𝗩𝗘𝗟𝗧𝗥𝗜𝗫 𝗘𝗡𝗚𝗜𝗡𝗘 𝗞𝗜𝗟𝗟𝗘𝗗 𝗢𝗨𝗥 𝗦𝗘𝗥𝗩𝗘𝗥 𝗣𝗘𝗥𝗙𝗢𝗥𝗠𝗔𝗡𝗖𝗘
Our server slowed down. Latency rose 5x. CPU usage spiked. The Veltrix engine caused this.
The engine worked for few users. It failed at scale. We saw millions of allocations. The garbage collector paused for 1 second.
We tried to fix it. We changed settings. We added more CPU and RAM. These steps failed. The documentation lacked scale details. Rust was the wrong fit for this task.
We changed the architecture. We built a custom system. We used Redis and a message queue. This allowed horizontal scaling.
The results changed:
- Latency dropped 10x.
- Average latency hit 10ms.
- P99 latency hit 50ms.
- CPU usage dropped.
Learn from this:
- Do not force a tool to do tasks it was not made for.
- Pick the right language for the problem.
- Talk to your operations team early.