codesnips

reliability

ruby 
class LeaderboardCache
  TOP_KEY = "leaderboard:top".freeze
  STATS_KEY = "leaderboard:stats".freeze

  def top_players
    Rails.cache.fetch(TOP_KEY, expires_in: 5.minutes, race_condition_ttl: 15.seconds) do

Cache Stampede Protection with race_condition_ttl

rails caching performance
by codesnips 3 tabs
ruby 
class CreateWebhookEvents < ActiveRecord::Migration[7.1]
  def change
    create_table :webhook_events do |t|
      t.string :event_id, null: false
      t.string :source, null: false, default: "stripe"
      t.string :event_type, null: false

Idempotent Stripe Webhook Processing with a Unique Event Key in Rails

rails postgres webhooks
by codesnips 4 tabs
ruby 
class CreateOutboxEvents < ActiveRecord::Migration[7.1]
  def change
    create_table :outbox_events do |t|
      t.string :event_type, null: false
      t.string :aggregate_type, null: false
      t.string :aggregate_id, null: false

Transactional Outbox for Reliable Event Publishing

rails background-jobs reliability
by codesnips 4 tabs
rust 
use serde::Deserialize;
use std::fmt;

#[derive(Debug, Deserialize)]
pub struct UserRecord {
    pub name: String,

Row-by-Row CSV Import Validation With Line-Numbered Errors in Rust

csv serde validation
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
rust 
use std::fs;
use std::path::Path;

#[derive(Debug, Clone)]
pub struct Migration {
    pub version: i64,

Sequential Schema Migrations With Version Tracking in Rust and Postgres

migrations postgres sql
by codesnips 3 tabs
java 
package com.example.health;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.DataSource;

Custom Spring Boot Actuator Health Indicators for Database and Disk

spring-boot actuator health-check
by codesnips 3 tabs
go 
package httpretry

import (
	"math/rand"
	"time"
)

Exponential Backoff With Full Jitter for Flaky HTTP Calls in Go

go http retry
by codesnips 3 tabs
go 
package retry

import (
  "context"
  "math/rand"
  "time"

Exponential backoff with jitter for retries

go reliability retry
by Leah Thompson 1 tab
ruby 
class DeliveryObserver
  def self.delivered_email(message)
    new(message).record
  end

  def initialize(message)

Action Mailer Delivery Observability Hook

rails observability action-mailer
by codesnips 3 tabs
go 
package config

import (
  "io"

  "gopkg.in/yaml.v3"

Safe YAML decoding (KnownFields) for config files

go config yaml
by Leah Thompson 1 tab
java 
package com.example.orders.event;

import java.math.BigDecimal;
import java.time.Instant;

public final class OrderPlacedEvent {

Publishing Domain Events After Commit with @TransactionalEventListener in Spring Boot

spring-boot spring-events transactions
by codesnips 4 tabs