# Retry the Image Loading

Managing the retry mechanism when an error happens during loading.

## Overview

Use ``KingfisherOptionsInfoItem/retryStrategy(_:)`` along with a `RetryStrategy` implementation to easily set up a 
retry mechanism for image setting operations when an error occurs. 

This combination allows you to define retry logic, including the number of retries and the conditions under which a 
retry should be attempted, ensuring a more resilient image loading process.


## Basic Retry Strategy

``DelayRetryStrategy`` is a predefined retry strategy in Kingfisher. It allows you to specify the `maxRetryCount` and 
the `retryInterval` to easily configure retry behavior. This setup enables quick implementation of a retry mechanism: 

```swift
let retry = DelayRetryStrategy(
  maxRetryCount: 5, 
  retryInterval: .seconds(3)
)
imageView.kf.setImage(with: url, options: [.retryStrategy(retry)])
```

This implements a retry mechanism that attempts to reload the target URL up to 5 times, with a fixed 3-second interval
between each try. 

#### Other retry interval

For a more dynamic approach, you can also select `.accumulated(3)` as the retry interval results in progressively 
increasing delays between attempts, specifically `3 -> 6 -> 9 -> 12 -> 15` seconds for each subsequent retry. 
Additionally, for ultimate flexibility, `.custom` allows you to define a unique pattern for retry intervals, tailoring 
the retry logic to your specific requirements.

If you need more control for the retry strategy, implement your own type that conforms to ``RetryStrategy``.