What methods do you use to ensure high system performance under significant load?

To ensure high system performance under significant load, the following methods are used:

• Caching: reducing the number of requests to the database or external services.
• Asynchrony and multithreading: using queues, thread pools, non-blocking operations.
• Query and index optimization: proper database and query design.
• Load balancing: distributing requests across multiple servers.
• Using CDN and compression: to reduce resource loading times.
• Profiling and monitoring: identifying bottlenecks and eliminating them.
• Connection pool: for efficient database resource management.
• Algorithm and data structure optimization: reducing operation complexity.

Example: if an application experiences high read load, caching with Redis can be implemented to reduce database load and speed up response times.