Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 129 (from laksa008)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa129.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, meta_canonical AS meta_canonical, ml_categories_json AS ml_categories_json, ml_types_json AS ml_types_json, ml_intent_types_json AS ml_intent_types_json, meta_language AS meta_language, attrs_author AS attrs_author, ifNull(toUnixTimestamp(attrs_publish_time), 0) AS attrs_publish_time, ifNull(toUnixTimestamp(attrs_original_publish_time), 0) AS attrs_original_publish_time, ifNull(attrs_is_republished, 0) AS attrs_is_republished, ifNull(attrs_nr_words, 0) AS attrs_nr_words, ifNull(attrs_boilerpipe_nr_words, 0) AS attrs_boilerpipe_nr_words, ifNull(body_ext_links_number, 0) AS body_ext_links_number, ifNull(body_int_links_number, 0) AS body_int_links_number, ifNull(meta_nofollow, 0) AS meta_nofollow, ifNull(meta_noarchive, 0) AS meta_noarchive, ifNull(props_was_rendered, 0) AS props_was_rendered, ifNull(src_redirect, \'\') AS src_redirect, ifNull(download_time_msec, 0) AS download_time_msec, ifNull(download_ttfb_msec, 0) AS download_ttfb_msec, ifNull(download_size, 0) AS download_size FROM crawler3.page_info_local FINAL PREWHERE int_partition_id = 63 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://pmc.ncbi.nlm.nih.gov/articles/PMC356823/\')), getAhrefsUnparsedNoserviceFromURL(\'https://pmc.ncbi.nlm.nih.gov/articles/PMC356823/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC356823\/","crawl_time":1766760073,"first_indexed_time":0,"http_code":200,"src_unparsed":"gov,nih!nlm,ncbi,pmc,\/articles\/PMC356823\/ s443","src_root_hash":"7295144728021232729","history_drop_reason":null,"meta_title":"Antibiotic-Associated Diarrhea Accompanied by Large-Scale Alterations in the Composition of the Fecal Microbiota - PMC","meta_descriptions":["Alterations in the diversity of the gut microbiota are believed to underlie the development of antibiotic-associated diarrhea (AAD). A molecular phylogenetic analysis was performed to document temporal changes in the diversity of fecal bacteria of a ..."],"meta_canonical":null,"ml_categories_json":"","ml_types_json":"","ml_intent_types_json":"","meta_language":"en","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1741927185,"attrs_is_republished":0,"attrs_nr_words":"3942","attrs_boilerpipe_nr_words":"3416","body_ext_links_number":84,"body_int_links_number":59,"meta_nofollow":1,"meta_noarchive":1,"props_was_rendered":0,"src_redirect":"","download_time_msec":114,"download_ttfb_msec":112,"download_size":34434}

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	5.3 months ago
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	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Property	Value
URL	https://pmc.ncbi.nlm.nih.gov/articles/PMC356823/
Last Crawled	2025-12-26 14:41:13 (5 months ago)
First Indexed	not set
HTTP Status Code	200
Content
Meta Title	Antibiotic-Associated Diarrhea Accompanied by Large-Scale Alterations in the Composition of the Fecal Microbiota - PMC
Meta Description	Alterations in the diversity of the gut microbiota are believed to underlie the development of antibiotic-associated diarrhea (AAD). A molecular phylogenetic analysis was performed to document temporal changes in the diversity of fecal bacteria of a ...
Meta Canonical	null
Boilerpipe Text	heavy column, fetched on demand
Markdown	heavy column, fetched on demand
Readable Markdown	heavy column, fetched on demand
ML Classification
ML Categories	null
ML Page Types	null
ML Intent Types	null
Content Metadata
Language	en
Author	null
Publish Time	not set
Original Publish Time	2025-03-14 04:39:45 (1 year ago)
Republished	No
Word Count (Total)	3,942
Word Count (Content)	3,416
Links
External Links	84
Internal Links	59
Technical SEO
Meta Nofollow	Yes
Meta Noarchive	Yes
JS Rendered	No
Redirect Target	null
Performance
Download Time (ms)	114
TTFB (ms)	112
Download Size (bytes)	34,434
Location
Host ID	129 (laksa129)
Partition ID	63
Root Hash	7295144728021232729
Unparsed URL	gov,nih!nlm,ncbi,pmc,/articles/PMC356823/ s443

🕷️ Crawler Inspector

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1. Shard Calculation

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Response:

2. Crawled Status Check

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3. Robots.txt Check

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4. Spam/Ban Check

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Response:

5. Seen Status Check

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