repeatedly…`
Wait, I made a typo in my thought process.
URL: `https://itfromzero.com/en/ubuntu-en/installing-postgresql-on-ubuntu-22-04-from-zero-to-production-deployment.html`
Anchor: `database`.
Final check on Para 4:
`…performance is limited…`
Correct.
Final check on Para 1:
`…dealing with a VPS that kept…`
Correct.
Final check on HTML structure:
Preserve all tags. Preserve all spaces.
Let’s go.
The “High Traffic” Nightmare and the Fear of Server Crashes
Imagine your website is running smoothly when suddenly it “drops dead.” The cause might be a viral post or an ongoing ad campaign driving traffic. I once stayed up all night dealing with a VPS that kept throwing 502 Bad Gateway errors. Even after upgrading RAM from 4GB to 16GB, the CPU still spiked to 100% uncontrollably.
The real problem isn’t a weak server. It’s how the system handles requests. For every visit, Nginx must call PHP-FPM, PHP queries MySQL, and then returns the result. This process repeats thousands of times, exhausting resources extremely fast.
Why Do High-Spec Servers Still Lag?
Most content on blogs or product pages rarely changes. Forcing the server to execute PHP code and query the database repeatedly for the same content is a massive waste.
The main culprits are I/O Wait and CPU Overload
