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KeyValueStoreClient | API | Crawlee for Python · Fast, reliable Python web crawlers.

An abstract class for key-value store (KVS) storage clients.

Key-value stores clients provide an interface for accessing and manipulating KVS storage. They handle operations like getting, setting, deleting KVS values across different storage backends.

Storage clients are specific to the type of storage they manage (Dataset, KeyValueStore, RequestQueue), and can operate with various storage systems including memory, file system, databases, and cloud storage solutions.

This abstract class defines the interface that all specific KVS clients must implement.

• async delete_value(*, key): None

• Overrides KeyValueStoreClient.delete_value

  Delete a value from the key-value store by its key.

  The backend method for the KeyValueStore.delete_value call.

  Parameters
  • keyword-onlykey: str
  Returns None

• Overrides KeyValueStoreClient.drop

  Drop the whole key-value store and remove all its values.

  The backend method for the KeyValueStore.drop call.

  Returns None

• async get_public_url(*, key): str

• Overrides KeyValueStoreClient.get_public_url

  Get the public URL for the given key.

  The backend method for the KeyValueStore.get_public_url call.

  Parameters
  • keyword-onlykey: str
  Returns str

• Overrides KeyValueStoreClient.iterate_keys

  Iterate over all the existing keys in the key-value store.

  The backend method for the KeyValueStore.iterate_keys call.

  Parameters
  • optionalkeyword-onlyexclusive_start_key: str | None = None
  • optionalkeyword-onlylimit: int | None = None
  Returns AsyncIterator[KeyValueStoreRecordMetadata]

• Overrides KeyValueStoreClient.purge

  Purge all items from the key-value store.

  The backend method for the KeyValueStore.purge call.

  Returns None

• async record_exists(*, key): bool

• Overrides KeyValueStoreClient.record_exists

  Check if a record with the given key exists in the key-value store.

  The backend method for the KeyValueStore.record_exists call.

  Parameters
  • keyword-onlykey: str

    The key to check for existence.

  Returns bool

• async set_value(*, key, value, content_type): None

• Overrides KeyValueStoreClient.set_value

  Set a value in the key-value store by its key.

  The backend method for the KeyValueStore.set_value call.

  Parameters
  • keyword-onlykey: str
  • keyword-onlyvalue: Any
  • optionalkeyword-onlycontent_type: str | None = None
  Returns None

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