Class ExponentialBackoff

constructor

• new ExponentialBackoff(maxAttempts?, rate?, interval?, startTime?): ExponentialBackoff

• Exponential backoff starting at a specified time Defaults to 1.35^attempt seconds. This results in about four minutes total time for 15 attempts.

  Parameters

  • maxAttempts: number = 15

    attempt at which to stop (exclusive, starting at 0)
  • rate: number = 1.35
  • interval: number = 1000
  • startTime: number = ...

    unix timestamp in ms

  Returns ExponentialBackoff

attempt

lastSleepTime

maxAttempts

startTime

getDelayForNextAttempt

• getDelayForNextAttempt(): number

• Get the delay until next attempt, assuming the last attempt was the previous index. Time elapsed since the last call is subtracted from the delay. Attempt 0 is always immediate.

  Returns number

getTotalTime

• getTotalTime(): number

• Gets the total time in milliseconds this exponential backoff will take, if all attempts are used.

  Returns number

isActive

• isActive(): boolean

• Returns true, if there are attempts left

  Returns boolean

waitForNextAttempt

• waitForNextAttempt(): Promise<boolean>

• Wait for the next attempt. Time elapsed since the last call is subtracted from the delay. Attempt 0 is always immediate. Increases internal attempt counter

  Returns Promise<boolean>

  true, if waited for the time of the current step, false if the maxAttempt was reached