🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 109 (from laksa163)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa109.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 = 49 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://nostarch.com/learnbayes\')), getAhrefsUnparsedNoserviceFromURL(\'https://nostarch.com/learnbayes\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/nostarch.com\/learnbayes","crawl_time":1777161838,"first_indexed_time":1540427691,"http_code":200,"src_unparsed":"com,nostarch!\/learnbayes s443","src_root_hash":"13729791586504229909","history_drop_reason":null,"meta_title":"Bayesian Statistics the Fun Way | No Starch Press","meta_descriptions":["With Bayesian Statistics the Fun Way you'll finally understand probability with Bayes, and have fun doing it."],"meta_canonical":null,"ml_categories_json":"{\"\/Science\":511,\"\/Science\/Mathematics\":453,\"\/Science\/Mathematics\/Statistics\":446,\"\/Books_and_Literature\":443,\"\/Books_and_Literature\/Book_Retailers\":182,\"\/Shopping\":117}","ml_types_json":"{\"\/Listing\":765,\"\/Listing\/Product\":764}","ml_intent_types_json":"{\"Transactional\":438,\"Informational\":408,\"Commercial\":277}","meta_language":"en","attrs_author":null,"attrs_publish_time":1539645902,"attrs_original_publish_time":1539645902,"attrs_is_republished":0,"attrs_nr_words":"892","attrs_boilerpipe_nr_words":"689","body_ext_links_number":11,"body_int_links_number":64,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":95,"download_ttfb_msec":93,"download_size":10450}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 109 · Partition 49

laksa109

13729791586504229909

📄

INDEXABLE

✅

CRAWLED

1 month 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`	1.3 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://nostarch.com/learnbayes

Last Crawled

2026-04-26 00:03:58 (1 month ago)

First Indexed

2018-10-25 00:34:51 (7 years ago)

HTTP Status Code

200

Content

Meta Title

Bayesian Statistics the Fun Way | No Starch Press

Meta Description

With Bayesian Statistics the Fun Way you'll finally understand probability with Bayes, and have fun doing it.

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

/Science		51.1%
/Science/Mathematics		45.3%
/Science/Mathematics/Statistics		44.6%
/Books_and_Literature		44.3%
/Books_and_Literature/Book_Retailers		18.2%
/Shopping		11.7%

Raw JSON

{
    "/Science": 511,
    "/Science/Mathematics": 453,
    "/Science/Mathematics/Statistics": 446,
    "/Books_and_Literature": 443,
    "/Books_and_Literature/Book_Retailers": 182,
    "/Shopping": 117
}

ML Page Types

/Listing		76.5%
/Listing/Product		76.4%

Raw JSON

{
    "/Listing": 765,
    "/Listing/Product": 764
}

ML Intent Types

Transactional		43.8%
Informational		40.8%
Commercial		27.7%

Raw JSON

{
    "Transactional": 438,
    "Informational": 408,
    "Commercial": 277
}

Content Metadata

Language

Author

null

Publish Time

2018-10-15 23:25:02 (7 years ago)

Original Publish Time

2018-10-15 23:25:02 (7 years ago)

Republished

Word Count (Total)

892

Word Count (Content)

689

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Redirect Target

null

Performance

Download Time (ms)

TTFB (ms)

Download Size (bytes)

10,450

Location

Host ID

109 (laksa109)

Partition ID

Root Hash

13729791586504229909

Unparsed URL

com,nostarch!/learnbayes s443