Code Explainers

Code explainers tagged #middleware

go 
package middleware
 
import (
	"bytes"

Building a response cache middleware in Gin

middleware caching concurrency
Intermediate 8 steps
javascript 
class TokenBucket {
  constructor({ capacity, refillPerSecond }) {
    this.capacity = capacity;
    this.refillPerSecond = refillPerSecond;

How token-bucket rate limiting works in Express

rate-limiting token-bucket middleware
Intermediate 7 steps
rust 
use std::time::Duration;
 
use axum::{
    extract::State,

Rate-limiting an expensive Axum route with tower

middleware concurrency-limiting shared-state
Intermediate 9 steps
php 
<?php
 
namespace App\Http\Middleware;
 

ETag caching and gzip in Laravel middleware

middleware http-caching etag
Intermediate 8 steps
rust 
use axum::{
    routing::get,
    Json, Router,
};

Response compression in Axum with tower-http

middleware compression http
Intermediate 6 steps
go 
package server
 
import (
	"net/http"

Serving cached static assets in Gin

caching static-files middleware
Intermediate 7 steps
go 
package middleware
 
import (
	"net/http"

Per-IP rate limiting middleware in Gin

rate-limiting token-bucket concurrency
Intermediate 7 steps
go 
package middleware
 
import (
	"net/http"

Building a CORS middleware in Gin

cors middleware closures
Intermediate 9 steps
go 
package middleware
 
import (
	"context"

How a request-timeout middleware works in Gin

middleware context goroutines
Advanced 6 steps
javascript 
import { NextResponse } from 'next/server';
import { jwtVerify } from 'jose';
 
const PROTECTED_PREFIXES = ['/dashboard', '/settings', '/billing'];

Gating routes with Next.js middleware and JWTs

authentication middleware jwt
Intermediate 8 steps
go 
package middleware
 
import (
	"bytes"

Capturing response bodies in Gin middleware

middleware response-capture struct-embedding
Intermediate 7 steps
javascript 
const express = require('express');
const session = require('express-session');
const RedisStore = require('connect-redis').default;
const { createClient } = require('redis');

Redis-backed session auth in Express

sessions authentication redis
Intermediate 8 steps
go 
package middleware
 
import (
	"net/http"

How a www-to-apex redirect middleware works in Gin

middleware http-redirect closures
Intermediate 5 steps
php 
<?php
 
namespace App\Http\Middleware;
 

Verifying webhook signatures in Laravel

hmac middleware webhooks
Intermediate 7 steps
rust 
use std::time::Duration;
 
use axum::{
    body::Body,

Structured request tracing in Axum

middleware observability tracing
Intermediate 7 steps
go 
package middleware
 
import (
	"strconv"

Instrumenting a Gin API with Prometheus

middleware observability metrics
Intermediate 6 steps
php 
<?php
 
namespace App\Http;
 

Building an onion middleware pipeline in PHP

middleware closures array-reduce
Advanced 9 steps
go 
package httpx
 
import (
	"net/http"

A retrying HTTP transport in Go

http middleware retry
Intermediate 8 steps