Redundancy and Replication Help Make Your Systems Stress-Free

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Main Author:	Mitchell, Erik
Format:	Recurso educativo Open Access
Language:	en
Published:	2011
Subjects:	Human Factors Engineering Computer System Design Online Systems Gateway Systems Systems Analysis Duplication Database Management Systems Information Technology Redundancy
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

Digitized Special Collections and Multiple User Groups
by: Gueguen, Gretchen
Published: (2010)

The Role of the MELVYL System in University of California Library Automation: The Next Five Years. Technical Report No. 5.
Published: (1991)

Human-Computer Interfaces and OPACs: Introductory Thoughts Related to INNOPAC.
by: Henry, Helen K.
Published: (1991)

Integrating RSS Feeds of New Books into the Campus Course Management System
by: Corrado, Edward M., et al.
Published: (2006)

Designing and Building a Collaborative Library Intranet for All
by: Battles, Jason J.
Published: (2010)

Making Our Own Futures
by: Huwe, Terence K.
Published: (2012)

Building the Infrastructure of Resource Sharing: Union Catalogs, Distributed Search, and Cross-Database Linkage.
by: Lynch, Clifford A.
Published: (1997)

Search Engines for Tomorrow's Scholars
by: Fagan, Jody Condit
Published: (2011)

Information Retrieval in Multimedia Sources in an Electronic Age.
by: Li, Tze-chung
Published: (1988)

Microcomputer-Based User Interface for Library Online Catalogue.
by: Cheng, Chin-Chuan
Published: (1985)

Information Developments and Trends in Europe and Elsewhere.
by: Raitt, David
Published: (1991)

Intranet 2.0 from a Project Management Perspective
by: Sharpe, Paul A., et al.
Published: (2010)

Elin@: Electronic Library Information Navigator--Towards the "One Stop Shop" Information
by: Alwerud, Anna, et al.
Published: (2005)

The LIBS Internet Access Software: An Overview and Evaluation.
by: Stanton, Deidre E., et al.
Published: (1992)

Database Design for Preservation Project Management: The California Newspaper Project.
by: Hayman, Lynne M.
Published: (1997)

Proceedings of the Southern African Online Information Meeting (2nd, Pretoria, South Africa, June 2-4, 1993).
by: Summit, Roger K., et al.
Published: (1993)

Corralling Web 2.0: Building an Intranet that Enables Individuals
by: Etches-Johnson, Amanda, et al.
Published: (2010)

The Method behind the Madness: Acquiring Online Journals and a Solution to Provide Access
by: Skekel, Donna
Published: (2005)

Something There Is That Doesn't Love a Computer (Nor Hate It Either).
by: Friedman, Fred T.
Published: (1984)

Online Catalog Screen Displays. A Series of Discussions. Report of a Conference Sponsored by the Council on Library Resources (Austin, Texas, March 10-13, 1985).
by: Williams, Joan Frye, Ed.
Published: (1986)

Orbit-Induced Redundancy in Finite Symbolic Systems
by: FULBER, DOUGLAS H. M.
Published: (2026)

New Consumer Online Services.
by: Collinge, Brian, et al.
Published: (1995)

Redesigning the OPAC: Moving outside the ILMS
by: Sokvitne, Lloyd O.
Published: (2006)

LibGuides: A CMS for Busy Librarians
by: Verbit, Daniel, et al.
Published: (2011)

The Lowdown on Audio Downloads
by: Farrell, Beth
Published: (2010)

Definition and Empirical Evaluation of Voters for Redundant Smart Sensor Systems
by: H. Benítez Pérez
Published: (2007)

Humanizing the Installation of Microcomputers.
by: Ansfield, Paul J.
Published: (1982)

Library Literacy. Teaching Behind the Screens: Practical Advice for a Practical World.
by: Arp, Lori, Ed., et al.
Published: (1995)

Planning Online Reference Services for the 90s.
by: Force, Ron
Published: (1994)

Bibliographic Records in an Online Environment
by: Cossham, Amanda F.
Published: (2013)

ILS Migration in the 21st Century: Some New Things to Think about This Time Around
by: Cervone, Frank
Published: (2007)

Linked Library Data Now!
by: Singer, Ross
Published: (2009)

Using HYTELNET to Access Internet Resources.
by: Scott, Peter
Published: (1992)

Using EasyNet in Libraries.
by: Still, Julie
Published: (1991)

INFeRS: Interactive Numeric Files Retrieval System. Final Report.
by: Chiang, Katherine, et al.
Published: (1991)

Simplifying Online Searching: Creating Your Own Online Information Retrieval Manuals.
by: Gillespie, Jim
Published: (1990)

Library Services and the Online Campus Gateway. Final Report.
by: Schwartz, Candy, et al.
Published: (1989)

10 Percent Wrong for 90% Done: A Practical Approach to Collection Deduping
by: Hamby, Rogan
Published: (2012)

Moving Forward: The Next-Gen Catalog and the New Discovery Tools
by: Weare, William H., Jr., et al.
Published: (2011)

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); 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.

// 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 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @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 empty

POST Data empty

Files empty

Key	Value
ui	"standard"
language	"en"
VUFIND_SESSION	"9bd2c2d59c92125cfb7e9fd781321b92"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1789345888.7461 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "9bd2c2d59c92125cfb7e9fd781321b92" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#938}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1455}
SessionHelper	Laminas\Stdlib\ArrayObject {#1782}

Server/Request Data

Key	Value
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_HTTPS	"on"
REDIRECT_SSL_TLS_SNI	"info.umar.mx"
REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
SSL_TLS_SNI	"info.umar.mx"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"ui=standard; language=en; VUFIND_SESSION=9bd2c2d59c92125cfb7e9fd781321b92"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"info.umar.mx"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.66 (Ubuntu) Server at info.umar.mx Port 443</address>\n"
SERVER_SOFTWARE	"Apache/2.4.66 (Ubuntu)"
SERVER_NAME	"info.umar.mx"
SERVER_ADDR	"200.23.222.19"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.216.61"
DOCUMENT_ROOT	"/usr/local/vufind/public"
REQUEST_SCHEME	"https"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"6686"
REDIRECT_URL	"/Record/eric_EJ948372/Similar"
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/eric_EJ948372/Similar"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1789345888.7417
REQUEST_TIME	1789345888

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Environment & details:

GET Data empty

POST Data empty

Files empty

Key	Value
ui	"standard"
language	"en"
VUFIND_SESSION	"9bd2c2d59c92125cfb7e9fd781321b92"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1789345888.7461 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "9bd2c2d59c92125cfb7e9fd781321b92" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#938}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1455}
SessionHelper	Laminas\Stdlib\ArrayObject {#1782}

Server/Request Data

Key	Value
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_HTTPS	"on"
REDIRECT_SSL_TLS_SNI	"info.umar.mx"
REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
SSL_TLS_SNI	"info.umar.mx"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"ui=standard; language=en; VUFIND_SESSION=9bd2c2d59c92125cfb7e9fd781321b92"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"info.umar.mx"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.66 (Ubuntu) Server at info.umar.mx Port 443</address>\n"
SERVER_SOFTWARE	"Apache/2.4.66 (Ubuntu)"
SERVER_NAME	"info.umar.mx"
SERVER_ADDR	"200.23.222.19"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.216.61"
DOCUMENT_ROOT	"/usr/local/vufind/public"
REQUEST_SCHEME	"https"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"6686"
REDIRECT_URL	"/Record/eric_EJ948372/Similar"
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/eric_EJ948372/Similar"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1789345888.7417
REQUEST_TIME	1789345888

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Similar Items

Similar Items

Environment & details:

Environment & details: