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I have been using AppTelemetry plugin for rough numbers on each phase of request. This is much better for performance tuning.

Do you have any tips for optimizing PHP, where server response times are poor to begin with? I've been trying to optimize a blog as proof-of-concept[1] but it has plateaued at 1.5s load time.

[1] http://wpdemo.nestifyapp.com/

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You are probably not going to get decent response times with PHP, especially if you're using a framework. If you've already taken care of the basics (opcache, PHP7 or HHVM, WP-specific caching plugins, etc) you would have to settle for techniques such as nginx microcaching [1], which can drop your responses to around 10ms.

[1]: https://thelastcicada.com/microcaching-with-nginx-for-wordpr...

Wow. Microcaching reduced response time from 25 ms to 3 ms. Thanks!

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