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De big data revolutie hoe de data-explosie al onze vragen gaat beantwoorden

by Mayer-Schönberger, Viktor, Cukier, Kenneth
Published 2013

Boek

Big data de nieuwe goudkoorts?

by Breur, Tom
Published 2013

Boek

Sociale big data opkomst van de data-gedreven samenleving

by Pentland, Alex 1952-
Published 2014

Boek

Dit is big data wat het is, hoe het werkt en wat het oplevert

by Lohr, Steve
Published 2015

Boek

Succes met big data officieel trainingsmateriaal bij het Big Data Foundation- en Practitioner-certificaat

by Zee, Wiebe van der, Zee, Bert van der
Published 2016

Boek

De data-economie waarom data het nieuwe geld gaat vervangen, wat dit betekent voor onze economie en hoe je hierop in kunt spelen

by Mayer-Schönberger, Viktor, Ramge, Thomas
Published 2018

Boek

Big data

by Sloot, Bart van der
Published 2018

Boek

foreach (glob($this->getPath() . "/sess_*") as $filename) { if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); } } return true; } /** * A function that is called internally when session data is to be saved. * * @param string $sess_id The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sess_id, $data) { $sess_file = $this->getPath() . '/sess_' . $sess_id; if ($fp = fopen($sess_file, "w")) { $return = fwrite($fp, $data); fclose($fp); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message. echo 'Cannot write session to ' . $sess_file . "\n"; return false; } }

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return true; } /** * Write function that is called when session data is to be saved. * * @param string $sess_id The current session ID * @param string $data The session data to write * * @return bool */ public function write($sess_id, $data) { if ($this->writesDisabled) { return true; } return $this->saveSession($sess_id, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sess_id The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sess_id, $data); }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

Environment & details:

GET Data

Key	Value
filter	Array ( [0] => topic_facet:"Datamining" )

POST Data empty

Files empty

Key	Value
VUFIND_SESSION	tmaa20r939ttdrper00qjtr8b6
language	en

Session

Key	Value
__ZF	Array ( [_REQUEST_ACCESS_TIME] => 1746856958.2113 [_VALID] => Array ( [Zend\Session\Validator\Id] => tmaa20r939ttdrper00qjtr8b6 ) )
SessionState	Zend\Stdlib\ArrayObject Object ( [storage:protected] => Array ( [cookiePath] => / ) [flag:protected] => 2 [iteratorClass:protected] => ArrayIterator [protectedProperties:protected] => Array ( [0] => storage [1] => flag [2] => iteratorClass [3] => protectedProperties ) )
Search	Zend\Stdlib\ArrayObject Object ( [storage:protected] => Array ( [last] => /eind/Search/Results?filter%5B%5D=topic_facet%3A%22Datamining%22&type=AllFields [params\|Solr\|hiddenFilters] => Array ( ) [params\|Solr\|limit] => 20 [params\|Solr\|sort] => [params\|Solr\|view] => list ) [flag:protected] => 2 [iteratorClass:protected] => ArrayIterator [protectedProperties:protected] => Array ( [0] => storage [1] => flag [2] => iteratorClass [3] => protectedProperties ) )
FlashMessenger	Zend\Stdlib\ArrayObject Object ( [storage:protected] => Array ( ) [flag:protected] => 2 [iteratorClass:protected] => ArrayIterator [protectedProperties:protected] => Array ( [0] => storage [1] => flag [2] => iteratorClass [3] => protectedProperties ) )

Server/Request Data

Key	Value
REDIRECT_VUFIND_ENV	development
REDIRECT_VUFIND_LOCAL_DIR	/usr/local/vufind/sites/eind
REDIRECT_VUFIND_LOCAL_MODULES	Brocade
REDIRECT_STATUS	200
VUFIND_ENV	development
VUFIND_LOCAL_DIR	/usr/local/vufind/sites/eind
VUFIND_LOCAL_MODULES	Brocade
HTTP_ACCEPT	/
HTTP_USER_AGENT	Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
HTTP_COOKIE	VUFIND_SESSION=tmaa20r939ttdrper00qjtr8b6; language=en
HTTP_ACCEPT_ENCODING	gzip, br, zstd, deflate
HTTP_HOST	vufind2.brocade.uninova.nl
PATH	/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
SERVER_SIGNATURE	<address>Apache/2.4.29 (Ubuntu) Server at vufind2.brocade.uninova.nl Port 80</address>
SERVER_SOFTWARE	Apache/2.4.29 (Ubuntu)
SERVER_NAME	vufind2.brocade.uninova.nl
SERVER_ADDR	10.251.0.151
SERVER_PORT	80
REMOTE_ADDR	18.220.154.82
DOCUMENT_ROOT	/var/www/html
REQUEST_SCHEME	http
CONTEXT_PREFIX	/eind
CONTEXT_DOCUMENT_ROOT	/usr/local/vufind/public
SERVER_ADMIN	webmaster@localhost
SCRIPT_FILENAME	/usr/local/vufind/public/index.php
REMOTE_PORT	46860
REDIRECT_URL	/eind/Search/Results
REDIRECT_QUERY_STRING	filter%5B%5D=topic_facet%3A%22Datamining%22
GATEWAY_INTERFACE	CGI/1.1
SERVER_PROTOCOL	HTTP/1.1
REQUEST_METHOD	GET
QUERY_STRING	filter%5B%5D=topic_facet%3A%22Datamining%22
REQUEST_URI	/eind/Search/Results?filter%5B%5D=topic_facet%3A%22Datamining%22
SCRIPT_NAME	/eind/index.php
PHP_SELF	/eind/index.php
REQUEST_TIME_FLOAT	1746856958.199
REQUEST_TIME	1746856958

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

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Environment & details: