robots.txt is a domain-level document and does not vary by session.
Keying the cache by (domain, sid) was both wasteful and incorrect —
it caused redundant fetches when the same domain was accessed by different sessions.
- Cache is now keyed by domain string only; all sessions share one entry
- Removed asyncio.Event inflight-deduplication mechanism (superseded by the prefetch approach added in the next commit)
- clear_cache() loses the `sid` parameter (breaking change); clearing a domain now evicts the single shared entry for all sessions
- Updated tests to reflect shared-cache semantics
Files: scrapling/spiders/robotstxt.py, tests/spiders/test_robotstxt.py
protego is only used by the spider framework for robots.txt compliance.
Moving it from core dependencies to the optional 'fetchers' group reduces
the dependency footprint for users who don't need the spider framework.
for pyproject.toml file
Close pages immediately after tasks finish to reduce resource usage and
improve overall performance. Update corresponding test files to reflect
the new page lifecycle management.
Abdullah