PHP Swoole CRUD Microservice

A high-performance PHP CRUD microservice built with Swoole, featuring MySQL, Redis, Prometheus, Grafana, Caddy, and Swagger UI integration. Designed for scalable, observable, and containerized deployments.

By 🐼 Ramakant Gangwar

⚙️ Swagger / OpenAPI

⚡️ Performance

❤️ Health

📊 Grafana Dashboards

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🚀 Features

• ⚡️ Fast HTTP server powered by Swoole
• 🗄️ MySQL database with connection pooling
• 🔁 Redis caching and pooling
• 📈 Prometheus metrics endpoint
• 📊 Grafana dashboards for monitoring
• 🔐 Caddy for HTTPS and reverse proxy
• 📘 Swagger UI for API documentation
• ❤️ Health checks for all services

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🏁 Getting Started

🧰 Prerequisites

Docker & Docker Compose

🐳 Docker Hub Quick Start

If you prefer using the pre-built Docker image, follow these steps:

# 1️⃣ Prepare environment file
# Copy the example .env file (you can modify it to match your setup)
cp .env.example .env

# Example .env values
APP_ENV=production
APP_DEBUG=false

DB_HOST=mysql
DB_PORT=3306
DB_USER=root
DB_PASS=secret
DB_NAME=app_db

REDIS_HOST=redis
REDIS_PORT=6379

PROMETHEUS_PORT=9502
SWOOLE_HTTP_PORT=9501

Now run the container:

# 🐙 Pull the latest image
docker pull rxcod9/php-swoole-crud-microservice:v1.0.24

# 🚀 Run the container with .env file
docker run --env-file .env -d -p 9501:9501 --name php-crud-microservice rxcod9/php-swoole-crud-microservice

# 🧩 Run database migrations inside the running container
docker exec -it php-crud-microservice php scripts/migrate.php

🧩 Docker Compose Usage

This repository includes a docker-compose.yml to run the full stack:

# ▶️ Start all services (PHP app, MySQL, Redis, Prometheus, Grafana, Caddy)
docker compose up -d --build

# ⏹️ Stop all services
docker compose down

# 📜 View logs
docker compose logs -f

Edit .env or docker-compose.override.yml to customize ports and database credentials.

⚡️ Quick Start

# 📋 Copy example environment
cp .env.example .env

# 📦 Install PHP dependencies
composer install

# 🚀 Start all services in detached mode
docker compose up -d --build

🗄️ Database Migration

# 🧭 Run migrations inside the app container
docker compose exec app php scripts/migrate.php

📘 API Documentation

# 🧩 Generate OpenAPI spec
php bin/generate-swagger.php

Access Swagger UI at http://localhost:8080

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🧠 Example API Usage

# ➕ Create a user
curl -s -X POST http://localhost:9501/users     -H 'Content-Type: application/json'     -d '{"name":"alice","email":"alice@example.com"}'

# 📚 Get all users
curl -s -X GET http://localhost:9501/users -H 'Content-Type: application/json' | jq

# 🔍 Get a user by ID
curl -s -X GET http://localhost:9501/users/1 -H 'Content-Type: application/json' | jq

# 🔎 Get a user by email
curl -s -X GET http://localhost:9501/users/email/alice%40example.com -H 'Content-Type: application/json' | jq

# ✏️ Update a user
curl -i -X PUT http://localhost:9501/users/1     -H 'Content-Type: application/json'     -d '{"name":"alice-updated","email":"alice-updated@example.com"}'

# ❌ Delete a user
curl -i -X DELETE http://localhost:9501/users/1 -H 'Content-Type: application/json'

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⚙️ Benchmarking

# 🧪 Using k6
k6 run --http-debug="full" k6 run k6/tests/crud_load_test.js > logs/k6.log 2>&1

# k6 command with all possible ENV variables
k6 run \
    -e BASE_URL=http://localhost:9501 \
    -e ENTITIES=users,items \
    -e CRUD=list,read,create,update \
    -e TOTAL_ENTITIES=200 \
    -e HOT_PERCENT=0.1 \
    -e COOL_PERCENT=0.1 \
    -e TOTAL_EXECUTIONS=2000 \
    -e MAX_VUS=50 \
    -e MAX_DURATION=10m \
    --http-debug="full" \
    tests/crud_main_test.js > logs/k6.log 2>&1

# 🧩 Using ApacheBench
ab -n 100000 -c 100 -v 4 http://localhost:9501/users/1 2>&1 | tee ab.log

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📡 Monitoring

• 📈 Prometheus scrapes metrics from the app, MySQL exporter and Redis Exporter.
• 📊 Grafana visualizes metrics (default port: 3000).

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⚙️ Environment Variables

All configurable options are defined in docker-compose.yml and .env.example.

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🧾 License

MIT