🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 99 (from laksa190)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa099.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 = 91 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.dataapplab.com/machine-learning-interview-questions/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.dataapplab.com/machine-learning-interview-questions/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.dataapplab.com\/machine-learning-interview-questions\/","crawl_time":1779723898,"first_indexed_time":1550114818,"http_code":200,"src_unparsed":"com,dataapplab!www,\/machine-learning-interview-questions\/ s443","src_root_hash":"3498991255532658299","history_drop_reason":null,"meta_title":"史上最全！41道 Machine Learning 高频面试题都在这里了。 - Data Application Lab","meta_descriptions":[],"meta_canonical":null,"ml_categories_json":"{\"\/Jobs_and_Education\":790,\"\/Jobs_and_Education\/Education\":478,\"\/Computers_and_Electronics\":398,\"\/Jobs_and_Education\/Education\/Training_and_Certification\":353,\"\/Computers_and_Electronics\/Software\":323,\"\/Computers_and_Electronics\/Software\/Educational_Software\":152}","ml_types_json":"{\"\/Article\":955,\"\/Article\/Tutorial_or_Guide\":802}","ml_intent_types_json":"{\"Informational\":985,\"Commercial\":113}","meta_language":"en-us","attrs_author":"Zhang Bonnie","attrs_publish_time":1550114259,"attrs_original_publish_time":1550114259,"attrs_is_republished":0,"attrs_nr_words":"927","attrs_boilerpipe_nr_words":"680","body_ext_links_number":6,"body_int_links_number":39,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":513,"download_ttfb_msec":446,"download_size":34096}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 99 · Partition 91

laksa099

3498991255532658299

📄

INDEXABLE

✅

CRAWLED

8 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.3 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

Page Details

Property

Value

URL

https://www.dataapplab.com/machine-learning-interview-questions/

Last Crawled

2026-05-25 15:44:58 (8 days ago)

First Indexed

2019-02-14 03:26:58 (7 years ago)

HTTP Status Code

200

Content

Meta Title

史上最全！41道 Machine Learning 高频面试题都在这里了。 - Data Application Lab

Meta Description

null

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

/Jobs_and_Education		79.0%
/Jobs_and_Education/Education		47.8%
/Computers_and_Electronics		39.8%
/Jobs_and_Education/Education/Training_and_Certification		35.3%
/Computers_and_Electronics/Software		32.3%
/Computers_and_Electronics/Software/Educational_Software		15.2%

Raw JSON

{
    "/Jobs_and_Education": 790,
    "/Jobs_and_Education/Education": 478,
    "/Computers_and_Electronics": 398,
    "/Jobs_and_Education/Education/Training_and_Certification": 353,
    "/Computers_and_Electronics/Software": 323,
    "/Computers_and_Electronics/Software/Educational_Software": 152
}

ML Page Types

/Article		95.5%
/Article/Tutorial_or_Guide		80.2%

Raw JSON

{
    "/Article": 955,
    "/Article/Tutorial_or_Guide": 802
}

ML Intent Types

Informational		98.5%
Commercial		11.3%

Raw JSON

{
    "Informational": 985,
    "Commercial": 113
}

Content Metadata

Language

en-us

Author

Zhang Bonnie

Publish Time

2019-02-14 03:17:39 (7 years ago)

Original Publish Time

2019-02-14 03:17:39 (7 years ago)

Republished

Word Count (Total)

927

Word Count (Content)

680

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Redirect Target

null

Performance

Download Time (ms)

513

TTFB (ms)

446

Download Size (bytes)

34,096

Location

Host ID

99 (laksa099)

Partition ID

Root Hash

3498991255532658299

Unparsed URL

com,dataapplab!www,/machine-learning-interview-questions/ s443