Deploy and Host WordPress with Redis on Railway

What is WordPress with Redis?
WordPress with Redis is a WordPress installation that uses Redis as an in-memory caching layer to store frequently accessed data. By integrating Redis with WordPress, you reduce database load, improve response times, and deliver a faster, more scalable site — especially under heavy traffic.

About Hosting WordPress with Redis

Hosting WordPress with Redis means combining a content management system (CMS) and a high-performance key-value store into one optimized stack. WordPress manages your website content, while Redis caches objects, queries, and sessions in memory.
On Railway, you can deploy both services in the same project and connect them through Railway’s internal networking. This eliminates complex network configurations and keeps latency low. The Redis Object Cache plugin for WordPress can then be configured using the WORDPRESS_CONFIG_EXTRA environment variable, removing the need to edit wp-config.php manually. With this setup, performance gains are immediate, and scaling is straightforward.

Common Use Cases

• Speeding up dynamic WordPress sites by reducing database queries
• Handling high traffic during product launches, events, or promotions
• Running multiple WordPress instances (multi-tenant architecture) with a shared Redis cache and database

Dependencies for WordPress with Redis Hosting

• WordPress Docker image (e.g., wordpress:php8.2-apache)
• Redis Docker image (e.g., redis:7-alpine)

Deployment Dependencies

• Redis Object Cache Plugin
• Railway account: https://railway.app

Implementation Details

Example WORDPRESS_CONFIG_EXTRA for connecting to Redis via Railway’s internal host:

define('DOMAIN_CURRENT_SITE', '${{RAILWAY_PUBLIC_DOMAIN}}');
define('WP_HOME', 'https://${{RAILWAY_PUBLIC_DOMAIN}}');
define('WP_SITEURL', 'https://${{RAILWAY_PUBLIC_DOMAIN}}');

define('WP_REDIS_HOST', '${{Redis.RAILWAY_PRIVATE_DOMAIN}}');
define('WP_REDIS_PORT', 6379);
define('WP_REDIS_PASSWORD', '${{Redis.REDIS_PASSWORD}}');
define('WP_REDIS_SCHEME', 'tcp');

Why Deploy WordPress with Redis on Railway?

Railway is a singular platform to deploy your infrastructure stack. Railway will host your infrastructure so you don't have to deal with configuration, while allowing you to vertically and horizontally scale it.

By deploying WordPress with Redis on Railway, you are one step closer to supporting a complete full-stack application with minimal burden. Host your servers, databases, AI agents, and more on Railway.