codesnips
rust 
use serde::Deserialize;

#[derive(Debug, Deserialize)]
pub struct Page<T> {
    pub items: Vec<T>,
    #[serde(default)]

Streaming a Paginated HTTP API as a Rust Iterator

rust iterator pagination
by codesnips 3 tabs
ruby 
module Middleware
  class RateLimiter
    def initialize(app, redis:, limit:, window:)
      @app = app
      @limiter = SlidingWindowLimiter.new(redis: redis, limit: limit, window: window)
      @limit = limit

Sliding-Window API Rate Limiting with a Rack Middleware and Redis in Rails

rails rack redis
by codesnips 3 tabs
javascript 
export const MAX_VISIBLE = 4;

const DEFAULTS = {
  variant: "info",
  duration: 4000,
};

Toast Notification Queue in React with Context and useReducer

react context-api usereducer
by codesnips 3 tabs
java 
package com.example.billing.config;

import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Configuration;

@Configuration

Type-Safe Spring Boot Config with @ConfigurationProperties Records and Validation

spring-boot configuration validation
by codesnips 4 tabs
php 
<?php

namespace App\Http\Controllers;

use App\Jobs\ImportProductChunk;
use Illuminate\Http\Request;

Chunked CSV Product Import with Laravel Queued Jobs and LazyCollection

laravel queue background-jobs
by codesnips 3 tabs
typescript 
import type { Redis } from "ioredis";

export interface StoredResponse {
  status: "pending" | "completed";
  fingerprint: string;
  httpStatus?: number;

Idempotent POST Requests in Express with a Redis-Backed Middleware

express redis idempotency
by codesnips 3 tabs
python 
from __future__ import annotations

from dataclasses import dataclass, field
from datetime import datetime
from typing import Any, Dict, List

Parsing a Nested JSON Feed into Normalized Dataclasses in Python

dataclasses json parsing
by codesnips 3 tabs
rust 
use clap::{Args, Parser, Subcommand, ValueEnum};

#[derive(Parser, Debug)]
#[command(name = "tasks", version, about = "A tiny task manager")]
pub struct Cli {
    #[arg(short, long, global = true)]

Building a clap Subcommand Dispatcher With a Command Trait in Rust

rust clap cli
by codesnips 3 tabs
ruby 
module Authorizable
  extend ActiveSupport::Concern

  class NotAuthorized < StandardError; end

  included do

Rails Policy Authorization with a before_action Concern and 403 Rendering

rails authorization controllers
by codesnips 3 tabs
ruby 
class User < ApplicationRecord
  has_one_attached :avatar do |attachable|
    attachable.variant :thumb,
      resize_to_limit: [256, 256],
      convert: :webp,
      saver: { quality: 80 }

Attach and Resize an Avatar with an Active Storage Variant in Rails

rails active-storage image-processing
by codesnips 3 tabs
python 
import base64
import json
from datetime import datetime
from typing import NamedTuple

from fastapi import HTTPException

Cursor-Based Pagination in FastAPI with a Dependency and RFC 5988 Link Headers

fastapi pagination cursor
by codesnips 3 tabs
java 
package com.shop.api.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

Version a Spring Boot REST API via Content Negotiation and Custom Media Types

spring-boot rest api-versioning
by codesnips 4 tabs