1<?php 2/** 3 * Generic interface providing Time-To-Live constants for expirable object storage 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program; if not, write to the Free Software Foundation, Inc., 17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 18 * http://www.gnu.org/copyleft/gpl.html 19 * 20 * @file 21 * @ingroup Cache 22 */ 23 24namespace Wikimedia\LightweightObjectStore; 25 26/** 27 * Generic interface providing Time-To-Live constants for expirable object storage 28 * 29 * @ingroup Cache 30 * @since 1.35 31 */ 32interface ExpirationAwareness { 33 /** @var int One second, in seconds */ 34 public const TTL_SECOND = 1; 35 /** @var int One minute, in seconds */ 36 public const TTL_MINUTE = 60; 37 /** @var int One hour, in seconds */ 38 public const TTL_HOUR = 3600; 39 /** @var int One day, in seconds */ 40 public const TTL_DAY = 86400; // 24 * 3600 41 /** @var int One week, in seconds */ 42 public const TTL_WEEK = 604800; // 7 * 24 * 3600 43 /** @var int One month, in seconds */ 44 public const TTL_MONTH = 2592000; // 30 * 24 * 3600 45 /** @var int One year, in seconds */ 46 public const TTL_YEAR = 31536000; // 365 * 24 * 3600 47 48 /** @var int Reasonably strict cache time that last the life of quick requests */ 49 public const TTL_PROC_SHORT = 3; 50 /** @var int Loose cache time that can survive slow web requests */ 51 public const TTL_PROC_LONG = 30; 52 53 /** @var int Idiom for "store indefinitely" */ 54 public const TTL_INDEFINITE = 0; 55 /** @var int Idiom for "do not store the newly generated result" */ 56 public const TTL_UNCACHEABLE = -1; 57} 58