Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 13 (from laksa112)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa013.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 = 95 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://studygolang.com/articles/39994\')), getAhrefsUnparsedNoserviceFromURL(\'https://studygolang.com/articles/39994\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/studygolang.com\/articles\/39994","crawl_time":1779514942,"first_indexed_time":1753337290,"http_code":200,"src_unparsed":"com,studygolang!\/articles\/39994 s443","src_root_hash":"3093249659109519013","history_drop_reason":null,"meta_title":"兵哥人工智能工程师：从理论到实战的 AI 技能进阶指南 2025-07-23 18:54·世俗0703 - Go语言中文网 - Golang中文社区","meta_descriptions":["获课：bcwit.top\/15337\/ 获取ZY↑↑方打开链接↑↑ 一、筑牢AI基石 1.数学与编程基础 线性代数：掌握矩阵运算、特征值分解、SVD等，理解其在PCA降维、神经网络中的几何意义。 概率论：贝叶斯定理、最大似然估计、马尔可夫链，为机器学习模型（如Naive Bayes、HMM）奠定理论基础。 编程工具：熟练使用Python（NumPy\/Pandas数据操作）、"],"meta_canonical":"com,studygolang!\/ s443","ml_categories_json":"","ml_types_json":"","ml_intent_types_json":"","meta_language":"zh-cn","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1753337290,"attrs_is_republished":0,"attrs_nr_words":"328","attrs_boilerpipe_nr_words":"103","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":1202,"download_ttfb_msec":1201,"download_size":15301}

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.4 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`	com,studygolang!/ s443

Property	Value
URL	https://studygolang.com/articles/39994
Last Crawled	2026-05-23 05:42:22 (10 days ago)
First Indexed	2025-07-24 06:08:10 (10 months ago)
HTTP Status Code	200
Content
Meta Title	兵哥人工智能工程师：从理论到实战的 AI 技能进阶指南 2025-07-23 18:54·世俗0703 - Go语言中文网 - Golang中文社区
Meta Description	获课：bcwit.top/15337/ 获取ZY↑↑方打开链接↑↑ 一、筑牢AI基石 1.数学与编程基础线性代数：掌握矩阵运算、特征值分解、SVD等，理解其在PCA降维、神经网络中的几何意义。概率论：贝叶斯定理、最大似然估计、马尔可夫链，为机器学习模型（如Naive Bayes、HMM）奠定理论基础。编程工具：熟练使用Python（NumPy/Pandas数据操作）、
Meta Canonical	com,studygolang!/ 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	zh-cn
Author	null
Publish Time	not set
Original Publish Time	2025-07-24 06:08:10 (10 months ago)
Republished	No
Word Count (Total)	328
Word Count (Content)	103
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)	1,202
TTFB (ms)	1,201
Download Size (bytes)	15,301
Location
Host ID	13 (laksa013)
Partition ID	95
Root Hash	3093249659109519013
Unparsed URL	com,studygolang!/articles/39994 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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