English

Nederlands

English

Nederlands

Redis ​

Redis (Remote Dictionary Server) is a high-performance object cache that makes your website faster. Instead of reading data from disk like a standard database (e.g. MySQL), Redis stores frequently accessed data directly in the server's RAM — which is significantly faster.


Benefits ​

  • Faster load times — Redis remembers previous database queries, so your server has less work to do.
  • Handles high traffic — Acts as a buffer, letting your site serve more simultaneous visitors without crashing.
  • Better user experience — Features like shopping carts, user sessions, and live notifications run smoother and faster.

Enable Redis ​

  1. Log in to your OS Cloud panel.
  2. Scroll down to the Developer Tools section.
  3. Locate the Redis block.
  4. Toggle the slider to On.

Once enabled, Redis will start running automatically inside your PHP container.


image

Connect Redis to WordPress ​

  1. Log in to WordPress, go to Plugins, search for Redis Object Cache, and install it.

image
  1. In WordPress, go to Settings → Redis.
  2. Click Enable Object Cache.
  3. In your wp-config.php file, add the following. Replace my_unique_site_name with a custom name (or leave it as-is):
php
define( 'WP_REDIS_HOST', '127.0.0.1' );
define( 'WP_REDIS_PORT', 6379 );

// Optional: give this site a unique prefix if you run multiple sites
define( 'WP_CACHE_KEY_SALT', 'my_unique_site_name' );
After activating Redis, you may briefly see a 502: Bad Gateway error. This usually means the Redis configuration hasn't fully connected to the application server yet. Fix it by restarting your PHP container: go to Advanced → Developer Tools and click the first Restart button under PHP.

Tuning Redis ​

Once enabled, Redis runs with default settings. Fine-tuning the configuration keeps Redis fast while staying within your container's resource limits. The configuration below is a recommended best-practice setup, optimised for stability and performance in a containerised environment.

You can copy and paste this directly into your redis.conf file:

conf
bind 127.0.0.1
protected-mode yes

maxmemory 192mb
maxmemory-policy allkeys-lru

save ""
appendonly no

lazyfree-lazy-eviction yes
lazyfree-lazy-expire yes

tcp-keepalive 300
timeout 0
Only adjust these values if you know what you're doing. Incorrect settings may cause Redis to stop working or perform poorly.