codesnips

codesnips

852 code snips · on codesnips 3 months
java 
package com.example.security.metrics;

import io.micrometer.core.instrument.Counter;
import io.micrometer.core.instrument.MeterRegistry;
import org.springframework.stereotype.Service;

Track Failed Login Attempts with a Custom Micrometer Counter in Spring Boot

spring-boot micrometer metrics
by codesnips 3 tabs
ruby 
class DiscountCode < ApplicationRecord
  has_many :redemptions, dependent: :destroy

  enum discount_type: { percentage: 0, fixed: 1 }

  validates :code, presence: true, uniqueness: { case_sensitive: false }

Redeem Discount Codes in Rails with a Locking Service and Row-Level Guards

rails activerecord discounts
by codesnips 4 tabs
go 
package webhooksign

import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/hex"

Sign Outgoing Webhook Requests With an HMAC-SHA256 Signature and Timestamp

hmac webhooks security
by codesnips 3 tabs
python 
from rest_framework.versioning import BaseVersioning
from rest_framework.exceptions import NotAcceptable


class AcceptHeaderVersioning(BaseVersioning):
    default_version = "1"

Versioning a DRF Resource With Accept-Header Content Negotiation

django drf rest-api
by codesnips 4 tabs
javascript 
class DeadlineError extends Error {
  constructor(message = 'request deadline exceeded') {
    super(message);
    this.name = 'DeadlineError';
    this.code = 'DEADLINE_EXCEEDED';
  }

Enforce Per-Request Timeouts by Aborting Downstream Fetches with AbortSignal

node fetch abortcontroller
by codesnips 3 tabs
ruby 
class LoginCode < ApplicationRecord
  belongs_to :user

  CODE_LENGTH = 6
  TTL = 10.minutes

One-Time Password Login: Expiring Token Model, Mailer, and Verification in Rails

rails authentication otp
by codesnips 3 tabs
python 
import logging
import re

_BASE_FIELDS = set(logging.makeLogRecord({}).__dict__.keys())

_PATTERNS = [

Redacting Sensitive Fields in Structured Python Logs with a logging.Filter

logging security redaction
by codesnips 3 tabs
java 
package com.shop.shipping;

import java.math.BigDecimal;

public interface ShippingCostCalculator {

Runtime Strategy Selection for Shipping-Cost Calculators via a Factory

strategy-pattern factory-pattern design-patterns
by codesnips 4 tabs
javascript 
'use strict';

function dedupeAsync(producer, keyFn) {
  const pending = new Map();
  const resolveKey = keyFn || ((...args) => JSON.stringify(args));

Deduplicate Concurrent Async Calls With a Promise Cache in Node.js

nodejs async promises
by codesnips 3 tabs
php 
<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

Idempotent Stripe Webhook Processing With a Processed-Events Table in Laravel

laravel webhooks idempotency
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
python 
import datetime
import jwt
from flask import current_app


class TokenError(Exception):

Token-Based Auth Decorator That Loads current_user Into Flask's g

flask authentication decorators
by codesnips 3 tabs