🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 179 (from laksa100)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa179.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 = 30 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://publichealth.jhu.edu/2024/what-to-know-about-covid-rebound\')), getAhrefsUnparsedNoserviceFromURL(\'https://publichealth.jhu.edu/2024/what-to-know-about-covid-rebound\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/publichealth.jhu.edu\/2024\/what-to-know-about-covid-rebound","crawl_time":1779848694,"first_indexed_time":1708504886,"http_code":200,"src_unparsed":"edu,jhu!publichealth,\/2024\/what-to-know-about-covid-rebound s443","src_root_hash":"6599457417117746179","history_drop_reason":null,"meta_title":"What to Know About COVID Rebound | Johns Hopkins | Bloomberg School of Public Health","meta_descriptions":["Some people recover from COVID only to have their symptoms return a few days later. That doesn’t surprise virologists."],"meta_canonical":null,"ml_categories_json":"{\"\/Health\":949,\"\/Health\/Public_Health\":884,\"\/Health\/Public_Health\/Health_Policy\":843,\"\/Science\":201,\"\/Science\/Biological_Sciences\":200,\"\/Science\/Biological_Sciences\/Other\":166}","ml_types_json":"{\"\/Article\":997,\"\/Article\/News_Update\":363}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en","attrs_author":null,"attrs_publish_time":1708430400,"attrs_original_publish_time":1708430400,"attrs_is_republished":0,"attrs_nr_words":"1579","attrs_boilerpipe_nr_words":"1042","body_ext_links_number":21,"body_int_links_number":84,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":377,"download_ttfb_msec":376,"download_size":16016}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 179 · Partition 30

laksa179

6599457417117746179

📄

INDEXABLE

✅

CRAWLED

7 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`	0.2 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://publichealth.jhu.edu/2024/what-to-know-about-covid-rebound

Last Crawled

2026-05-27 02:24:54 (7 days ago)

First Indexed

2024-02-21 08:41:26 (2 years ago)

HTTP Status Code

200

Content

Meta Title

What to Know About COVID Rebound | Johns Hopkins | Bloomberg School of Public Health

Meta Description

Some people recover from COVID only to have their symptoms return a few days later. That doesn’t surprise virologists.

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

/Health		94.9%
/Health/Public_Health		88.4%
/Health/Public_Health/Health_Policy		84.3%
/Science		20.1%
/Science/Biological_Sciences		20.0%
/Science/Biological_Sciences/Other		16.6%

Raw JSON

{
    "/Health": 949,
    "/Health/Public_Health": 884,
    "/Health/Public_Health/Health_Policy": 843,
    "/Science": 201,
    "/Science/Biological_Sciences": 200,
    "/Science/Biological_Sciences/Other": 166
}

ML Page Types

/Article		99.7%
/Article/News_Update		36.3%

Raw JSON

{
    "/Article": 997,
    "/Article/News_Update": 363
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

Author

null

Publish Time

2024-02-20 12:00:00 (2 years ago)

Original Publish Time

2024-02-20 12:00:00 (2 years ago)

Republished

Word Count (Total)

1,579

Word Count (Content)

1,042

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

377

TTFB (ms)

376

Download Size (bytes)

16,016

Location

Host ID

179 (laksa179)

Partition ID

Root Hash

6599457417117746179

Unparsed URL

edu,jhu!publichealth,/2024/what-to-know-about-covid-rebound s443