Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 83 (from laksa106)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa083.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 = 79 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://cloud.tencent.cn/developer/article/1639197\')), getAhrefsUnparsedNoserviceFromURL(\'https://cloud.tencent.cn/developer/article/1639197\'))) FORMAT JSONEachRow'

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

Property	Value
URL	https://cloud.tencent.cn/developer/article/1639197
Last Crawled	2026-05-28 00:44:59 (6 days ago)
First Indexed	2025-08-11 08:07:03 (9 months ago)
HTTP Status Code	200
Content
Meta Title	最大似然估计（MLE）原理及计算方法-腾讯云开发者社区-腾讯云
Meta Description	最大似然估计是统计学核心方法，通过概率最大化原理解决实际问题。文章通过黑白球、猎人打猎等生动案例，结合数学公式推导，详解MLE原理及应用场景，包括离散/连续型分布处理步骤，适合机器学习与统计学习者参考。
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	null
ML Page Types	null
ML Intent Types	null
Content Metadata
Language	zh
Author	null
Publish Time	not set
Original Publish Time	2025-08-11 08:07:03 (9 months ago)
Republished	No
Word Count (Total)	219
Word Count (Content)	29
Links
External Links	5
Internal Links	66
Technical SEO
Meta Nofollow	No
Meta Noarchive	No
JS Rendered	No
Redirect Target	null
Performance
Download Time (ms)	593
TTFB (ms)	530
Download Size (bytes)	21,349
Location
Host ID	83 (laksa083)
Partition ID	79
Root Hash	14622380592103195883
Unparsed URL	cn,tencent!cloud,/developer/article/1639197 s443

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1. Shard Calculation

Query:

Response:

2. Crawled Status Check

Query:

Response:

3. Robots.txt Check

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4. Spam/Ban Check

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Response:

5. Seen Status Check

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