How to understand that there is a memory leak? What to do if the PM says the application is slow?

Memory leaks can be identified if an application gradually consumes more RAM without releasing it, leading to slowdowns or crashes. To detect leaks in Python, memory profilers such as tracemalloc or memory_profiler are used.

If the PM says the application is slowing down, you should:

1. Check system load and resource usage (CPU, memory).
2. Analyze logs and performance metrics.
3. Use profilers to find bottlenecks and memory leaks.
4. Optimize problematic code sections or architecture.

Example of using tracemalloc:

import tracemalloc

tracemalloc.start()

# application code

snapshot = tracemalloc.take_snapshot()
top_stats = snapshot.statistics('lineno')

for stat in top_stats[:10]:
    print(stat)