你当前正在访问 Microsoft Azure Global Edition 技术文档网站。 如果需要访问由世纪互联运营的 Microsoft Azure 中国技术文档网站，请访问 https://docs.azure.cn。

RetryStrategy Class

Package:

com.microsoft.azure.elasticdb.core.commons.transientfaulthandling

• java.lang.Object
• • com.microsoft.azure.elasticdb.core.commons.transientfaulthandling.RetryStrategy

public class RetryStrategy

Represents a retry strategy that determines the number of retry attempts and the interval between retries.

Field Summary

Modifier and Type	Field and Description
final Duration	DEFAULT_CLIENT_BACKOFF Represents the default amount of time used when calculating a random delta in the exponential delay between retries.
final int	DEFAULT_CLIENT_RETRY_COUNT region Public members Represents the default number of retry attempts.
final boolean	DEFAULT_FIRST_FAST_RETRY Represents the default flag indicating whether the first retry attempt will be made immediately, whereas subsequent retries will remain subject to the retry interval.
final Duration	DEFAULT_MAX_BACKOFF Represents the default maximum amount of time used when calculating the exponential delay between retries.
final Duration	DEFAULT_MIN_BACKOFF Represents the default minimum amount of time used when calculating the exponential delay between retries.
final Duration	DEFAULT_RETRY_INCREMENT Represents the default time increment between retry attempts in the progressive delay policy.
final Duration	DEFAULT_RETRY_INTERVAL Represents the default interval between retries.

Constructor Summary

Constructor	Description
RetryStrategy(String name, boolean firstFastRetry)	Initializes a new instance of the RetryStrategy class.

Method Summary

Modifier and Type	Method and Description
RetryStrategy	getDefaultExponential() Returns a default policy that implements a random exponential retry interval configured with the DEFAULT_CLIENT_RETRY_COUNT, DEFAULT_MIN_BACKOFF, DEFAULT_MAX_BACKOFF, and DEFAULT_CLIENT_BACKOFF parameters. The default retry policy treats all caught exceptions as transient errors.
RetryStrategy	getDefaultFixed() Returns a default policy that implements a fixed retry interval configured with the DEFAULT_CLIENT_RETRY_COUNT and DEFAULT_RETRY_INTERVAL parameters. The default retry policy treats all caught exceptions as transient errors.
RetryStrategy	getDefaultProgressive() Returns a default policy that implements a progressive retry interval configured with the DEFAULT_CLIENT_RETRY_COUNT, DEFAULT_RETRY_INTERVAL, and DEFAULT_RETRY_INCREMENT parameters. The default retry policy treats all caught exceptions as transient errors.
final boolean	getFastFirstRetry()
final String	getName()
RetryStrategy	getNoRetry() Returns a default policy that performs no retries, but invokes the action only once.
abstract ShouldRetry	getShouldRetry() Returns the corresponding ShouldRetry delegate.
final void	setFastFirstRetry(boolean value)

Field Details

DEFAULT_CLIENT_BACKOFF

public static final Duration DEFAULT_CLIENT_BACKOFF= Duration.ofSeconds(10)

Represents the default amount of time used when calculating a random delta in the exponential delay between retries.

DEFAULT_CLIENT_RETRY_COUNT

public static final int DEFAULT_CLIENT_RETRY_COUNT= 10

region Public members

Represents the default number of retry attempts.

DEFAULT_FIRST_FAST_RETRY

public static final boolean DEFAULT_FIRST_FAST_RETRY= true

Represents the default flag indicating whether the first retry attempt will be made immediately, whereas subsequent retries will remain subject to the retry interval.

DEFAULT_MAX_BACKOFF

public static final Duration DEFAULT_MAX_BACKOFF= Duration.ofSeconds(30)

Represents the default maximum amount of time used when calculating the exponential delay between retries.

DEFAULT_MIN_BACKOFF

public static final Duration DEFAULT_MIN_BACKOFF= Duration.ofSeconds(1)

Represents the default minimum amount of time used when calculating the exponential delay between retries.

DEFAULT_RETRY_INCREMENT

public static final Duration DEFAULT_RETRY_INCREMENT= Duration.ofSeconds(1)

Represents the default time increment between retry attempts in the progressive delay policy.

DEFAULT_RETRY_INTERVAL

public static final Duration DEFAULT_RETRY_INTERVAL= Duration.ofSeconds(1)

Represents the default interval between retries.

Constructor Details

RetryStrategy

protected RetryStrategy(String name, boolean firstFastRetry)

Initializes a new instance of the RetryStrategy class.

Parameters:

name - The name of the retry strategy.

firstFastRetry - true to immediately retry in the first attempt; otherwise, false. The subsequent retries will remain subject to the configured retry interval.

Method Details

getDefaultExponential

public static RetryStrategy getDefaultExponential()

Returns a default policy that implements a random exponential retry interval configured with the DEFAULT_CLIENT_RETRY_COUNT, DEFAULT_MIN_BACKOFF, DEFAULT_MAX_BACKOFF, and DEFAULT_CLIENT_BACKOFF parameters. The default retry policy treats all caught exceptions as transient errors.

getDefaultFixed

public static RetryStrategy getDefaultFixed()

Returns a default policy that implements a fixed retry interval configured with the DEFAULT_CLIENT_RETRY_COUNT and DEFAULT_RETRY_INTERVAL parameters. The default retry policy treats all caught exceptions as transient errors.

getDefaultProgressive

public static RetryStrategy getDefaultProgressive()

Returns a default policy that implements a progressive retry interval configured with the DEFAULT_CLIENT_RETRY_COUNT, DEFAULT_RETRY_INTERVAL, and DEFAULT_RETRY_INCREMENT parameters. The default retry policy treats all caught exceptions as transient errors.

getFastFirstRetry

public final boolean getFastFirstRetry()

getName

public final String getName()

getNoRetry

public static RetryStrategy getNoRetry()

Returns a default policy that performs no retries, but invokes the action only once.

getShouldRetry

public abstract ShouldRetry getShouldRetry()

Returns the corresponding ShouldRetry delegate.

Returns:

The ShouldRetry delegate.

setFastFirstRetry

public final void setFastFirstRetry(boolean value)

Parameters:

value