Support for Retry with LINEAR_BACKOFF

[venkag]

Retry has support for two different backoff methods:

n - Configuration Parameter that defines "retryDelaySeconds"
i - Retry count (a given iteration number actually). If configuration parameter "retryCount" is 3, i runs from 0..2.

1. FIXED - Every retry is performed with a delay of n number of seconds (i is not accounted for).
2. EXPONENTIAL_BACKOFF - Every retry is performed with a n* (2^i) number of seconds.

I would like to add a BACKOFF method that sits between FIXED and EXPONENTIAL and name it as LINEAR_BACKOFF. With this backoff method, every retry will be performed with a delay of n * (s*i) number of seconds.

A new configuration parameter is added to be able to control the slope of the line.

s - slope or scale factor that controls how slow or fast the delay grows linearly.

Given, this is requires simple change and does not effect any other feature (or default configurations etc.), a PR (#2699) was already raised.

cc: @aravindanr @apanicker-nflx @kishorebanala

[venkag]

Graphical representation of the retry behavior

[venkag]

Updating the thread on the status of the PR: #2699 is merged. Thanks @apanicker-nflx

[apanicker-nflx]

Released in v3.5.0