Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 163 (from laksa002)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa163.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 = 13 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.musichouseschool.com/4-things-you-should-consider-before-learning-to-play-the-trumpet\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.musichouseschool.com/4-things-you-should-consider-before-learning-to-play-the-trumpet\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.musichouseschool.com\/4-things-you-should-consider-before-learning-to-play-the-trumpet","crawl_time":1779299063,"first_indexed_time":1649346127,"http_code":200,"src_unparsed":"com,musichouseschool!www,\/4-things-you-should-consider-before-learning-to-play-the-trumpet s443","src_root_hash":"13691642149528722763","history_drop_reason":null,"meta_title":"4 Things You Should Consider Before Learning to Play the Trumpet","meta_descriptions":["Before taking up the trumpet, there are a few things you should know about the instrument. Head over to our blog to learn more!"],"meta_canonical":null,"ml_categories_json":"","ml_types_json":"","ml_intent_types_json":"","meta_language":"en","attrs_author":"Autumn Huerter","attrs_publish_time":1777507200,"attrs_original_publish_time":1649346127,"attrs_is_republished":1,"attrs_nr_words":"1393","attrs_boilerpipe_nr_words":"1029","body_ext_links_number":5,"body_int_links_number":56,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":288,"download_ttfb_msec":288,"download_size":10314}

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.5 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://www.musichouseschool.com/4-things-you-should-consider-before-learning-to-play-the-trumpet
Last Crawled	2026-05-20 17:44:23 (13 days ago)
First Indexed	2022-04-07 15:42:07 (4 years ago)
HTTP Status Code	200
Content
Meta Title	4 Things You Should Consider Before Learning to Play the Trumpet
Meta Description	Before taking up the trumpet, there are a few things you should know about the instrument. Head over to our blog to learn more!
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	Autumn Huerter
Publish Time	2026-04-30 00:00:00 (1 month ago)
Original Publish Time	2022-04-07 15:42:07 (4 years ago)
Republished	Yes
Word Count (Total)	1,393
Word Count (Content)	1,029
Links
External Links	5
Internal Links	56
Technical SEO
Meta Nofollow	No
Meta Noarchive	No
JS Rendered	No
Redirect Target	null
Performance
Download Time (ms)	288
TTFB (ms)	288
Download Size (bytes)	10,314
Location
Host ID	163 (laksa163)
Partition ID	13
Root Hash	13691642149528722763
Unparsed URL	com,musichouseschool!www,/4-things-you-should-consider-before-learning-to-play-the-trumpet s443

🕷️ Crawler Inspector

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1. Shard Calculation

Query:

Response:

2. Crawled Status Check

Query:

Response:

3. Robots.txt Check

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Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

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