Two-phase locking

Two-phase locking - concurrency control locking protocol in databases and transaction processing. Article “Two-phase locking” in English Wikipedia has 15.2 points for quality (as of July 1, 2026). The article contains 2 references and 8 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 1.69 points.

This article has the best quality in Russian Wikipedia. However, this article is the most popular in English version.

Since the creation of article “Two-phase locking”, its content was written by 85 registered users of English Wikipedia and edited by 131 registered Wikipedia users in all languages.

The article is cited 69 times in English Wikipedia and cited 92 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #1079 in April 2003
• Global: #2904 in April 2003

The highest popularity rank from 2008:

• Local (English): #93694 in December 2014
• Global: #165982 in December 2017

There are 9 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Russian (ru) Двухфазная блокировка		15.2594
2	English (en) Two-phase locking		15.2239
3	Korean (ko) 2단계 로킹		13.5522
4	Chinese (zh) 两阶段锁		13.0157
5	Greek (el) Κλείδωμα δύο Φάσεων		12.4583
6	Spanish (es) Bloqueo de dos fases		11.0812
7	Italian (it) Two-phase locking		9.4039
8	Japanese (ja) ツーフェーズロック		3.6754
9	Persian (fa) قفل‌گذاری دو مرحله‌ای		1.0965

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "Two-phase locking" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Two-phase locking		1 191 239
2	Japanese (ja) ツーフェーズロック		39 042
3	Spanish (es) Bloqueo de dos fases		22 465
4	Chinese (zh) 两阶段锁		15 128
5	Russian (ru) Двухфазная блокировка		13 388
6	Italian (it) Two-phase locking		10 851
7	Greek (el) Κλείδωμα δύο Φάσεων		4 499
8	Persian (fa) قفل‌گذاری دو مرحله‌ای		4 108
9	Korean (ko) 2단계 로킹		544

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Two-phase locking" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Two-phase locking		948
2	Chinese (zh) 两阶段锁		91
3	Italian (it) Two-phase locking		40
4	Spanish (es) Bloqueo de dos fases		33
5	Japanese (ja) ツーフェーズロック		31
6	Russian (ru) Двухфазная блокировка		29
7	Persian (fa) قفل‌گذاری دو مرحله‌ای		12
8	Korean (ko) 2단계 로킹		9
9	Greek (el) Κλείδωμα δύο Φάσεων		1

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Two-phase locking" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Two-phase locking		85
2	Italian (it) Two-phase locking		16
3	Japanese (ja) ツーフェーズロック		10
4	Spanish (es) Bloqueo de dos fases		7
5	Greek (el) Κλείδωμα δύο Φάσεων		5
6	Russian (ru) Двухфазная блокировка		4
7	Chinese (zh) 两阶段锁		2
8	Persian (fa) قفل‌گذاری دو مرحله‌ای		1
9	Korean (ko) 2단계 로킹		1

More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Two-phase locking" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Greek (el) Κλείδωμα δύο Φάσεων		0
2	English (en) Two-phase locking		0
3	Spanish (es) Bloqueo de dos fases		0
4	Persian (fa) قفل‌گذاری دو مرحله‌ای		0
5	Italian (it) Two-phase locking		0
6	Japanese (ja) ツーフェーズロック		0
7	Korean (ko) 2단계 로킹		0
8	Russian (ru) Двухфазная блокировка		0
9	Chinese (zh) 两阶段锁		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Two-phase locking" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Two-phase locking		69
2	Japanese (ja) ツーフェーズロック		8
3	Greek (el) Κλείδωμα δύο Φάσεων		3
4	Spanish (es) Bloqueo de dos fases		3
5	Italian (it) Two-phase locking		3
6	Korean (ko) 2단계 로킹		3
7	Chinese (zh) 两阶段锁		2
8	Russian (ru) Двухфазная блокировка		1
9	Persian (fa) قفل‌گذاری دو مرحله‌ای		0

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#	Language	Value
el	Greek Κλείδωμα δύο Φάσεων
en	English Two-phase locking
es	Spanish Bloqueo de dos fases
fa	Persian قفل‌گذاری دو مرحله‌ای
it	Italian Two-phase locking
ja	Japanese ツーフェーズロック
ko	Korean 2단계 로킹
ru	Russian Двухфазная блокировка
zh	Chinese 两阶段锁

Best Rank

English: #93694 12.2014

Global: #165982 12.2017

Best Rank

English: #1079 04.2003

Global: #2904 04.2003

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information