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codecitizen/exponential_backoff.clj

Created December 5, 2016 09:55
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Exponential Backoff in Clojure
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exponential_backoff.clj
(def time-slot-ms 52)
(def truncate 10)
(defn ** [b e]
(reduce * (repeat e b)))
(defn with-exp-backoff [action!]
(loop [c 0]
(let [slot (* time-slot-ms (dec (** 2 c)))]
(println "Sleeping for " slot "ms.")
(Thread/sleep slot)
(when (not (action!))
(recur (if (>= c truncate) c (inc c)))))))
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