Last Updated or created 2024-02-22
Some quotes I like to refer to:
https://www.henriaanstoot.nl/aboutme/
One of my websites was slow after the whole neighbourhood was without power for a few hours.
My lab using dual power, and a UPS went down for a few hours.
After that incident, one of my websites was slow, and it got worse with time.
But I never took the time to really look into this problem.
Until it was too much .. 8 seconds to TTFB
I’ve checked in the last month:
- Hypervisors
- Memory
- CPU load
- Docker instances
- Reverse proxy
- Bind DNS server
- Iscsi storage
- 10Gbps fibre connections
- Database server
- iotop latency
So, I was planning to rebuild my WordPress setup.
Meanwhile, let’s check some sites for information.
Then I came across WPCast on YouTube.
( How To Fix A Slow WordPress Site – WordPress Speed Optimization Tutorial )
Let’s watch this, while rebuilding my website.
All suggestions were in vain.
Until Query Monitor was mentioned.
I soon discovered that the resolving within my docker container was messed up!
2 http api call’s taking a long time.
Rebuild the docker container with my DNS nameserver and a second as fail back.
Fixed.
What did I learn, check all components!
Start close to the problem source.