com.alicloud.openservices.tablestore.model

类 CustomRetryStrategy

java.lang.Object

com.alicloud.openservices.tablestore.model.CustomRetryStrategy

所有已实现的接口:

RetryStrategy

public class CustomRetryStrategy
extends Object
implements RetryStrategy

The TableStore SDK supports custom retry logic RetryStrategy, which is used to determine whether a retry is needed when an exception occurs, and provides the time interval for the current retry. DefaultRetryStrategy is the default retry logic of the TableStore SDK.

构造器概要

构造器

构造器和说明
CustomRetryStrategy()
CustomRetryStrategy(long timeout, TimeUnit unit)
CustomRetryStrategy(long timeout, TimeUnit unit, boolean retryUnIdempotentWriteOperation)

方法概要

限定符和类型	方法和说明
RetryStrategy	clone() Returns a RetryStrategy object of the same type that has not been retried.
int	getRetries() Returns the number of retries for the current operation
long	nextPause(String action, Exception ex) If it returns 0, it means not retryable; otherwise, it returns the interval time for this retry.
boolean	shouldRetry(String action, Exception ex) Idempotent operations: In this strategy, all read-related operations are considered idempotent, while all write-related operations are considered non-idempotent.

从类继承的方法 java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

CustomRetryStrategy

public CustomRetryStrategy()

CustomRetryStrategy

public CustomRetryStrategy(long timeout,
                           TimeUnit unit)

CustomRetryStrategy

public CustomRetryStrategy(long timeout,
                           TimeUnit unit,
                           boolean retryUnIdempotentWriteOperation)

参数:

timeout - Retry timeout duration

unit - Timeout duration unit

retryUnIdempotentWriteOperation - Whether to retry write operations in cases where idempotence is not guaranteed

方法详细资料

clone

public RetryStrategy clone()

从接口复制的说明: RetryStrategy

Returns a RetryStrategy object of the same type that has not been retried.

指定者:

clone 在接口中 RetryStrategy

覆盖:

clone 在类中 Object

返回:

A RetryStrategy object of the same type that has not been retried.

getRetries

public int getRetries()

从接口复制的说明: RetryStrategy

Returns the number of retries for the current operation

指定者:

getRetries 在接口中 RetryStrategy

返回:

the number of retries for the current operation

shouldRetry

public boolean shouldRetry(String action,
                           Exception ex)

Idempotent operations: In this strategy, all read-related operations are considered idempotent, while all write-related operations are considered non-idempotent. Retry strategy, the rules are as follows: 1. If the exception is TableStoreException, it indicates a clear exception returned from the server, and whether it can be retried is judged by shouldRetryWithOTSException. Specifically, for batch operations where some rows fail, retries will only occur if all failed rows are retryable. 2. If the exception is ClientException, it generally represents network errors or similar issues where no server response was received; in this case, only idempotent operations are retried.

参数:

action - Operation name, such as "ListTable", "GetRow", "PutRow", etc.

ex - Error information from the last failed access attempt, either a ClientException or OTSException

返回:

nextPause

public long nextPause(String action,
                      Exception ex)

If it returns 0, it means not retryable; otherwise, it returns the interval time for this retry. The base value of the retry interval will double with the number of retries, but never exceed MAX_BASE. For the smoothness of requests, the actual retry interval will have some random fluctuations based on the base.

指定者:

nextPause 在接口中 RetryStrategy

参数:

action - Operation name, such as "ListTable", "GetRow", "PutRow", etc.

ex - Error information from the last failed attempt, either ClientException or TableStoreException

返回: