@daiso-tech/core
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The library offers flexible, framework-agnostic solutions for modern web applications, built on adaptable components that integrate seamlessly with popular frameworks like Next Js.
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JavaScript
/**
* @module Async
*/
import { callInvokable, isInvokable, TimeSpan, } from "../../../utilities/_module-exports.js";
import { withJitter } from "../../../async/backof-policies/_shared.js";
/**
* Exponential backoff policy with jitter
*
* IMPORT_PATH: `"@daiso-tech/core/async"`
* @group BackoffPolicies
*/
export function exponentialBackoffPolicy(settings = {}) {
return (attempt, error) => {
if (isInvokable(settings)) {
const dynamicSettings = callInvokable(settings, error);
if (dynamicSettings === undefined) {
settings = {};
}
else {
settings = dynamicSettings;
}
}
let { maxDelay = 60_000, minDelay = 1_000 } = settings;
if (maxDelay instanceof TimeSpan) {
maxDelay = maxDelay.toMilliseconds();
}
if (minDelay instanceof TimeSpan) {
minDelay = minDelay.toMilliseconds();
}
const { multiplier = 2, jitter = 0.5, _mathRandom = Math.random, } = settings;
const exponential = Math.min(maxDelay, minDelay * Math.pow(multiplier, attempt));
return TimeSpan.fromMilliseconds(withJitter(jitter, exponential, _mathRandom));
};
}
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