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After I installed and set up redis I checked a page of my website using gtmetrix.com and the TTFB was reduced to almost half, I was really impressed. But if I test the same page again, it goes back to what it was before redis cache was setup. If I restart the services (redis-server phpfpm nginx) and then test the page immediately ,the ttf sometimes goes down again, until I retest and it goes up again.
The website I am testing on has little to no traffic so i am pretty sure that gtmetrix is the first one visiting the website after I restart the services.
The only things I have changed in config file of redis are:
maxmemory 256mb
maxmemory-policy allkeys-lru
and in wp-config.php
define( ‘WP_REDIS_DATABASE’, 1);
define(‘WP_CACHE_KEY_SALT’, ‘mywebsite.com’);
define(‘WP_CACHE’, true);
I don’t know why this is happening and would really appreciate some help.
Thanks