Retry

```
@Inherited
 @Documented
 @Retention(value=RUNTIME)
 @Target(value={METHOD,TYPE})
public @interface Retry
```
The retry annotation to define the number of retries. Any invalid config value causes FaultToleranceDefinitionException.
When a method returns and the retry policy is present, the following rules are applied:
1. If the method returns normally (doesn't throw), the result is simply returned.
2. Otherwise, if the thrown object is assignable to any value in the abortOn() parameter, the thrown object is rethrown.
3. Otherwise, if the thrown object is assignable to any value in the retryOn() parameter, the method call is retried.
4. Otherwise the thrown object is rethrown.
If a method throws a Throwable which is not an Error or Exception, non-portable behavior results.
See Also:

maxRetries(), delay(), delayUnit(), maxDuration(), durationUnit(), jitter(), jitterDelayUnit(), retryOn(), abortOn()

Examples (en):

mp-faulttolerance-retry, mp-faulttolerance-fallback

Examples (es):

mp-faulttolerance-retry, mp-faulttolerance-fallback

Examples (pt):

mp-faulttolerance-retry, mp-faulttolerance-fallback

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element and Description
`java.lang.Class<? extends java.lang.Throwable>[]`	`abortOn` The list of exception types that should not trigger a retry.
`long`	`delay` The delay between retries.
`java.time.temporal.ChronoUnit`	`delayUnit` The unit for `delay()`.
`java.time.temporal.ChronoUnit`	`durationUnit` The duration unit for `maxDuration()`.
`long`	`jitter` Set the jitter to randomly vary retry delays for.
`java.time.temporal.ChronoUnit`	`jitterDelayUnit` The delay unit for `jitter()`.
`long`	`maxDuration` The max duration.
`int`	`maxRetries` The max number of the retries.
`java.lang.Class<? extends java.lang.Throwable>[]`	`retryOn` The list of exception types that should trigger a retry.

- Element Detail
  - maxRetries
```
public abstract int maxRetries
```
    The max number of the retries.
    
    Returns:
    
    the max number of retries. -1 means retry forever. The value must be greater than or equal to -1.
    
    Default:
    
    3
- - delay
```
public abstract long delay
```
    The delay between retries. Defaults to 0. The value must be greater than or equal to 0.
    
    Returns:
    
    the delay time
    
    Default:
    
    0L
- - delayUnit
```
public abstract java.time.temporal.ChronoUnit delayUnit
```
    The unit for delay(). Defaults to ChronoUnit.MILLIS if not set.
    
    Returns:
    
    the delay unit
    
    Default:
    
    java.time.temporal.ChronoUnit.MILLIS
- - maxDuration
```
public abstract long maxDuration
```
    The max duration. The max duration must be greater than the delay duration if set. 0 means not set.
    
    Returns:
    
    the maximum duration to perform retries for
    
    Default:
    
    180000L
- - durationUnit
```
public abstract java.time.temporal.ChronoUnit durationUnit
```
    The duration unit for maxDuration(). Defaults to ChronoUnit.MILLIS if not set.
    
    Returns:
    
    the duration unit
    
    Default:
    
    java.time.temporal.ChronoUnit.MILLIS
- - jitter
```
public abstract long jitter
```
    Set the jitter to randomly vary retry delays for. The value must be greater than or equals to 0. 0 means not set.
    The effective delay will be [delay - jitter, delay + jitter] and always greater than or equal to 0. Negative effective delays will be 0.
    
    Returns:
    
    the jitter that randomly vary retry delays by. e.g. a jitter of 200 milliseconds will randomly add between -200 and 200 milliseconds to each retry delay.
    
    Default:
    
    200L
- - jitterDelayUnit
```
public abstract java.time.temporal.ChronoUnit jitterDelayUnit
```
    The delay unit for jitter(). Defaults to ChronoUnit.MILLIS if not set.
    
    Returns:
    
    the jitter delay unit
    
    Default:
    
    java.time.temporal.ChronoUnit.MILLIS
- - retryOn
```
public abstract java.lang.Class<? extends java.lang.Throwable>[] retryOn
```
    The list of exception types that should trigger a retry.
    Note that if a method throws a Throwable which is not an Error or Exception, non-portable behavior results.
    
    Returns:
    
    the exception types on which to retry
    
    Default:
    
    java.lang.Exception.class
- - abortOn
```
public abstract java.lang.Class<? extends java.lang.Throwable>[] abortOn
```
    The list of exception types that should not trigger a retry.
    This list takes priority over the types listed in retryOn().
    Note that if a method throws a Throwable which is not an Error or Exception, non-portable behavior results.
    
    Returns:
    
    the exception types on which to abort (not retry)
    
    Default:
    
    {}

Annotation Type Retry

Optional Element Summary

Element Detail

maxRetries

delay

delayUnit

maxDuration

durationUnit

jitter

jitterDelayUnit

retryOn

abortOn