crajeshkumar

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  • Thread Starter crajeshkumar

    (@crajeshkumar)

    Hi @vmarko,

    You can see “empty all caches & empty only the memcached cache(s)” in the W3TC Dashboard screen. Also there are two other places, Performance -> Purge all caches & Performance -> Database Cache -> Empty Cache. I am clearing cache in all the above mentioned places. But the database cache (memcache) was still there in our memcached DB server. It is not getting cleared.

    It is getting cleared only if the key has expired.

    Please advise.

    Thread Starter crajeshkumar

    (@crajeshkumar)

    Hi Marko,

    Thanks for your prompt response. We don’t have much plugins installed in our website. However i would like to add some configuration details about our website which may give you a clear picture about our website architecture.

    It’s a WordPress multi-site architecture with Nginx. It is hosted in AWS with auto scaling feature, so running in multiple instances pointed through load balancer. We have CDN & network enabled W3TC.

    And we are getting this “Out of memory” issue continued with “Cannot use output buffering” issue in W3TC from our instance logs.

    PHP Fatal error: Out of memory (allocated 4194304) (tried to allocate 65536 bytes) in ../plugins/w3-total-cache/w3-total-cache-api.php on line 179 while reading response header from upstream

    PHP Fatal error: Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line 0 while reading upstream

    Based on the above details, could you analyze more & provide some suggestions to solve the issue?

    Thanks
    Rajesh

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