🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 195 (from laksa022)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa195.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 = 32 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://kb.altinity.com/altinity-kb-queries-and-syntax/group-by/tricks/\')), getAhrefsUnparsedNoserviceFromURL(\'https://kb.altinity.com/altinity-kb-queries-and-syntax/group-by/tricks/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/kb.altinity.com\/altinity-kb-queries-and-syntax\/group-by\/tricks\/","crawl_time":1777276027,"first_indexed_time":1655970822,"http_code":200,"src_unparsed":"com,altinity!kb,\/altinity-kb-queries-and-syntax\/group-by\/tricks\/ s443","src_root_hash":"3533317439195346595","history_drop_reason":null,"meta_title":"GROUP BY tricks | Altinity® Knowledge Base for ClickHouse®","meta_descriptions":["Tricks for GROUP BY memory usage optimization"],"meta_canonical":null,"ml_categories_json":"{\"\/Computers_and_Electronics\":915,\"\/Computers_and_Electronics\/Software\":833,\"\/Computers_and_Electronics\/Software\/Software_Utilities\":598,\"\/Business_and_Industrial\":132,\"\/Internet_and_Telecom\":128,\"\/Internet_and_Telecom\/Web_Services\":116,\"\/Business_and_Industrial\/Business_Operations\":107}","ml_types_json":"{\"\/Article\":858,\"\/Article\/How_to\":455}","ml_intent_types_json":"{\"Informational\":931,\"Commercial\":100}","meta_language":"en","attrs_author":null,"attrs_publish_time":1722294494,"attrs_original_publish_time":1655970822,"attrs_is_republished":1,"attrs_nr_words":"7932","attrs_boilerpipe_nr_words":"6363","body_ext_links_number":25,"body_int_links_number":291,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":83,"download_ttfb_msec":80,"download_size":39523}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 195 · Partition 32

laksa195

3533317439195346595

📄

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`	1.2 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://kb.altinity.com/altinity-kb-queries-and-syntax/group-by/tricks/

Last Crawled

2026-04-27 07:47:07 (1 month ago)

First Indexed

2022-06-23 07:53:42 (3 years ago)

HTTP Status Code

200

Content

Meta Title

GROUP BY tricks | Altinity® Knowledge Base for ClickHouse®

Meta Description

Tricks for GROUP BY memory usage optimization

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		91.5%
/Computers_and_Electronics/Software		83.3%
/Computers_and_Electronics/Software/Software_Utilities		59.8%
/Business_and_Industrial		13.2%
/Internet_and_Telecom		12.8%
/Internet_and_Telecom/Web_Services		11.6%
/Business_and_Industrial/Business_Operations		10.7%

Raw JSON

{
    "/Computers_and_Electronics": 915,
    "/Computers_and_Electronics/Software": 833,
    "/Computers_and_Electronics/Software/Software_Utilities": 598,
    "/Business_and_Industrial": 132,
    "/Internet_and_Telecom": 128,
    "/Internet_and_Telecom/Web_Services": 116,
    "/Business_and_Industrial/Business_Operations": 107
}

ML Page Types

/Article		85.8%
/Article/How_to		45.5%

Raw JSON

{
    "/Article": 858,
    "/Article/How_to": 455
}

ML Intent Types

Informational		93.1%
Commercial		10.0%

Raw JSON

{
    "Informational": 931,
    "Commercial": 100
}

Content Metadata

Language

Author

null

Publish Time

2024-07-29 23:08:14 (1 year ago)

Original Publish Time

2022-06-23 07:53:42 (3 years ago)

Republished

Yes

Word Count (Total)

7,932

Word Count (Content)

6,363

Links

External Links

Internal Links

291

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Redirect Target

null

Performance

Download Time (ms)

TTFB (ms)

Download Size (bytes)

39,523

Location

Host ID

195 (laksa195)

Partition ID

Root Hash

3533317439195346595

Unparsed URL

com,altinity!kb,/altinity-kb-queries-and-syntax/group-by/tricks/ s443