Increased server load/TTFB on WPEngine

  • Resolved jr

    (@johnmroberts)


    8 years, 7 months ago

    Hi Frank,

    We’re using the settings that are recommended in your previous posts for woocommerce, but we see quite a significant TTFB c.4 seconds on our site. The host is WPEngine and they tell us that this is due to the autoptimize plugin. Whilst the site loads quicker overall with automptimize activated, the TTFB is too high. Do you have any recommendations for this specific environment?

    Thanks,
    John

    https://www.ads-software.com/plugins/autoptimize/

Viewing 2 replies - 1 through 2 (of 2 total)
  • Plugin Author Frank Goossens

    (@futtta)

    afraid this is not AO’s doing John; typically as soon as a page is cached (by WPEngine’s varnish implementation), Autopitmize isn’t called upon, as the autoptimized files referenced in the HTML are cached and served as static content.

    I did a quick webpagetest.org test with and without AO and your TTFB is actually way to long in both situations:

    with AO; TTFB 4.926s, doc complete 7.580s, fully loaded 9.303s, 25 requests
    without AO; TTFB 4.499s, doc complete 7.594s, fully loaded 12.713s, 56 requests

    Some interesting HTTP response headers (following a request for the homepage) for you (and wpengine) to study;

    Server:”cloudflare-nginx”
    X-Cache:”MISS”
    x-cacheable:”NO:Passed”
    x-pass-why:”logged-in”

    I think the second one is from WPE and the others are from Cloudflare.

    So my hunch; there’s an issue with the page cache setup, the fact that you’re on wpengine (which has page caching) and cloudflare (which has caching as well) might be complicating things.

    Hope this helps,
    frank

    Thread Starter jr

    (@johnmroberts)

    Hi Frank,

    Thank you. That’s very useful.

    I’ll let you know if CF/WPEngine have any further thoughts on this.

    John

Viewing 2 replies - 1 through 2 (of 2 total)
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