FailMode

rpcx has three fail modes to handle invocation failures and you can set it when create XClient.

FailMode is meaningful only for sync call ().

Example:failfast

Example:

In this mode, rpcx will try another nodes if it gets a failure. it will try retries until the service returns normal response. The retries is defined in and it is 3 in the defaultOption.

Example:failtry

Example:

In this mode, rpcx will send another request to one of servers if the first request has not returned in a given time. rpcx uses the the fastest returned response of the two requests. The given time is configured in .

If you want to learn more details about backup request pattern, you can read Jeff Dean's Achieving Rapid Response Times in Large Online Services