Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * Core cache definitions.

 *

 * This file is part of Moodle's cache API, affectionately called MUC.

 * It contains the components that are requried in order to use caching.

 *

 * @package    core

 * @category   cache

 * @copyright  2012 Sam Hemelryk

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die();

$definitions = array(

    // Used to store processed lang files.

    // The keys used are the revision, lang and component of the string file.

    // The static acceleration size has been based upon student access of the site.

    'string' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 30,

        'canuselocalstore' => true,

    ),

    // Used to store cache of all available translations.

    'langmenu' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'canuselocalstore' => true,

    ),

    // Used to store database meta information.

    // The database meta information includes information about tables and there columns.

    // Its keys are the table names.

    // When creating an instance of this definition you must provide the database family that is being used.

    'databasemeta' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'requireidentifiers' => array(

            'dbfamily'

        ),

        'simpledata' => true, // This is a read only class, so leaving references in place is safe.

        'staticacceleration' => true,

        'staticaccelerationsize' => 15

    ),

    // Event invalidation cache.

    // This cache is used to manage event invalidation, its keys are the event names.

    // Whenever something is invalidated it is both purged immediately and an event record created with the timestamp.

    // When a new cache is initialised all timestamps are looked at and if past data is once more invalidated.

    // Data guarantee is required in order to ensure invalidation always occurs.

    // Persistence has been turned on as normally events are used for frequently used caches and this event invalidation

    // cache will likely be used either lots or never.

    'eventinvalidation' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'staticacceleration' => true,

        'requiredataguarantee' => true,

        'simpledata' => true,

    ),

    // Hook callbacks cache.

    // There is a static cache in hook manager, data is fetched once per page on first hook execution.

    // This cache needs to be invalidated during upgrades when code changes and when callbacks

    // overrides are updated.

    'hookcallbacks' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => false,

        // WARNING: Manual cache purge may be required when overriding hook callbacks.

        'canuselocalstore' => true,

    ),

    // Cache for question definitions. This is used by the question_bank class.

    // Users probably do not need to know about this cache. They will just call

    // question_bank::load_question.

    'questiondata' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true, // The id of the question is used.

        'requiredataguarantee' => false,

        'datasource' => 'question_finder',

        'datasourcefile' => 'question/engine/bank.php',

    ),

    // HTML Purifier cache

    // This caches the html purifier cleaned text. This is done because the text is usually cleaned once for every user

    // and context combo. Text caching handles caching for the combination, this cache is responsible for caching the

    // cleaned text which is shareable.

    'htmlpurifier' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'canuselocalstore' => true,

    ),

    // Used to store data from the config + config_plugins table in the database.

    // The key used is the component:

    //   - core for all core config settings

    //   - plugin component for all plugin settings.

    // Persistence is used because normally several settings within a script.

    'config' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'staticacceleration' => true,

        'simpledata' => true

    ),

    // Groupings belonging to a course.

    // A simple cache designed to replace $GROUPLIB_CACHE->groupings.

    // Items are organised by course id and are essentially course records.

    'groupdata' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true, // The course id the groupings exist for.

        'simpledata' => true, // Array of stdClass objects containing only strings.

        'staticacceleration' => true, // Likely there will be a couple of calls to this.

        'staticaccelerationsize' => 2, // The original cache used 1, we've increased that to two.

    ),

    // Whether a course currently has hidden groups.

    'coursehiddengroups' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true, // The course id the groupings exist for.

        'simpledata' => true, // Booleans.

        'staticacceleration' => true, // Likely there will be a couple of calls to this.

    ),

    // Used to cache calendar subscriptions.

    'calendar_subscriptions' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

    ),

    // Cache the course categories where the user has any enrolment and all categories that this user can manage.

    'calendar_categories' => array(

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true,

        'invalidationevents' => array(

            'changesincoursecat',

            'changesincategoryenrolment',

        ),

        'ttl' => 900,

    ),

    // Cache the capabilities list DB table. See get_all_capabilities and get_deprecated_capability_info in accesslib.

    'capabilities' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 2, // Should be main capabilities and deprecated capabilities.

        'ttl' => 3600, // Just in case.

    ),

    // YUI Module cache.

    // This stores the YUI module metadata for Shifted YUI modules in Moodle.

    'yuimodules' => array(

        'mode' => cache_store::MODE_APPLICATION,

    ),

    // Cache for the list of event observers.

    'observers' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 2,

    ),

    // Cache used by the {@link core_plugin_manager} class.

    // NOTE: this must be a shared cache.

    'plugin_manager' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

    ),

    // Used to store the full tree of course categories.

    'coursecattree' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'staticacceleration' => true,

        'invalidationevents' => array(

            'changesincoursecat',

        )

    ),

    // Used to store data for course categories visible to current user. Helps to browse list of categories.

    'coursecat' => array(

        'mode' => cache_store::MODE_SESSION,

        'invalidationevents' => array(

            'changesincoursecat',

            'changesincourse',

        ),

        'ttl' => 600,

    ),

    // Used to store data for course categories visible to current user. Helps to browse list of categories.

    'coursecatrecords' => array(

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'invalidationevents' => array(

            'changesincoursecat',

        ),

    ),

    // Used to store state of sections in course (collapsed or not).

    'coursesectionspreferences' => [

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'simpledata' => false,

        'staticacceleration' => true,

    ],

    // Cache course contacts for the courses.

    'coursecontacts' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'staticacceleration' => true,

        'simplekeys' => true,

        'ttl' => 3600,

    ),

    // Course reactive state cache.

    'courseeditorstate' => [

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true,

        'invalidationevents' => [

            'changesincoursestate',

        ],

    ],

    // Course actions instances cache.

    'courseactionsinstances' => [

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'simpledata' => false,

        'staticacceleration' => true,

        // Executing actions in more than 10 courses usually means executing the same action on each course

        // so there is no need for caching individual course instances.

        'staticaccelerationsize' => 10,

    ],

    // Used to store data for repositories to avoid repetitive DB queries within one request.

    'repositories' => array(

        'mode' => cache_store::MODE_REQUEST,

    ),

    // Used to store external badges.

    'externalbadges' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'ttl' => 3600,

    ),

    // Accumulated information about course modules and sections used to print course view page (user-independent).

    // Used in functions:

    // - course_modinfo::build_course_section_cache()

    // - course_modinfo::inner_build_course_cache()

    // - get_array_of_activities()

    // Reset/update in functions:

    // - rebuild_course_cache()

    // - course_modinfo::purge_module_cache()

    // - course_modinfo::purge_section_cache()

    // - remove_course_contents().

    'coursemodinfo' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'canuselocalstore' => true,

        'requirelockingbeforewrite' => true

    ),

    // This is the session user selections cache.

    // It's a special cache that is used to record user selections that should persist for the lifetime of the session.

    // Things such as which categories the user has expanded can be stored here.

    // It uses simple keys and simple data, please ensure all uses conform to those two constraints.

    'userselections' => array(

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true

    ),

    // Used to cache activity completion status.

    'completion' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'ttl' => 3600,

        'staticacceleration' => true,

        'staticaccelerationsize' => 2, // Should be current course and site course.

    ),

    // Used to cache course completion status.

    'coursecompletion' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'ttl' => 3600,

        'staticacceleration' => true,

        'staticaccelerationsize' => 30, // Will be users list of current courses in nav.

    ),

    // A simple cache that stores whether a user can expand a course in the navigation.

    // The key is the course ID and the value will either be 1 or 0 (cast to bool).

    // The cache isn't always up to date, it should only ever be used to save a costly call to

    // can_access_course on the first page request a user makes.

    'navigation_expandcourse' => array(

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true

    ),

    // Caches suspended userids by course.

    // The key is the courseid, the value is an array of user ids.

    'suspended_userids' => array(

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'simpledata' => true,

    ),

    // Cache system-wide role definitions.

    'roledefs' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 30,

    ),

    // Caches plugins existing functions by function name and file.

    // Set static acceleration size to 5 to load a few functions.

    'plugin_functions' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'canuselocalstore' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 5

    ),

    // Caches data about tag collections and areas.

    'tags' => array(

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'staticacceleration' => true,

    ),

    // Grade categories. Stored at session level as invalidation is very aggressive.

    'grade_categories' => array(

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'invalidationevents' => array(

            'changesingradecategories',

        )

    ),

    // Store temporary tables information.

    'temp_tables' => array(

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'simpledata' => true

    ),

    // Caches tag index builder results.

    'tagindexbuilder' => array(

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simplevalues' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 10,

        'ttl' => 900, // 15 minutes.

        'invalidationevents' => array(

            'resettagindexbuilder',

        ),

    ),

    // Caches contexts with insights.

    'contextwithinsights' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 1

    ),

    // Caches message processors.

    'message_processors_enabled' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 3

    ),

    // Caches the time of the last message in a conversation.

    'message_time_last_message_between_users' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true, // The conversation id is used.

        'simplevalues' => true,

        'datasource' => '\core_message\time_last_message_between_users',

    ),

    // Caches font awesome icons.

    'fontawesomeiconmapping' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'staticaccelerationsize' => 1

    ),

    // Caches processed CSS.

    'postprocessedcss' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => false,

    ),

    // Caches grouping and group ids of a user.

    'user_group_groupings' => array(

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

    ),

    // This is the user's pre sign-up session cache.

    // This cache is used to record the user's pre sign-up data such as

    // age of digital consent (minor) status, accepted policies, etc.

    'presignup' => array(

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true,

        'ttl' => 1800

    ),

    // Caches the first time we analysed models' analysables.

    'modelfirstanalyses' => array(

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'simpledata' => true,

    ),

    // Cache the list of portfolio instances for the logged in user

    // in the portfolio_add_button constructor to avoid loading the

    // same data multiple times.

    'portfolio_add_button_portfolio_instances' => [

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'staticacceleration' => true

    ],

    // Cache the user dates for courses set to relative dates mode.

    'course_user_dates' => [

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true

    ],

    // Information generated during the calculation of indicators.

    'calculablesinfo' => [

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => false,

        'simpledata' => false,

    ],

    // The list of content items (activities, resources and their subtypes) that can be added to a course for a user.

    'user_course_content_items' => [

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

    ],

    // The list of favourited content items (activities, resources and their subtypes) for a user.

    'user_favourite_course_content_items' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

    ],

    \core_course\local\service\content_item_service::RECOMMENDATION_CACHE => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

    ],

    // Caches contentbank extensions management.

    'contentbank_enabled_extensions' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

    ],

    'contentbank_context_extensions' => [

        'mode' => cache_store::MODE_REQUEST,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

    ],

    // Language strings for H5P content-type libraries.

    // Key "{$libraryname}/{$language}"" contains translations for a given library and language.

    // Key "$libraryname" has a list of all of the available languages for the library.

    'h5p_content_type_translations' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simpledata' => true,

    ],

    // File cache for H5P Library ids.

    'h5p_libraries' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'canuselocalstore' => true

    ],

    // File cache for H5P Library files.

    'h5p_library_files' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'canuselocalstore' => true

    ],

    // Cache the grade letters for faster retrival.

    'grade_letters' => [

        'mode'                   => cache_store::MODE_REQUEST,

        'simplekeys'             => true,

        'staticacceleration'     => true,

        'staticaccelerationsize' => 100

    ],

    // Cache for licenses.

    'license' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => false,

    ],

    // Cache the grade setting for faster retrieval.

    'gradesetting' => [

        'mode'                   => cache_store::MODE_REQUEST,

        'simplekeys'             => true,

        'staticacceleration'     => true,

        'staticaccelerationsize' => 100

    ],

    // Course image cache.

    'course_image' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'datasource' => '\core_course\cache\course_image',

    ],

    // Cache the course categories where the user has access the content bank.

    'contentbank_allowed_categories' => [

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true,

        'invalidationevents' => [

            'changesincoursecat',

            'changesincategoryenrolment',

        ],

    ],

    // Cache the courses where the user has access the content bank.

    'contentbank_allowed_courses' => [

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true,

        'invalidationevents' => [

            'changesincoursecat',

            'changesincategoryenrolment',

            'changesincourse',

        ],

    ],

    // Users allowed reports according to audience.

    'reportbuilder_allowed_reports' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'ttl' => 1800,

    ],

    // Cache image dimensions.

    'file_imageinfo' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

        'canuselocalstore' => true,

        'staticaccelerationsize' => 100,

    ],

    // Cache if a user has the capability to share to MoodleNet.

    'moodlenet_usercanshare' => [

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true,

        'ttl' => 1800,

        'invalidationevents' => [

            'changesincoursecat',

            'changesincategoryenrolment',

            'changesincourse',

        ],

    ],

    // A theme has been used in context to override the default theme.

    // Applies to user, cohort, category and course.

    'theme_usedincontext' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'staticacceleration' => true,

    ],

    'routes' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true,

        'simpledata' => true,

        'canuselocalstore' => true,

    ],

    // Cache to store user AI policy acceptance status.

    'ai_policy' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true, // Cache must use simple keys (a-zA-Z0-9_).

        'simpledata' => true, // Cache stores integer values which are simple data.

        'staticacceleration' => true,

        'datasource' => \core_ai\cache\policy::class,

        'canuselocalstore' => true,

    ],

    // Cache to store AI rate limits.

    // Used by AI provider plugins to limit the number of requests to external services.

    'ai_ratelimit' => [

        'mode' => cache_store::MODE_APPLICATION,

        'simplekeys' => true, // Cache must use simple keys (a-zA-Z0-9_).

        'simpledata' => true, // Cache stores integer values which are simple data.

        'staticacceleration' => true,

    ],

    // The navigation_cache class used this cache to store the navigation nodes.

    'navigation_cache' => [

        'mode' => cache_store::MODE_SESSION,

        'simplekeys' => true,

        'simpledata' => true,

        'ttl' => 1800,

    ],

);