codesnips
javascript 
const jwt = require('jsonwebtoken');

const SECRET = process.env.JWT_SECRET;
const ALGORITHM = 'HS256';
const ACCESS_TTL = '15m';

JWT Authentication Middleware in Express That Populates req.user

express jwt authentication
by codesnips 3 tabs
javascript 
import { createContext, useContext, useEffect, useMemo, useState } from 'react';
import { fetchCurrentUser, postLogin, postLogout } from './api';

const AuthContext = createContext(null);

export function AuthProvider({ children }) {

Protecting React Routes with an Auth Context and a RequireAuth Wrapper

react react-router authentication
by codesnips 4 tabs
javascript 
const BASE_URL = "/api/search";

export async function searchProducts(query, { signal } = {}) {
  const params = new URLSearchParams({ q: query, limit: "10" });
  const res = await fetch(`${BASE_URL}?${params}`, {
    signal,

Cancel Stale Autocomplete Requests with AbortController in a React Hook

react hooks abortcontroller
by codesnips 3 tabs
go 
package feed

import "time"

type Event struct {
	ID        string    `json:"id"`

Stream and Decode Newline-Delimited JSON (NDJSON) from an HTTP Response Body in Go

go ndjson streaming
by codesnips 3 tabs
rust 
use async_trait::async_trait;
use std::io;

#[async_trait]
pub trait ConnectionFactory: Send + Sync + 'static {
    type Connection: Send + 'static;

Building a Bounded Async Database Connection Pool With Tokio Semaphore

rust tokio async
by codesnips 3 tabs
java 
public class ProductAggregator implements AutoCloseable {

    private final RemoteServices services;
    private final ExecutorService pool = Executors.newFixedThreadPool(8);

    public ProductAggregator(RemoteServices services) {

Coordinate Parallel Remote Lookups With CompletableFuture in Java

java completablefuture concurrency
by codesnips 3 tabs
ruby 
module Retryable
  module_function

  def with_retries(tries: 3, base: 0.3, cap: 5.0, on: [StandardError])
    attempt = 0
    begin

Retry a Flaky HTTP Call with Exponential Backoff Using a Rails Service Object

rails http retries
by codesnips 3 tabs
java 
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;

import java.time.Instant;

Nightly Cleanup of Expired Refresh Tokens with Spring @Scheduled and a Bulk Delete Query

spring-boot scheduling cron
by codesnips 4 tabs
ruby 
class ProjectPresenter
  def initialize(project, include_tasks: true)
    @project = project
    @include_tasks = include_tasks
  end

Building Nested JSON Presenters in Rails Without ActiveModel::Serializer

rails presenter json
by codesnips 3 tabs
java 
package com.example.storage;

import jakarta.validation.Valid;
import jakarta.validation.constraints.Min;
import jakarta.validation.constraints.NotBlank;
import jakarta.validation.constraints.Pattern;

Bind and Validate Grouped App Settings with @ConfigurationProperties in Spring Boot

spring-boot configuration validation
by codesnips 3 tabs
ruby 
class OrderPresenter < SimpleDelegator
  attr_reader :current_user

  def initialize(order, current_user:)
    super(order)
    @current_user = current_user

Presenter + fast_jsonapi Serializer for Clean JSON:API Responses in Rails

rails json-api serialization
by codesnips 3 tabs
php 
<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

Resize and Store User Avatars with Intervention Image in Laravel

laravel file-upload image-processing
by codesnips 3 tabs