Excessive disk write with fallback cache enabled

  • Resolved peteyio

    (@peteyio)


    2 years, 9 months ago

    Firstly, amazing plugin – it works flawlessly and does exactly what it says.

    I currently deploy this on a client site who runs a large news website. They have around 50,000 articles and generate a decent amount of traffic. We implemented the Cloudflare Workers setup and all is well there.

    Yesterday, I decided to enable fallback cache and disable WP Rocket entirely, in favor of using Perfmatters for achieving the performance elements of WP Rocket. Essentially the setup is;

    Super Page Cache > Cloudflare Workers + Fallback Cache enabled
    Perfmatters

    The fallback cache has generated around 30GB of fallback cache files, which is expected, and growing further (also fine). What isn’t so good, is the excessive disk writes being performed ever since enabling fallback cache. In a 12 hour period, I have logged 2TB (yes, terabyte) of disk writes to storage. If I disable fallback cache, this immediately stops.

    Is there any reason as to why this might be happening?

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