Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 105 (from laksa105)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa105.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 = 9 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://velog.io/@devkelvin/Advanced-C-4\')), getAhrefsUnparsedNoserviceFromURL(\'https://velog.io/@devkelvin/Advanced-C-4\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/velog.io\/@devkelvin\/Advanced-C-4","crawl_time":1778564541,"first_indexed_time":1754498006,"http_code":200,"src_unparsed":"io,velog!\/@devkelvin\/Advanced-C-4 s443","src_root_hash":"10166624061664201905","history_drop_reason":null,"meta_title":"[Advanced C++] 4. 전방선언 , 식별자 선언&정의에 대해, C++컴파일방식, 명명충돌 & namespace, 전처리기 & 전처리지시문","meta_descriptions":["전방선언다음 코드는 컴파일에러를 발생시킨다 왜일까?이유는 컴파일러가 코드를 순차적으로 컴파일하기 때문이다, 따라서 main()에서 add()를 호출할 때 add의 선언이 보다 밑에 있기 때문에 add 식별자를 찾지 못하여 컴파일 에러가 발생한다이러한 에러를 해결하기 위"],"meta_canonical":null,"ml_categories_json":"","ml_types_json":"","ml_intent_types_json":"","meta_language":null,"attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1754498006,"attrs_is_republished":0,"attrs_nr_words":"1624","attrs_boilerpipe_nr_words":"1542","body_ext_links_number":0,"body_int_links_number":9,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":1078,"download_ttfb_msec":902,"download_size":33504}

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.7 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://velog.io/@devkelvin/Advanced-C-4
Last Crawled	2026-05-12 05:42:21 (22 days ago)
First Indexed	2025-08-06 16:33:26 (10 months ago)
HTTP Status Code	200
Content
Meta Title	[Advanced C++] 4. 전방선언 , 식별자 선언&정의에 대해, C++컴파일방식, 명명충돌 & namespace, 전처리기 & 전처리지시문
Meta Description	전방선언다음 코드는 컴파일에러를 발생시킨다 왜일까?이유는 컴파일러가 코드를 순차적으로 컴파일하기 때문이다, 따라서 main()에서 add()를 호출할 때 add의 선언이 보다 밑에 있기 때문에 add 식별자를 찾지 못하여 컴파일 에러가 발생한다이러한 에러를 해결하기 위
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	null
Author	null
Publish Time	not set
Original Publish Time	2025-08-06 16:33:26 (10 months ago)
Republished	No
Word Count (Total)	1,624
Word Count (Content)	1,542
Links
External Links	0
Internal Links	9
Technical SEO
Meta Nofollow	No
Meta Noarchive	No
JS Rendered	No
Redirect Target	null
Performance
Download Time (ms)	1,078
TTFB (ms)	902
Download Size (bytes)	33,504
Location
Host ID	105 (laksa105)
Partition ID	9
Root Hash	10166624061664201905
Unparsed URL	io,velog!/@devkelvin/Advanced-C-4 s443

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1. Shard Calculation

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2. Crawled Status Check

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3. Robots.txt Check

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4. Spam/Ban Check

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5. Seen Status Check

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