🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 168 (from laksa083)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa168.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 = 88 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://learn.microsoft.com/en-us/azure/quantum/concepts-error-correction\')), getAhrefsUnparsedNoserviceFromURL(\'https://learn.microsoft.com/en-us/azure/quantum/concepts-error-correction\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/learn.microsoft.com\/en-us\/azure\/quantum\/concepts-error-correction","crawl_time":1775411305,"first_indexed_time":1718492041,"http_code":200,"src_unparsed":"com,microsoft!learn,\/en-us\/azure\/quantum\/concepts-error-correction s443","src_root_hash":"14615152987638977768","history_drop_reason":null,"meta_title":"Quantum Error Correction Codes - Azure Quantum | Microsoft Learn","meta_descriptions":["Learn how quantum error correction works, the types of quantum errors and codes, and how to correct errors using the three-qubit code as an example."],"meta_canonical":null,"ml_categories_json":"{\"\/Computers_and_Electronics\":898,\"\/Computers_and_Electronics\/Software\":328,\"\/Science\":272,\"\/Science\/Computer_Science\":240,\"\/Science\/Computer_Science\/Other\":189,\"\/Computers_and_Electronics\/Software\/Software_Utilities\":158}","ml_types_json":"{\"\/Article\":998,\"\/Article\/Tutorial_or_Guide\":924}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en-us","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1718492041,"attrs_is_republished":0,"attrs_nr_words":"2708","attrs_boilerpipe_nr_words":"1771","body_ext_links_number":6,"body_int_links_number":154,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":153,"download_ttfb_msec":150,"download_size":58236}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 168 · Partition 88

laksa168

14615152987638977768

📄

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`	2 months ago (distributed domain, exempt)
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://learn.microsoft.com/en-us/azure/quantum/concepts-error-correction

Last Crawled

2026-04-05 17:48:25 (1 month ago)

First Indexed

2024-06-15 22:54:01 (1 year ago)

HTTP Status Code

200

Content

Meta Title

Quantum Error Correction Codes - Azure Quantum | Microsoft Learn

Meta Description

Learn how quantum error correction works, the types of quantum errors and codes, and how to correct errors using the three-qubit code as an example.

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

/Computers_and_Electronics		89.8%
/Computers_and_Electronics/Software		32.8%
/Science		27.2%
/Science/Computer_Science		24.0%
/Science/Computer_Science/Other		18.9%
/Computers_and_Electronics/Software/Software_Utilities		15.8%

Raw JSON

{
    "/Computers_and_Electronics": 898,
    "/Computers_and_Electronics/Software": 328,
    "/Science": 272,
    "/Science/Computer_Science": 240,
    "/Science/Computer_Science/Other": 189,
    "/Computers_and_Electronics/Software/Software_Utilities": 158
}

ML Page Types

/Article		99.8%
/Article/Tutorial_or_Guide		92.4%

Raw JSON

{
    "/Article": 998,
    "/Article/Tutorial_or_Guide": 924
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

en-us

Author

null

Publish Time

not set

Original Publish Time

2024-06-15 22:54:01 (1 year ago)

Republished

Word Count (Total)

2,708

Word Count (Content)

1,771

Links

External Links

Internal Links

154

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

153

TTFB (ms)

150

Download Size (bytes)

58,236

Location

Host ID

168 (laksa168)

Partition ID

Root Hash

14615152987638977768

Unparsed URL

com,microsoft!learn,/en-us/azure/quantum/concepts-error-correction s443