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# messaging
# `prefect_redis.messaging`
## Functions
### `ephemeral_subscription`
```python theme={null}
ephemeral_subscription(topic: str, source: Optional[str] = None, group: Optional[str] = None) -> AsyncGenerator[dict[str, Any], None]
```
### `break_topic`
```python theme={null}
break_topic()
```
## Classes
### `RedisMessagingPublisherSettings`
Settings for the Redis messaging publisher.
No settings are required to be set by the user but any of the settings can be
overridden by the user using environment variables.
### `RedisMessagingConsumerSettings`
Settings for the Redis messaging consumer.
No settings are required to be set by the user but any of the settings can be
overridden by the user using environment variables.
### `Cache`
**Methods:**
#### `clear_recently_seen_messages`
```python theme={null}
clear_recently_seen_messages(self) -> None
```
#### `forget_duplicates`
```python theme={null}
forget_duplicates(self, attribute: str, messages: list[M]) -> None
```
#### `without_duplicates`
```python theme={null}
without_duplicates(self, attribute: str, messages: list[M]) -> list[M]
```
### `RedisStreamsMessage`
A message sent to a Redis stream.
**Methods:**
#### `acknowledge`
```python theme={null}
acknowledge(self) -> None
```
### `Subscription`
A subscription-like object for Redis. We mimic the memory subscription interface
so that we can set max\_retries and handle dead letter queue storage in Redis.
### `Publisher`
**Methods:**
#### `publish_data`
```python theme={null}
publish_data(self, data: bytes, attributes: dict[str, Any])
```
### `Consumer`
Consumer implementation for Redis Streams with DLQ support.
**Methods:**
#### `process_pending_messages`
```python theme={null}
process_pending_messages(self, handler: MessageHandler, redis_client: Redis, message_batch_size: int, start_id: str = '0-0')
```
#### `run`
```python theme={null}
run(self, handler: MessageHandler) -> None
```
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