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234 lines
8.7 KiB
PHP
234 lines
8.7 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Core cache definitions.
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*
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* This file is part of Moodle's cache API, affectionately called MUC.
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* It contains the components that are requried in order to use caching.
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*
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* @package core
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* @category cache
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* @copyright 2012 Sam Hemelryk
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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$definitions = array(
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// Used to store processed lang files.
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// The keys used are the component of the string file.
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'string' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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'persistentmaxsize' => 3
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),
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// Used to store database meta information.
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// The database meta information includes information about tables and there columns.
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// Its keys are the table names.
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// When creating an instance of this definition you must provide the database family that is being used.
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'databasemeta' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'requireidentifiers' => array(
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'dbfamily'
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),
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'persistent' => true,
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'persistentmaxsize' => 2
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),
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// Event invalidation cache.
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// This cache is used to manage event invalidation, its keys are the event names.
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// Whenever something is invalidated it is both purged immediately and an event record created with the timestamp.
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// When a new cache is initialised all timestamps are looked at and if past data is once more invalidated.
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// Data guarantee is required in order to ensure invalidation always occurs.
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// Persistence has been turned on as normally events are used for frequently used caches and this event invalidation
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// cache will likely be used either lots or never.
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'eventinvalidation' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'persistent' => true,
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'requiredataguarantee' => true,
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'simpledata' => true,
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),
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// Cache for question definitions. This is used by the question_bank class.
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// Users probably do not need to know about this cache. They will just call
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// question_bank::load_question.
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'questiondata' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true, // The id of the question is used.
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'requiredataguarantee' => false,
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'datasource' => 'question_finder',
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'datasourcefile' => 'question/engine/bank.php',
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),
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// HTML Purifier cache
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// This caches the html purifier cleaned text. This is done because the text is usually cleaned once for every user
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// and context combo. Text caching handles caching for the combonation, this cache is responsible for caching the
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// cleaned text which is shareable.
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'htmlpurifier' => array(
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'mode' => cache_store::MODE_APPLICATION,
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),
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// Used to store data from the config + config_plugins table in the database.
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// The key used is the component:
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// - core for all core config settings
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// - plugin component for all plugin settings.
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// Persistence is used because normally several settings within a script.
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'config' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'persistent' => true,
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'simpledata' => true
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),
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// Groupings belonging to a course.
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// A simple cache designed to replace $GROUPLIB_CACHE->groupings.
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// Items are organised by course id and are essentially course records.
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'groupdata' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true, // The course id the groupings exist for.
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'simpledata' => true, // Array of stdClass objects containing only strings.
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'persistent' => true, // Likely there will be a couple of calls to this.
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'persistmaxsize' => 2, // The original cache used 1, we've increased that to two.
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),
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// Used to cache calendar subscriptions.
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'calendar_subscriptions' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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),
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// YUI Module cache.
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// This stores the YUI module metadata for Shifted YUI modules in Moodle.
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'yuimodules' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'persistent' => true,
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),
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// Cache for the list of known plugin and subplugin types - {@see get_plugin_types()}.
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// Contains two arrays of (string)pluginname => (string)location. The first array with
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// the key 0 contains locations relative to $CFG->dirroot. The second array with the
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// key 1 contains absolute paths.
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'plugintypes' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true, // 0 or 1 depending on the requested location type.
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'simpledata' => true, // Array of strings.
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'persistent' => true, // Likely there will be a couple of calls to this.
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'persistmaxsize' => 2, // Both arrays should stay loaded in memory.
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),
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// Cache for the list of installed plugins - {@see get_plugin_list()}.
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// The key consists of the plugin type string (e.g. mod, block, enrol etc).
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// The value is an associative array of plugin name => plugin location.
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'pluginlist' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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'persistentmaxsize' => 2,
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),
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// Cache used by the {@link plugininfo_base} class.
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'plugininfo_base' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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'persistentmaxsize' => 2,
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),
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// Cache used by the {@link plugininfo_mod} class.
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'plugininfo_mod' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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'persistentmaxsize' => 1,
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),
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// Cache used by the {@link plugininfo_block} class.
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'plugininfo_block' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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'persistentmaxsize' => 1,
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),
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// Cache used by the {@link plugininfo_filter} class.
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'plugininfo_filter' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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'persistentmaxsize' => 1,
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),
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// Cache used by the {@link plugininfo_repository} class.
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'plugininfo_repository' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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'persistentmaxsize' => 1,
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),
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// Cache used by the {@link plugininfo_portfolio} class.
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'plugininfo_portfolio' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'simplekeys' => true,
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'simpledata' => true,
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'persistent' => true,
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'persistentmaxsize' => 1,
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),
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// Used to store the full tree of course categories
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'coursecattree' => array(
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'mode' => cache_store::MODE_APPLICATION,
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'persistent' => true,
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'invalidationevents' => array(
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'changesincoursecat',
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)
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),
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// Used to store data for course categories visible to current user. Helps to browse list of categories
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'coursecat' => array(
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'mode' => cache_store::MODE_SESSION,
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'persistent' => true,
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'invalidationevents' => array(
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'changesincoursecat',
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'changesincourse',
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),
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'ttl' => 600,
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),
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// Used to store data for course categories visible to current user. Helps to browse list of categories
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'coursecatrecords' => array(
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'mode' => cache_store::MODE_REQUEST,
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'simplekeys' => true,
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'persistent' => true,
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'invalidationevents' => array(
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'changesincoursecat',
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),
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),
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// Used to store data for repositories to avoid repetitive DB queries within one request
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'repositories' => array(
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'mode' => cache_store::MODE_REQUEST,
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'persistent' => true,
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),
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);
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