MediaWiki\Language\LCStoreCDB Class Reference

LCStore implementation which stores data as a collection of CDB files. More...

Inherits MediaWiki\Language\LCStore.

Collaboration diagram for MediaWiki\Language\LCStoreCDB:

Public Member Functions
	__construct (array $conf=[])
	finishWrite ()
	Finish a cache write transaction.
	get ( $code, $key)
	Get a value. Parameters string $code Language code string $key Cache key
	lateFallback ()
	Can this cache type delay fallback lookups to read time?Returning true will cause the fallbacks to be skipped when recaching data, and instead performed via multiple reads if necessary at runtime.This is best when performing lookups is extremely low-cost, such as LCStoreStaticArray with the lateFallback option.When reading from disk or network, trading off the space for fewer lookups may still be a win. Returning false will keep the classic behavior of pre-filling all the fallback chains for each language.
	set ( $key, $value)
	Set a key to a given value.startWrite() must be called before this is called, and finishWrite() must be called after. Parameters string $key mixed $value
	startWrite ( $code)
	Start a cache write transaction. Parameters string $code Language code

Protected Member Functions
	getFileName ( $code)

Detailed Description

LCStore implementation which stores data as a collection of CDB files.

Profiling indicates that on Linux, this implementation outperforms MySQL if the directory is on a local filesystem and there is ample kernel cache space. The performance advantage is greater when the DBA extension is available than it is with the PHP port.

See Cdb.php and https://cr.yp.to/cdb.html

Definition at line 28 of file LCStoreCDB.php.

Constructor & Destructor Documentation

__construct()

MediaWiki\Language\LCStoreCDB::__construct

(

array

$conf = []

)

Definition at line 42 of file LCStoreCDB.php.

Member Function Documentation

finishWrite()

MediaWiki\Language\LCStoreCDB::finishWrite

(

)

Finish a cache write transaction.

Implements MediaWiki\Language\LCStore.

Definition at line 95 of file LCStoreCDB.php.

get()

MediaWiki\Language\LCStoreCDB::get	(		$code,
			$key )

Get a value.

Parameters

string	$code	Language code
string	$key	Cache key

Implements MediaWiki\Language\LCStore.

Definition at line 47 of file LCStoreCDB.php.

References MediaWiki\Language\LCStoreCDB\getFileName(), and wfDebug().

getFileName()

MediaWiki\Language\LCStoreCDB::getFileName ( $code )

protected

Parameters

string | null

$code

Returns

string

Definition at line 114 of file LCStoreCDB.php.

Referenced by MediaWiki\Language\LCStoreCDB\get(), and MediaWiki\Language\LCStoreCDB\startWrite().

lateFallback()

MediaWiki\Language\LCStoreCDB::lateFallback

(

)

Can this cache type delay fallback lookups to read time?Returning true will cause the fallbacks to be skipped when recaching data, and instead performed via multiple reads if necessary at runtime.This is best when performing lookups is extremely low-cost, such as LCStoreStaticArray with the lateFallback option.When reading from disk or network, trading off the space for fewer lookups may still be a win. Returning false will keep the classic behavior of pre-filling all the fallback chains for each language.

Implements MediaWiki\Language\LCStore.

Definition at line 123 of file LCStoreCDB.php.

set()

MediaWiki\Language\LCStoreCDB::set	(		$key,
			$value )

Set a key to a given value.startWrite() must be called before this is called, and finishWrite() must be called after.

Parameters

string	$key
mixed	$value

Implements MediaWiki\Language\LCStore.

Definition at line 103 of file LCStoreCDB.php.

startWrite()

MediaWiki\Language\LCStoreCDB::startWrite

(

$code

)

Start a cache write transaction.

Parameters

string

$code

Language code

Implements MediaWiki\Language\LCStore.

Definition at line 80 of file LCStoreCDB.php.

References MediaWiki\Language\LCStoreCDB\getFileName(), and wfMkdirParents().

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The documentation for this class was generated from the following file:

• includes/Language/LCStoreCDB.php