Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 126 (from laksa044)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa126.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 = 11 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.tsinghua.edu.cn/info/1181/91124.htm\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.tsinghua.edu.cn/info/1181/91124.htm\'))) FORMAT JSONEachRow'

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	FAIL	`download_stamp > now() - 6 MONTH`	50.2 months ago
History drop	FAIL	`isNull(history_drop_reason)`	tooold
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.tsinghua.edu.cn/info/1181/91124.htm
Last Crawled	2022-04-20 04:18:29 (4 years ago)
First Indexed	2022-01-27 03:34:54 (4 years ago)
HTTP Status Code	200
Content
Meta Title	刷新你的想象！解密冬奥会背后的“清华智慧”-清华大学
Meta Description	, 清华大学作为参与“科技冬奥”项目最多的单位，共牵头7个项目、18个课题，参与子课题38个，涉及院系17个，包括体育部、工物系、建筑系、地学系、土木系、电子系、电机系、计算机系、自动化系、核研院、机械系、网络研究院、车辆学院、软件学院、美术学院、公管学院、未来实验室等。
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	not set
Republished	No
Word Count (Total)	122
Word Count (Content)	0
Links
External Links	1
Internal Links	28
Technical SEO
Meta Nofollow	No
Meta Noarchive	No
JS Rendered	No
Redirect Target	null
Performance
Download Time (ms)	1,077
TTFB (ms)	829
Download Size (bytes)	16,749
Location
Host ID	126 (laksa126)
Partition ID	11
Root Hash	17530557217481622326
Unparsed URL	cn,edu,tsinghua!www,/info/1181/91124.htm s443

🕷️ Crawler Inspector

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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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Response:

5. Seen Status Check

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