nov 1, 2026 · Updated Nov 1, 2026
  2

  

• fix(idempotency): retry Redis inconsistent state errors

  size/Mtests
  Unread
  aws-powertools/powertools-lambda-python#8736·coughlmao opened Nov 1, 2026 · Updated Nov 1, 2026
  3

  

• fix(idempotency): resolve postponed return annotations for serializer classes

  documentationsize/Ltests
  Unread
  aws-powertools/powertools-lambda-python#8738·sumedh-aerram opened Nov 1, 2026 · Updated Nov 1, 2026
  3

  

• fix(idempotency): use the record key for DynamoDB composite items

  documentationsize/Ltests
  Unread
  aws-powertools/powertools-lambda-python#8739·sumedh-aerram opened Nov 1, 2026 · Updated Nov 1, 2026
  2

  

• Bug: POWERTOOLS_PARAMETERS_MAX_AGE set to an empty or non-integer value crashes every parameters call

  buggood first issueparameters
  aws-powertools/powertools-lambda-python#8747 · Filter by author AP24110011695 opened on Nov 2, 2026 · 3.41.0
  4