What makes a system high-load? Based on your expertise.

A system becomes high-load when it processes a very large volume of requests, data, or operations with minimal delays and high availability. The main factors that make a system high-load include:

• A large number of concurrent users or requests. For example, millions of users on a social network.
• High intensity of data operations. Frequent reads/writes, complex calculations.
• Requirements for low latency and high availability. The system must respond quickly and not fail.
• Scalability and fault tolerance. Ability to scale horizontally and recover from failures.

From experience in Go: for high-load systems, it is important to efficiently use goroutines and channels, minimize blocking, optimize network and database operations, apply caching, and load balancing.

Example: a web server in Go that handles thousands of requests per second, uses a goroutine pool, Redis cache, and a load balancer for traffic distribution.