Design Patterns and Best Practices in Java

The retry operator

These are operators to use in the case of a failure that is recoverable, such as a service that is temporarily down. They work by resubscribing in the hope that this time it will complete without error. The available RxJava methods are the following:

• retry: Replays the same flow in case of error forever until it succeeds
• retryUntil: Retries until the given stop function returns true
• retryWhen: Replays the same flow in case of error forever until it succeeds based on a retry logic function that receives the error/exception

In the following example, we use zip which contains only two values to create a retry logic that retries twice to run the failed sequence after a time period or 500 multiplied by the retry count. This ...