Function extract_endpoint_pattern 

pub fn extract_endpoint_pattern(url: &str) -> String

What: Extract endpoint pattern from URL for circuit breaker tracking.

Inputs:

• url: Full URL to extract pattern from

Output:

• Endpoint pattern string (e.g., “/feeds/news/”, “/packages/*/json/”)

Details:

• Normalizes URLs to endpoint patterns for grouping similar requests.
• Replaces specific package names with “*” for JSON endpoints.