codesnips
rust 
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AppConfig {
    #[serde(default)]
    pub server: ServerConfig,

Layered Config Loading From TOML File and Environment Variables in Rust

config serde toml
by codesnips 3 tabs
java 
package com.shop.security;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.access.PermissionEvaluator;
import org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler;

Guard a Checkout Endpoint with @PreAuthorize and a Custom PermissionEvaluator in Spring Boot

spring-boot spring-security authorization
by codesnips 3 tabs
typescript 
import { Injectable } from '@nestjs/common';
import { HealthIndicator, HealthIndicatorResult, HealthCheckError } from '@nestjs/terminus';
import { PrismaService } from '../prisma/prisma.service';

@Injectable()
export class PrismaHealthIndicator extends HealthIndicator {

NestJS Health Checks With Terminus and a Custom Prisma Indicator

nestjs terminus health-checks
by codesnips 3 tabs
python 
import json
import secrets
import time
from typing import Optional

import redis.asyncio as redis

Sliding-Window Session Token Expiry With FastAPI Middleware and Redis

fastapi redis sessions
by codesnips 3 tabs
php 
<?php

namespace App\Feature;

use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Contracts\Service\ResetInterface;

Request-Scoped Feature Flags in Symfony with a Twig Extension and Controller Gate

symfony feature-flags twig
by codesnips 4 tabs
javascript 
import { useCallback, useEffect, useState } from 'react';

function parseSearch(search) {
  const params = new URLSearchParams(search);
  const out = {};
  for (const [key, value] of params.entries()) out[key] = value;

Sync React Form State to the URL Query String with a Debounced useSearchParams Hook

react hooks url-state
by codesnips 3 tabs
python 
import uuid
from django.db import models


class Cart(models.Model):
    OPEN = "open"

Prevent Duplicate Order Submissions in Django with select_for_update Row Locking

django postgres concurrency
by codesnips 3 tabs
php 
<?php

use App\Http\Controllers\CommentController;
use Illuminate\Support\Facades\Route;

// The ->scoped() call forces {comment} to resolve through $post->comments,

Scoped Route-Model Binding for Nested Resources in Laravel

laravel routing route-model-binding
by codesnips 3 tabs
typescript 
import sharp from 'sharp';

export interface Variant {
  name: string;
  width: number;
  quality: number;

Generate WebP Image Thumbnails on Upload with Sharp and Express

express sharp image-processing
by codesnips 3 tabs
go 
package worker

import (
	"context"
	"errors"
	"log"

Fan-Out Worker Pool With Context Cancellation and Graceful Shutdown in Go

go concurrency goroutines
by codesnips 2 tabs
javascript 
const { WebSocketServer } = require('ws');
const crypto = require('crypto');

const wss = new WebSocketServer({ port: 8080 });

function broadcast(payload, except) {

Reconnecting WebSocket Chat Client with a Broadcasting Node Server

websocket realtime reconnection
by codesnips 3 tabs
erb 
{% load cache %}
<section class="dashboard">
  <h1>{{ team.name }} — Overview</h1>

  {% cache 3600 team_order_stats team.id stats_version %}
    <div class="stat-grid">

Cache an Expensive Dashboard Fragment with Django's Template Cache Tag and Signal-Based Invalidation

django caching template-cache
by codesnips 3 tabs