codesnips

511 code snips · on codesnips 27 days
lua
-- KEYS[1] = bucket key
-- ARGV[1] = capacity, ARGV[2] = refill_rate (tokens/sec)
-- ARGV[3] = now_ms, ARGV[4] = requested tokens
local capacity    = tonumber(ARGV[1])
local refill_rate = tonumber(ARGV[2])
local now_ms      = tonumber(ARGV[3])

Token Bucket Rate Limiting in a Servlet Filter with Redis and Lua

rate-limiting token-bucket servlet
by codesnips 3 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
php
<?php

namespace App\Jobs;

use App\Models\Invoice;
use App\Services\StripeGateway;

Preventing Double-Charges in Laravel with WithoutOverlapping Job Middleware

laravel queues background-jobs
by codesnips 3 tabs
go
package logctx

import (
	"context"
	"log/slog"
)

Request-Scoped Structured Logging with slog and Context in Go

go logging slog
by codesnips 3 tabs
typescript
import { z } from 'zod';

export const signupSchema = z
  .object({
    email: z.string().min(1, 'Email is required').email('Enter a valid email'),
    username: z

Field-Level Signup Validation with Zod and a Typed useZodForm Hook

react zod forms
by codesnips 3 tabs
ruby
class DebouncedReindexJob
  include Sidekiq::Job

  sidekiq_options queue: :indexing, retry: 5

  DEBOUNCE_DELAY = 5 # seconds

Debouncing Sidekiq Jobs Per-Record With Redis So Rapid Updates Coalesce Into One Run

rails sidekiq redis
by codesnips 3 tabs
python
from django.db import models
from django.utils import timezone


class SoftDeleteQuerySet(models.QuerySet):
    def delete(self):

Soft-Delete in Django with a Custom Manager and QuerySet

django orm soft-delete
by codesnips 3 tabs
python
import time
import threading
from collections import deque, defaultdict


class SlidingWindowLimiter:

Sliding-Window Rate Limiting in Flask With a Custom Decorator and In-Memory Buckets

flask rate-limiting decorators
by codesnips 3 tabs
go
package fetch

import (
	"context"
	"net/http"

Bounded Fan-Out With Worker Pool, errgroup, and Result Collection in Go

go concurrency goroutines
by codesnips 3 tabs
javascript
const express = require('express');
const webhookRouter = require('./webhookRouter');
const apiRouter = require('./apiRouter');

const app = express();

Verify Stripe Webhook Signatures with a Raw-Body Express Route

express stripe webhooks
by codesnips 3 tabs
typescript
import { NestFactory } from '@nestjs/core';
import { ValidationPipe } from '@nestjs/common';
import { AppModule } from './app.module';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);

Global ValidationPipe with class-validator DTOs and Transform in NestJS

nestjs validation dto
by codesnips 3 tabs
php
<?php

namespace App\Console\Commands;

use App\Mail\DailySalesReport;
use App\Models\Order;

Nightly Sales Summary Report as a Scheduled Laravel Command with Mailable

laravel scheduling cron
by codesnips 4 tabs