How to Configure Redis Cache in Shopware 6?

Redis Cache is a powerful tool for enhancing your Shopware 6 store’s performance. 

With it, you can:

• Speed up page loading times by as much as 40%.
• Minimize server load, ensuring smoother operation.

When properly configured, Redis Cache creates a faster, more responsive shopping experience for your customers. Let’s dive into the steps to set it up effectively.

Prerequisites to Configure Redis Cache / What You’ll Need Before Starting

Make sure these, before you start:

• Shopware 6 is installed on your server.
• You have SSH access with root or sudo privileges.
• Redis is installed with your server or available for installation.
• Basic understanding of caching systems.

Benefits of Using Redis Cache in Shopware 6 / Why Use Redis Cache in Shopware 6?

• Reduced database queries: Redis caches frequent queries, lowering the load on your database.
• Faster page loading: Serve cached responses to improve user experience.
• Improved backend performance: Optimize admin operations and workflows.

Efficient resource usage: This includes freeing up server resources for important tasks.

Step-by-Step Configuration Guide

Step 1: Check Redis Installation

Verify if Redis is installed and running:

Step 2: Locate or Create the Redis Configuration File

Find your Shopware 6 installation directory and open the configuration file there:

If the file doesn’t exist, create it.

Step 3: Add Redis Configuration

Add the following lines to configure Redis Cache:

If Redis requires authentication, update the default_redis_provider to include your password:

default_redis_provider: ‘redis://:your_secure_password@localhost:6379’ 

Step 4: Secure Your Redis Configuration (Optional but Recommended)

For added security, set a password for Redis:

Access Redis CLI  

redis-cli  

Set a secure password  

CONFIG SET requirepass “your_secure_password” 

Update your connection string as shown above to reflect the password change.

Step 5: Clear Shopware Cache and Verify Redis Configuration

Once Redis is configured, clear the Shopware cache:

Clear Shopware cache  

bin/console cache:clear  

Verify Redis connectivity  

bin/console cache:pool:prune 

Step 6-Check Redis Configuration

Verify that Redis Cache is set up by either checking the system status or Shopware backend settings. 

It should be noted that Redis is the caching system.

Troubleshooting Common Issues

1. Redis Connection Refused

• Ensure Redis is running: systemctl status redis
• Verify the port (default: 6379) is open and accessible.
• Check firewall or network restrictions.

2. Authentication Failure

• Confirm your Redis password matches the configuration file.
• Ensure no typos in the default_redis_provider string.

3. High Memory Usage

Configure Redis memory limits by editing the redis.conf file:

 maxmemory 256mb  

maxmemory-policy allkeys-lru 

Best Practices

Performance Optimization

• Set a default lifetime for cached items.
• Enable Redis compression for large datasets.
• Regularly monitor Redis metrics like hit ratio and memory usage.

Security Recommendations

• Change Redis’s default port for added security.
• Restrict access to trusted IPs only.
• Keep Redis updated with the latest security patches.

Why Use Redis Cache for Shopware 6?

Redis significantly upgrades your store’s speed and responsiveness, making it essential for any high-performing Shopware 6 installation. Our Shopware developers are ready to assist you in improving website performance.