A wrapper class for the pure-PHP memcached client, exposing a BagOStuff interface. More...

Inheritance diagram for MemcachedPhpBagOStuff:

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Collaboration diagram for MemcachedPhpBagOStuff:

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Public Member Functions
	__construct ( $params)
	Available parameters are:

	decr ( $key, $value=1)
	Decrease stored value of $key by $value while preserving its TTL.

	getMulti (array $keys, $flags=0)
	Get an associative array containing the item for each of the keys that have items.

	incr ( $key, $value=1)
	Increase stored value of $key by $value while preserving its TTL.

	setDebug ( $debug)

Public Member Functions inherited from MemcachedBagOStuff
	__construct (array $params)
	$params include:

	add ( $key, $value, $exptime=0)

	changeTTL ( $key, $exptime=0)
	Reset the TTL on a key if it exists.

	delete ( $key)
	Delete an item.

	fixExpiry ( $expiry)
	TTLs higher than 30 days will be detected as absolute TTLs (UNIX timestamps), and will result in the cache entry being discarded immediately because the expiry is in the past.

	getClient ()
	Get the underlying client object.

	makeKeyInternal ( $keyspace, $args)
	Construct a cache key.

	merge ( $key, callable $callback, $exptime=0, $attempts=10, $flags=0)
	Merge changes into the existing cache value (possibly creating a new one)

	modifySimpleRelayEvent (array $event)
	Modify a cache update operation array for EventRelayer::notify()

	set ( $key, $value, $exptime=0, $flags=0)
	Set an item.

	validateKeyEncoding ( $key)
	Ensure that a key is safe to use (contains no control characters and no characters above the ASCII range.)

Public Member Functions inherited from BagOStuff
	addBusyCallback (callable $workCallback)
	Let a callback be run to avoid wasting time on special blocking calls.

	clearLastError ()
	Clear the "last error" registry.

	deleteObjectsExpiringBefore ( $date, $progressCallback=false)
	Delete all objects expiring before a certain date.

	get ( $key, $flags=0, $oldFlags=null)
	Get an item with the given key.

	getLastError ()
	Get the "last error" registered; clearLastError() should be called manually.

	getQoS ( $flag)

	getScopedLock ( $key, $timeout=6, $expiry=30, $rclass='')
	Get a lightweight exclusive self-unlocking lock.

	getWithSetCallback ( $key, $ttl, $callback, $flags=0)
	Get an item with the given key, regenerating and setting it if not found.

	incrWithInit ( $key, $ttl, $value=1, $init=1)
	Increase stored value of $key by $value while preserving its TTL.

	lock ( $key, $timeout=6, $expiry=6, $rclass='')
	Acquire an advisory lock on a key string.

	makeGlobalKey ()
	Make a global cache key.

	makeKey ()
	Make a cache key, scoped to this instance's keyspace.

	setLogger (LoggerInterface $logger)

	setMulti (array $data, $exptime=0)
	Batch insertion.

	unlock ( $key)
	Release an advisory lock on a key string.

Additional Inherited Members
Public Attributes inherited from BagOStuff
const	ERR_NO_RESPONSE = 1

const	ERR_NONE = 0
	Possible values for getLastError()

const	ERR_UNEXPECTED = 3

const	ERR_UNREACHABLE = 2

const	READ_LATEST = 1
	Bitfield constants for get()/getMulti()

const	READ_VERIFIED = 2

const	WRITE_CACHE_ONLY = 2

const	WRITE_SYNC = 1
	Bitfield constants for set()/merge()

Public Attributes inherited from IExpiringStore
const	ATTR_EMULATION = 1

const	ATTR_SYNCWRITES = 2

const	QOS_EMULATION_SQL = 1

const	QOS_SYNCWRITES_BE = 2

const	QOS_SYNCWRITES_NONE = 1

const	QOS_SYNCWRITES_QC = 3

const	QOS_SYNCWRITES_SS = 4

const	QOS_UNKNOWN = INF

const	TTL_DAY = 86400

const	TTL_HOUR = 3600

const	TTL_INDEFINITE = 0

const	TTL_MINUTE = 60

const	TTL_MONTH = 2592000

const	TTL_PROC_LONG = 30

const	TTL_PROC_SHORT = 3

const	TTL_WEEK = 604800

const	TTL_YEAR = 31536000

Protected Member Functions inherited from MemcachedBagOStuff
	applyDefaultParams ( $params)
	Fill in some defaults for missing keys in $params.

	cas ( $casToken, $key, $value, $exptime=0)
	Check and set an item.

	debugLog ( $text)
	Send a debug message to the log.

	doGet ( $key, $flags=0)

	getWithToken ( $key, &$casToken, $flags=0)

Protected Member Functions inherited from BagOStuff
	convertExpiry ( $exptime)
	Convert an optionally relative time to an absolute time.

	convertToRelative ( $exptime)
	Convert an optionally absolute expiry time to a relative time.

	debug ( $text)

	isInteger ( $value)
	Check if a value is an integer.

	mergeFlagMaps (array $bags)
	Merge the flag maps of one or more BagOStuff objects into a "lowest common denominator" map.

	mergeViaCas ( $key, $callback, $exptime=0, $attempts=10)

	mergeViaLock ( $key, $callback, $exptime=0, $attempts=10, $flags=0)

	setLastError ( $err)
	Set the "last error" registry.

Protected Attributes inherited from MemcachedBagOStuff
MemcachedClient Memcached	$client

Protected Attributes inherited from BagOStuff
callback null	$asyncHandler

integer[]	$attrMap = []
	Map of (ATTR_* class constant => QOS_* class constant)

callable[]	$busyCallbacks = []

string	$keyspace = 'local'

integer	$lastError = self::ERR_NONE
	ERR_* class constant.

array[]	$locks = []
	Lock tracking.

LoggerInterface	$logger

integer	$syncTimeout
	Seconds.

Detailed Description

A wrapper class for the pure-PHP memcached client, exposing a BagOStuff interface.

Definition at line 29 of file MemcachedPhpBagOStuff.php.

Constructor & Destructor Documentation

◆ __construct()

MemcachedPhpBagOStuff::__construct ( $params )

Available parameters are:

servers: The list of IP:port combinations holding the memcached servers.
debug: Whether to set the debug flag in the underlying client.
persistent: Whether to use a persistent connection
compress_threshold: The minimum size an object must be before it is compressed
timeout: The read timeout in microseconds
connect_timeout: The connect timeout in seconds

Parameters

array $params

Definition at line 41 of file MemcachedPhpBagOStuff.php.

References $params, and MemcachedBagOStuff\applyDefaultParams().

Member Function Documentation

◆ decr()

MemcachedPhpBagOStuff::decr	(	$key,
		$value = `1`
	)

Decrease stored value of $key by $value while preserving its TTL.

Parameters

string	$key
int	$value

Returns: int|bool New value or false on failure

Reimplemented from BagOStuff.

Definition at line 68 of file MemcachedPhpBagOStuff.php.

References $value, and MemcachedBagOStuff\validateKeyEncoding().

◆ getMulti()

MemcachedPhpBagOStuff::getMulti	(	array	$keys,
			$flags = `0`
	)

Get an associative array containing the item for each of the keys that have items.

Parameters

array	$keys	List of strings
integer	$flags	Bitfield; supports READ_LATEST [optional]

Returns: array

Reimplemented from BagOStuff.

Definition at line 54 of file MemcachedPhpBagOStuff.php.

References $keys, as, and MemcachedBagOStuff\validateKeyEncoding().

◆ incr()

MemcachedPhpBagOStuff::incr	(	$key,
		$value = `1`
	)

Increase stored value of $key by $value while preserving its TTL.

Parameters

string	$key	Key to increase
int	$value	Value to add to $key (Default 1)

Returns: int|bool New value or false on failure

Reimplemented from BagOStuff.

Definition at line 62 of file MemcachedPhpBagOStuff.php.

References $value, and MemcachedBagOStuff\validateKeyEncoding().

◆ setDebug()

MemcachedPhpBagOStuff::setDebug ( $bool )

Parameters

bool $bool

Reimplemented from BagOStuff.

Definition at line 50 of file MemcachedPhpBagOStuff.php.

References $debug.

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

includes/libs/objectcache/MemcachedPhpBagOStuff.php

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ decr()

◆ getMulti()

◆ incr()

◆ setDebug()