🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 60 (from laksa118)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa060.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 = 62 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://startup-house.com/glossary/what-is-error-correction-codes\')), getAhrefsUnparsedNoserviceFromURL(\'https://startup-house.com/glossary/what-is-error-correction-codes\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/startup-house.com\/glossary\/what-is-error-correction-codes","crawl_time":1779593325,"first_indexed_time":1715292897,"http_code":200,"src_unparsed":"com,startup-house!\/glossary\/what-is-error-correction-codes s443","src_root_hash":"11462227510513112460","history_drop_reason":null,"meta_title":"What is Error Correction Codes - Startup House","meta_descriptions":["Learn about Error Correction Codes (ECC), essential algorithms used to detect and correct errors during digital data transmission or storage. #ECC #DataAccuracy #Reliability"],"meta_canonical":null,"ml_categories_json":"{\"\/Computers_and_Electronics\":808,\"\/Computers_and_Electronics\/Computer_Security\":402,\"\/Computers_and_Electronics\/Computer_Security\/Network_Security\":363,\"\/Internet_and_Telecom\":303,\"\/Internet_and_Telecom\/Communications_Equipment\":142,\"\/Internet_and_Telecom\/Communications_Equipment\/Other\":113}","ml_types_json":"{\"\/Article\":994,\"\/Article\/Definitions\":777}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1715292897,"attrs_is_republished":0,"attrs_nr_words":"886","attrs_boilerpipe_nr_words":"581","body_ext_links_number":4,"body_int_links_number":43,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":157,"download_ttfb_msec":155,"download_size":24819}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 60 · Partition 62

laksa060

11462227510513112460

📄

INDEXABLE

✅

CRAWLED

10 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://startup-house.com/glossary/what-is-error-correction-codes

Last Crawled

2026-05-24 03:28:45 (10 days ago)

First Indexed

2024-05-09 22:14:57 (2 years ago)

HTTP Status Code

200

Content

Meta Title

What is Error Correction Codes - Startup House

Meta Description

Learn about Error Correction Codes (ECC), essential algorithms used to detect and correct errors during digital data transmission or storage. #ECC #DataAccuracy #Reliability

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		80.8%
/Computers_and_Electronics/Computer_Security		40.2%
/Computers_and_Electronics/Computer_Security/Network_Security		36.3%
/Internet_and_Telecom		30.3%
/Internet_and_Telecom/Communications_Equipment		14.2%
/Internet_and_Telecom/Communications_Equipment/Other		11.3%

Raw JSON

{
    "/Computers_and_Electronics": 808,
    "/Computers_and_Electronics/Computer_Security": 402,
    "/Computers_and_Electronics/Computer_Security/Network_Security": 363,
    "/Internet_and_Telecom": 303,
    "/Internet_and_Telecom/Communications_Equipment": 142,
    "/Internet_and_Telecom/Communications_Equipment/Other": 113
}

ML Page Types

/Article		99.4%
/Article/Definitions		77.7%

Raw JSON

{
    "/Article": 994,
    "/Article/Definitions": 777
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

Author

null

Publish Time

not set

Original Publish Time

2024-05-09 22:14:57 (2 years ago)

Republished

Word Count (Total)

886

Word Count (Content)

581

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

157

TTFB (ms)

155

Download Size (bytes)

24,819

Location

Host ID

60 (laksa060)

Partition ID

Root Hash

11462227510513112460

Unparsed URL

com,startup-house!/glossary/what-is-error-correction-codes s443