backoff-promise:承诺的指数退避

退让承诺 承诺的指数退避 示例 1 var i = 0 , Backoff = require ( 'backoff-promise' ) , backoff = new Backoff ( ) ; var myPromise = function ( ) { return new Promise ( function ( resolve , reject ) { if ( i ++ < 5 ) { reject ( new Error ( 'transient-error' ) ) ; } else { resolve ( 'foo' ) ; } } ) ; } ; return backoff . run ( function ( ) { return myPromise ( ) ; } ) ; 示例 2：不同类