๐ ๐ ๐๐ฎ๐๐ฎ ๐ง๐ผ ๐ฅ๐๐๐ ๐ ๐ถ๐ด๐ฟ๐ฎ๐๐ถ๐ผ๐ป
I built a treasure hunt engine for an online game. It needed to handle thousands of users at once.
I started with Java and MySQL. It felt safe. Then we tested it under load. Everything slowed down. Garbage collection pauses ruined the experience.
I tried to fix it. I optimized the code. I tuned the JVM. I increased the heap size. Nothing worked. The system created 100,000 objects per second.
We made a big move. We rewrote the engine in Rust. My team did not know Rust. We spent weeks learning the language. We used actix-web and Redis.
The results changed everything:
- Heap allocation dropped by 90%.
- GC pauses disappeared.
- Latency fell from 500ms to 50ms.
- The system handled 10,000 users with ease.
I learned a hard lesson. Pick your tools carefully at the start. Analyze your performance early. Change your architecture when it fails.