Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 51 (from laksa030)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa051.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.youtube.com/user/youtube\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.youtube.com/user/youtube\'))) FORMAT JSONEachRow'

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	3.5 months ago (distributed domain, exempt)
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	FAIL	`meta_canonical IS NULL OR = '' OR = src_unparsed`	com,youtube!www,/channel/UCBR8-60-B28hp2BmDPdntcQ s443

Property	Value
URL	https://www.youtube.com/user/youtube
Last Crawled	2025-12-21 19:39:32 (3 months ago)
First Indexed	not set
HTTP Status Code	200
Meta Title	YouTube - YouTube
Meta Description	like & subscribe
Meta Canonical	com,youtube!www,/channel/UCBR8-60-B28hp2BmDPdntcQ s443
Boilerpipe Text	null
Markdown	null
Readable Markdown	null
Shard	51 (laksa)
Root Hash	3907445400264388851
Unparsed URL	com,youtube!www,/user/youtube s443

🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

1. Shard Calculation

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Response:

2. Crawled Status Check

Query:

Response:

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

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