My eduma website is loading very slow (TTFB long)

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- June 25, 2019 at 11:19 PM #452661
  
  Teague Xiao
  Participant
  
  Hi Sir/madam,
  
  I have a website (https://iteablue.com) serving online courses and it’s been rather slow.
  I take 10 minutes for loading a course page or lesson page, my website has CDN and cache and as I troubleshoot its TTFB (Time to first byte) is quite long.
  
  I replicated the whole website and tried to disabled all the plugins, nothing was abnormal until I enabled the “Thim Core” plugin, I suppose something’s wrong with it.
  
  Can you help me to find the root cause? Thanks.
- June 25, 2019 at 11:30 PM #452667
  
  Teague Xiao
  Participant
  
  Correction: It’s actually caused by plugin “LearnPress”, do you have any idea?
- June 26, 2019 at 10:34 AM #452821
  
  Anonymous
  Inactive
  
  Dear Teague Xiao,
  
  Loading speed depends on some factors such as host, plugins or media… Here are some suggestions:
  
  – A strong host is important.
  
  – Always using the latest version of theme and required plugins.
  
  – Too many images is also a reason.
  
  – Install cache plugin: W3 Total Cache plugin and Autoptimize plugin.
  
  – You shouldn’t install too many separate plugins. Deactive the unneccessary plugins.
  
  – Besides, you should find a website optimization company. They will help you optimize site as well.
  
  Hope these thing are useful.
  
  Best regards,
  
  Huyen Anh
- June 26, 2019 at 12:16 PM #452884
  
  Teague Xiao
  Participant
  
  Hi,
  
  – A strong host is important.
  We are using AWS China region with multiple instances auto-scaled. CPU/RAM/other metrics keeps in a normal status.
  DB instance also have normal CPU/RAM utilization.
  
  – Always using the latest version of theme and required plugins.
  Already upgraded to latest version in my duplicated environment.
  
  – Too many images is also a reason.
  Images/js/css are already offloaded to CDN.
  
  – Install cache plugin: W3 Total Cache plugin and Autoptimize plugin.
  Already using cache plugin super fast cache
  
  – You shouldn’t install too many separate plugins. Deactive the unneccessary plugins.
  As I said, I deactived all plugins, and once I activate the plugin “Learnpress”, it becomes slow.
  
  – Besides, you should find a website optimization company. They will help you optimize site as well.
  Will see what I can do on this.
  
  All in all, it’s TTFB (Time to first byte), not the downloading part afterwards, meaning that the host received the user requests and start processing (PHP) and querying the DB and send user feedback, telling user what contents need to be downloaded.
  
  The slow performance is actually happened during the processing at the host and DB querying part, or anything else that the plugin is doing.
- June 26, 2019 at 1:28 PM #452902
  
  Anonymous
  Inactive
  
  Dear Teague Xiao,
  
  With this case, we need access to your wp-admin to check more carefully. Can you give me your site access info, using access information?
  
  Look forward to hearing from you.
  
  Best regards,
  
  Huyen Anh
- June 27, 2019 at 12:02 PM #453184
  
  Teague Xiao
  Participant
  
  This reply has been marked as private.
- June 28, 2019 at 4:52 PM #453357
  
  Teague Xiao
  Participant
  
  Please marked this as resolved. This is caused by slow db query respond time.
  
  I downgraded the php version from 7.3 to 7.2, also I use a Memcached cached for DB by using W3 Total Cache plugins.
  It’s now working much better.
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