codesnips
ruby 
module Result
  def self.Success(value)
    Success.new(value)
  end

  def self.Failure(error)

Railway-Oriented Result Monad for Chaining Lead Enrichment Steps in Ruby

result-monad railway-oriented functional
by codesnips 3 tabs
php 
<?php

namespace App\Message;

final class PurgeExpiredTokensMessage
{

Recurring Cleanup Task with Symfony Scheduler and Messenger Handler

symfony scheduler messenger
by codesnips 4 tabs
rust 
use anyhow::{anyhow, Result};
use chrono::{DateTime, Utc};
use cron::Schedule as CronSchedule;
use std::str::FromStr;

pub struct Schedule {

Parse Cron Expressions and Run Due Recurring Jobs in Rust with Tokio

rust tokio cron
by codesnips 3 tabs
php 
<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

Serve Purchased Downloads Behind Signed Temporary URLs in Laravel

laravel eloquent signed-urls
by codesnips 4 tabs
python 
from django.db import models
from django.db.models import Avg, Count, Sum, DecimalField
from django.db.models.functions import Coalesce, TruncDate
from django.utils import timezone

Daily Order Stats Rollup with Django TruncDate Aggregation and a JSON API View

django orm aggregation
by codesnips 3 tabs
php 
<?php

namespace App\Console\Commands;

use App\Jobs\CompileReportJob;
use Carbon\CarbonImmutable;

Schedule a Recurring Report Job in Laravel's Console Kernel

laravel scheduler cron
by codesnips 3 tabs
typescript 
import { startOfDay, isToday, isYesterday, format } from 'date-fns';

export interface ChatMessage {
  id: string;
  senderId: string;
  senderName: string;

Group Chat Messages by Day with a Memoized Selector in React

react typescript selectors
by codesnips 3 tabs
ruby 
class CreateAccountsAndLedger < ActiveRecord::Migration[7.1]
  def change
    create_table :accounts do |t|
      t.string :name, null: false
      t.string :currency, null: false, default: "USD"
      t.bigint :balance_cents, null: false, default: 0

Atomic Account Transfers in Rails With Row Locks and a Balance Service

rails postgres transactions
by codesnips 4 tabs
rust 
use std::fmt;

#[derive(Debug)]
pub enum HashError {
    Backend(String),
    InvalidHash,

Pluggable Password Hasher Trait in Rust with Argon2 and Bcrypt Backends

rust argon2 bcrypt
by codesnips 3 tabs
ruby 
class TypingPresence
  EXPIRE_AFTER = 6 # seconds

  def initialize(room, redis: Redis.current)
    @room = room
    @redis = redis

Broadcast Typing Indicators in Rails Chat with ActionCable and a Redis Presence Tracker

rails actioncable websockets
by codesnips 3 tabs
go 
package worker

import "context"

func (p *Pool) Submit(job Job) error {
	// Reject fast if draining, otherwise enqueue with backpressure.

Graceful Drain of In-Flight Jobs Before Worker Shutdown in Go

go graceful-shutdown concurrency
by codesnips 3 tabs
ruby 
class CreateIdempotencyKeys < ActiveRecord::Migration[7.1]
  def change
    create_table :idempotency_keys do |t|
      t.string :key, null: false
      t.string :request_path, null: false
      t.datetime :locked_at

Idempotent Form Submissions in Rails with an Idempotency-Key Column and before_action Guard

rails idempotency postgres
by codesnips 4 tabs