codesnips
ruby 
require 'sinatra/base'
require 'json'
require_relative 'signature_verifier'

class WebhookApp < Sinatra::Base
  configure do

Verifying Stripe Webhook Signatures in Sinatra with a before Filter

sinatra webhooks stripe
by codesnips 2 tabs
go 
package workpool

import (
	"context"
	"sync"
)

Bounded Worker Pool Processing Jobs from a Buffered Channel in Go

go concurrency worker-pool
by codesnips 3 tabs
php 
<?php

namespace App\Services;

use App\Models\Order;
use Illuminate\Support\Facades\Cache;

Cache Expensive Dashboard Aggregates and Bust Them on Write in Laravel

laravel caching redis
by codesnips 4 tabs
python 
from sqlalchemy import Column, Integer, BigInteger, String
from sqlalchemy.orm import declarative_base

Base = declarative_base()

Optimistic Locking With a Version Column and Bounded Retries in SQLAlchemy

sqlalchemy postgres optimistic-locking
by codesnips 3 tabs
typescript 
import { Controller, Sse, Headers } from '@nestjs/common';
import { interval, Observable } from 'rxjs';
import { map } from 'rxjs/operators';

interface FeedPayload {
  id: number;

Streaming Server-Sent Events into a Live React List with an EventSource Hook

react sse eventsource
by codesnips 3 tabs
javascript 
const CACHE_NAME = 'swr-api-v1';
const STAMP_HEADER = 'x-cached-at';

async function open() {
  return caches.open(CACHE_NAME);
}

Stale-While-Revalidate Fetch Wrapper Using the Browser Cache API

cache-api stale-while-revalidate fetch
by codesnips 3 tabs
javascript 
const crypto = require('crypto');

function computeSignature(secret, timestamp, payload) {
  return crypto
    .createHmac('sha256', secret)
    .update(`${timestamp}.${payload}`, 'utf8')

Verify Stripe-Style Webhook Signatures With HMAC in Express Before Processing

webhooks hmac security
by codesnips 2 tabs
typescript 
export interface UploadHandle {
  promise: Promise<{ status: number; body: string }>;
  xhr: XMLHttpRequest;
}

export function uploadFile(

React File Upload with Live Progress Bar Using XMLHttpRequest

react file-upload xmlhttprequest
by codesnips 3 tabs
typescript 
export interface Post {
  id: string;
  title: string;
  updatedAt: string;
}

Deduplicating Paginated API Results With a Normalized Entity Store and Reducer

react reducer normalization
by codesnips 3 tabs
php 
<?php

namespace App\ValueObjects;

final readonly class NotificationSettings
{

Cast a JSON Column to an Immutable Value Object with a Custom Eloquent Cast in Laravel

laravel eloquent value-object
by codesnips 3 tabs
java 
@MappedSuperclass
@FilterDef(
    name = "tenantFilter",
    parameters = @ParamDef(name = "tenantId", type = String.class)
)
@Filter(name = "tenantFilter", condition = "tenant_id = :tenantId")

Enforce Multi-Tenant Row Isolation With Hibernate @Filter Enabled Per Request in Spring Boot

spring-boot hibernate jpa
by codesnips 4 tabs
java 
@Component
public class SalesRollupScheduler {

    private static final Logger log = LoggerFactory.getLogger(SalesRollupScheduler.class);
    private static final int ROLLUP_WINDOW_DAYS = 3;

Roll Up Daily Sales Totals With a Scheduled Spring Batch Upsert via JdbcTemplate

spring-boot jdbctemplate postgres
by codesnips 3 tabs