Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 131 (from laksa022)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa131.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 = 85 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://f-lab.kr/insight/understanding-cpp-compilation-process\')), getAhrefsUnparsedNoserviceFromURL(\'https://f-lab.kr/insight/understanding-cpp-compilation-process\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/f-lab.kr\/insight\/understanding-cpp-compilation-process","crawl_time":1779191296,"first_indexed_time":1769914245,"http_code":200,"src_unparsed":"kr,f-lab!\/insight\/understanding-cpp-compilation-process s443","src_root_hash":"5253659817886637131","history_drop_reason":null,"meta_title":"C++ 컴파일 과정 이해하기","meta_descriptions":["C++ 프로그램의 컴파일 과정을 이해하고, 전처리, 컴파일, 링킹의 각 단계와 그 중요성에 대해 설명합니다."],"meta_canonical":"kr,f-lab!\/insight\/understanding-cpp-compilation-process?gad_source=1&gad_campaignid=22368870602&gbraid=0AAAAACGgUFc-0uUMb_9LemFclao1RiA1T s443","ml_categories_json":"","ml_types_json":"","ml_intent_types_json":"","meta_language":"ko","attrs_author":null,"attrs_publish_time":1712016000,"attrs_original_publish_time":1712016000,"attrs_is_republished":0,"attrs_nr_words":"569","attrs_boilerpipe_nr_words":"458","body_ext_links_number":0,"body_int_links_number":1,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":1343,"download_ttfb_msec":1078,"download_size":18445}

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	FAIL	`meta_canonical IS NULL OR = '' OR = src_unparsed`	kr,f-lab!/insight/understanding-cpp-compilation-process?gad_source=1&gad_campaignid=22368870602&gbraid=0AAAAACGgUFc-0uUMb_9LemFclao1RiA1T s443

Property	Value
URL	https://f-lab.kr/insight/understanding-cpp-compilation-process
Last Crawled	2026-05-19 11:48:16 (15 days ago)
First Indexed	2026-02-01 02:50:45 (4 months ago)
HTTP Status Code	200
Content
Meta Title	C++ 컴파일 과정 이해하기
Meta Description	C++ 프로그램의 컴파일 과정을 이해하고, 전처리, 컴파일, 링킹의 각 단계와 그 중요성에 대해 설명합니다.
Meta Canonical	kr,f-lab!/insight/understanding-cpp-compilation-process?gad_source=1&gad_campaignid=22368870602&gbraid=0AAAAACGgUFc-0uUMb_9LemFclao1RiA1T s443
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	ko
Author	null
Publish Time	2024-04-02 00:00:00 (2 years ago)
Original Publish Time	2024-04-02 00:00:00 (2 years ago)
Republished	No
Word Count (Total)	569
Word Count (Content)	458
Links
External Links	0
Internal Links	1
Technical SEO
Meta Nofollow	No
Meta Noarchive	No
JS Rendered	No
Redirect Target	null
Performance
Download Time (ms)	1,343
TTFB (ms)	1,078
Download Size (bytes)	18,445
Location
Host ID	131 (laksa131)
Partition ID	85
Root Hash	5253659817886637131
Unparsed URL	kr,f-lab!/insight/understanding-cpp-compilation-process s443

🕷️ Crawler Inspector

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1. Shard Calculation

Query:

Response:

2. Crawled Status Check

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Response:

3. Robots.txt Check

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Response:

4. Spam/Ban Check

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Response:

5. Seen Status Check

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