Code Explainers

Code explainers tagged #race-conditions

typescript 
import { useState, useEffect, useRef, useCallback } from "react";
 
interface Suggestion {
  id: string;

A debounced autocomplete hook in React

debounce custom-hooks abortcontroller
Advanced 7 steps
typescript 
type Task<T> = () => Promise<T>;
 
export class Mutex {
  private queue: Array<() => void> = [];

Building an async mutex in TypeScript

concurrency promises locking
Advanced 7 steps
ruby 
class PaymentsController < ApplicationController
  before_action :require_idempotency_key
 
  def create

Idempotent payment creation in Rails

idempotency transactions race-conditions
Advanced 10 steps
typescript 
type SearchResult = {
  id: string;
  title: string;
};

Cancelling stale searches with AbortController

abortcontroller cancellation async
Intermediate 7 steps