codesnips

resilience

ruby 
class SyncContactJob < ApplicationJob
  queue_as :external

  BACKOFF = ->(executions) do
    (2**executions) + rand(0.0..1.0) # exponential + jitter, in seconds
  end

Exponential Backoff with Jitter for Flaky External API Calls in ActiveJob

rails activejob background-jobs
by codesnips 3 tabs
go 
package httpretry

import (
	"math/rand"
	"time"
)

Exponential Backoff With Full Jitter for Flaky HTTP Calls in Go

go http retry
by codesnips 3 tabs
rust 
use std::time::Duration;
use rand::Rng;

#[derive(Clone, Debug)]
pub struct BackoffPolicy {
    pub base_delay: Duration,

Exponential Backoff With Jitter for Retrying Fallible Async Operations in Rust

rust tokio async
by codesnips 3 tabs
python 
import random
from dataclasses import dataclass
from typing import Iterator


@dataclass(frozen=True)

Retry Flaky HTTP Requests with Exponential Backoff and Full Jitter in Python

python requests retry
by codesnips 3 tabs
java 
package com.example.health;

import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.stereotype.Component;

Custom Spring Boot HealthIndicator for Queue Depth on /actuator/health

spring-boot actuator health-check
by codesnips 4 tabs
typescript 
const RETRYABLE_STATUS = new Set([408, 429, 500, 502, 503, 504]);

export function isRetryable(error: unknown, response?: Response): boolean {
  if (response) {
    return RETRYABLE_STATUS.has(response.status);
  }

Retrying Fetch With Exponential Backoff and Full Jitter in TypeScript

retry backoff jitter
by codesnips 3 tabs
java 
import java.time.Duration;
import java.util.concurrent.ThreadLocalRandom;
import java.util.function.Predicate;

public final class RetryPolicy {
    private final int maxAttempts;

Async Retry With Exponential Backoff and Full Jitter Using ScheduledExecutorService

java retry backoff
by codesnips 3 tabs
ruby 
class CircuitBreaker
  class CircuitOpenError < StandardError; end

  def initialize(name, redis: Redis.current, failure_threshold: 5, failure_window: 60, cooldown: 30)
    @key = "circuit:#{name}"
    @redis = redis

Service-Level “Circuit Breaker” (Simple)

rails reliability http
by codesnips 3 tabs
javascript 
const RETRYABLE_STATUS = new Set([408, 429, 500, 502, 503, 504]);

export function fullJitter(attempt, baseDelay = 300, maxDelay = 10_000) {
  const ceiling = Math.min(maxDelay, baseDelay * 2 ** attempt);
  return Math.random() * ceiling;
}

Fetch With Exponential Backoff and Full Jitter Retries

fetch retry exponential-backoff
by codesnips 3 tabs