Redis Cache

In-memory key-value store for caching, sessions, and real-time applications using Redis Alpine.

Docker Configuration

Image: redis:alpine
Ports: 6379:6379
Volume: damp-redis:/data

Port Configuration

Default ports: 6379 (host) → 6379 (container)

If port 6379 is occupied on the host machine, DAMP automatically uses the next available port. Check the DAMP interface to see the actual port assigned.

Authentication

No authentication is configured for development environments.

Connection Information

From Host Machine (Windows)

Connect from your Windows host to the Redis service.

redis-cli -h localhost -p 6379

# Test connection
redis-cli -h localhost -p 6379 ping
# Returns: PONG

Connection Details:

• Host: localhost
• Port: 6379 (or actual port shown in DAMP)
• Password: None

Connection String:

redis://localhost:6379

From Project Containers

Connect from your DevContainers or other Docker containers to the Redis service.

Use the container name or ID shown in the DAMP interface.

# Using container name from DAMP
redis-cli -h [container-name]

# Test connection
redis-cli -h [container-name] ping
# Returns: PONG

Laravel .env Configuration:

REDIS_HOST=[container-name]
REDIS_PORT=6379
REDIS_PASSWORD=null

Replace [container-name] with the actual container name displayed in DAMP.

Common Operations

Set and Get Values

redis-cli -h localhost

SET user:1:name "John Doe"
GET user:1:name

# With expiration (10 seconds)
SETEX session:abc123 10 "user_data"

Laravel Cache Example

// Store cache for 1 hour
Cache::put('users', $users, 3600);

// Retrieve cached data
$users = Cache::get('users');

Session Storage

// In config/session.php
'driver' => 'redis',
'connection' => 'default',

Common Use Cases

• Caching frequently accessed data
• Fast session storage
• Real-time analytics counters
• Pub/Sub real-time messaging
• API rate limiting

Data Persistence

Data is periodically saved to the damp-redis volume for durability.