codesnips

health-checks

javascript 
// Express app with health checks and graceful shutdown
const express = require('express');
const { createServer } = require('http');

const app = express();
const server = createServer(app);

Container health checks and graceful shutdown patterns

docker kubernetes health-checks
by Ryan Nakamura 1 tab
typescript 
export type CheckResult = { name: string; status: 'up' | 'down'; durationMs: number; error?: string };
export type Check = () => Promise<void>;

function withTimeout(fn: Check, ms: number): Promise<void> {
  return new Promise((resolve, reject) => {
    const timer = setTimeout(() => reject(new Error(`timeout after ${ms}ms`)), ms);

Health checks with readiness + liveness

reliability fastify kubernetes
by codesnips 3 tabs
blade 
{{-- resources/views/errors/503.blade.php --}}
<!DOCTYPE html>
<html>
<head>
    <title>Maintenance Mode</title>
    <style>

Laravel maintenance mode and health checks

laravel maintenance health-checks
by Carlos Mendez 3 tabs
typescript 
import { Injectable } from '@nestjs/common';
import { HealthIndicator, HealthIndicatorResult, HealthCheckError } from '@nestjs/terminus';
import { PrismaService } from '../prisma/prisma.service';

@Injectable()
export class PrismaHealthIndicator extends HealthIndicator {

NestJS Health Checks With Terminus and a Custom Prisma Indicator

nestjs terminus health-checks
by codesnips 3 tabs