# cache

`core.cache`

Cache management for data processing.

## Classes

| Name | Description |
|----|----|
| [CacheManager](#nova_fde.core.cache.CacheManager) | Data cache management system. |

### CacheManager

``` python
core.cache.CacheManager(self, cache_dir, expiry_hours=24, batch_size=10000)
```

Data cache management system.

#### Methods

| Name | Description |
|----|----|
| [clear_expired_cache](#nova_fde.core.cache.CacheManager.clear_expired_cache) | Remove expired cache files. |
| [get_cached_data](#nova_fde.core.cache.CacheManager.get_cached_data) | Retrieve cached data if available and not expired. |
| [save_to_cache](#nova_fde.core.cache.CacheManager.save_to_cache) | Save DataFrame to cache. |

##### clear_expired_cache

``` python
core.cache.CacheManager.clear_expired_cache()
```

Remove expired cache files.

##### get_cached_data

``` python
core.cache.CacheManager.get_cached_data(query_name, validate=True)
```

Retrieve cached data if available and not expired.

###### Parameters

| Name       | Type | Description                                      | Default    |
|------------|------|--------------------------------------------------|------------|
| query_name | str  | Name of the cached query to retrieve             | *required* |
| validate   | bool | Whether to validate cached data, by default True | `True`     |

###### Returns

| Name | Type | Description |
|----|----|----|
|  | Optional\[pd.DataFrame\] | Cached data if available and valid, None otherwise |

##### save_to_cache

``` python
core.cache.CacheManager.save_to_cache(df, query_name)
```

Save DataFrame to cache.

###### Parameters

| Name       | Type         | Description                           | Default    |
|------------|--------------|---------------------------------------|------------|
| df         | pd.DataFrame | Data to cache                         | *required* |
| query_name | str          | Name of the query for the cached data | *required* |