Feature request: Create a dedicated Cache utility in Powertools (based on current idempotency layer)

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#7,069 4 comentarios 1 reacción 0 asignados Ver en GitHub

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Evaluación

Dificultad
4/5
Tiempo estimado
3-5 días
Aptitud para principiantes
35/100
Tipo de issue
Nueva funcionalidad
Claridad
Bastante claro
Estado de actividad
Estancado
Stack tecnológico
aws, python
Área
backend, cloud, databases

Línea de trabajo

Start by reading the existing Idempotency utility and its storage provider classes, especially the DynamoDB persistence layer referenced in the example. The proposed entry point is aws_lambda_powertools.utilities.caching with Cache, DynamoDBPersistenceLayer, get, and set; determine whether existing storage behavior can be generalized without idempotency-specific record handling. Done means the new cache API, persistence integration, TTL behavior, and relevant tests match the requested example.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

feature-request
Use case

Customers are using the Powertools Idempotency utility for caching purposes. Idempotency is a specific implementation that includes a "caching" mechanism via the storage provider classes. Idempotency is a particular use case, and there is inbuilt functionality for dealing with the records in a specific way which I feel is dangerous for caching use cases.

Solution/User Experience

from aws_lambda_powertools.utilities.caching import (
    DynamoDBPersistenceLayer,
    Cache,
)

table = os.getenv("CACHE_TABLE", "")
persistence_layer = DynamoDBPersistenceLayer(table_name=table)
cache =  Cache(persistence_store=peristsance_layer)
my_ttl = 300

def lambda_handler(event: dict, context: LambdaContext):
    try:
        previous_value = cache.get(event.order_id, "default_value")

        payment: Payment = create_subscription_payment(event, previous_value)

        cache.set(order_id, payment.detail, my_ttl)

        return {
            "payment_id": payment.payment_id,
            "message": "success",
            "statusCode": 200,
        }
    except Exception as exc:
        raise PaymentError(f"Error creating payment {str(exc)}")


def create_subscription_payment(event: dict) -> Payment:
    return Payment(**event)
Alternative solutions
Acknowledgment
Lenguaje dominante
Python
Estrellas
3.3k
Forks
511
Merge medio
3 d 8 h
PR fusionados (30 d)
92

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

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