#resilience code explainers

java

@Configuration
public class PaymentGatewayClientConfig {
 
    @Bean

Building a resilient RestClient in Spring

retry http-client backoff

Intermediate 9 steps

go

package retry
 
import (
	"errors"

How a retry budget caps retries in Go

rate-limiting sliding-window concurrency

Intermediate 7 steps

java

public final class CircuitBreaker {
 
    private enum State { CLOSED, OPEN, HALF_OPEN }

How a circuit breaker guards failing calls

state-machine resilience concurrency

Advanced 7 steps

java

@Service
public class InventoryService {
 
    private final RestClient warehouseClient;

Bulkhead-protected HTTP calls in Spring

bulkhead resilience fallback

Intermediate 7 steps

java

@Component
public class RegionCacheWarmer implements SmartInitializingSingleton {
 
    private static final Logger log = LoggerFactory.getLogger(RegionCacheWarmer.class);

Warming a Spring cache at startup

caching startup-hook dependency-injection

Intermediate 7 steps

javascript

import { Component } from 'react';
import { reportError } from './services/telemetry';
 
export class ErrorBoundary extends Component {

How a React ErrorBoundary works

error-handling lifecycle-methods render-props

Intermediate 8 steps

ruby

require "timeout"
require "net/http"
 
class RemoteInventoryClient

Bounding a slow HTTP call with Timeout in Ruby

timeout error-handling http

Intermediate 6 steps

ruby

class CircuitBreaker
  class OpenCircuitError < StandardError; end
 
  def initialize(failure_threshold: 5, reset_timeout: 30, half_open_max: 1)

How a circuit breaker guards failing calls

state-machine fault-tolerance concurrency

Advanced 9 steps

python

import time
import threading
from enum import Enum
from functools import wraps

Building a circuit breaker in Python

circuit-breaker resilience decorators

Advanced 7 steps

php

<?php
 
namespace App\Resilience;

How a circuit breaker guards a flaky service

circuit-breaker resilience caching

Intermediate 9 steps

python

import requests
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry

Building a resilient requests Session

retries backoff http-client

Intermediate 7 steps

php

<?php
 
namespace App\Services;

Resilient HTTP retries with Laravel's client

http-client retry-logic error-handling

Intermediate 7 steps

ruby

module Retryable
  class RetriesExhausted < StandardError; end
 
  RETRYABLE_ERRORS = [

Exponential backoff retries in Ruby

retry-logic exponential-backoff error-handling

Intermediate 7 steps