There is a moment in the life of every growing system when a single server quietly becomes a bottleneck.
At first, the system works exactly as expected. Users send requests, the server processes them, and responses are returned almost instantly. Everything feels smooth, predictable, and under control.
But as usage grows, something subtle begins to change.
Requests start arriving faster than they can be processed. The server becomes overloaded. Response times increase. Eventually, some requests begin to fail, not because the logic is incorrect, but because the system simply cannot keep up.
This is not a bug.
