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Add cache middleware to most /libraries get requests

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This commit is contained in:
mikiher 2023-11-22 18:40:42 +02:00
parent 4299627f5f
commit 107b4b83c1
2 changed files with 42 additions and 37 deletions
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59
server/managers/ApiCacheManager
View File

@ -1,42 +1,47 @@
const { LRUCache } = require('lru-cache')
const Logger = require('../Logger')
const { measure } = require('../utils/timing')
const Database = require('../Database')
class ApiCacheManager {
constructor() {
this.options = {
max: 1000,
maxSize: 10 * 1000 * 1000,
sizeCalculation: item => item.length,
}
constructor(options = { max: 1000, maxSize: 10 * 1000 * 1000, sizeCalculation: item => item.length }) {
this.options = options
}
init() {
init(database = Database) {
this.cache = new LRUCache(this.options)
let hooks = ['afterCreate', 'afterUpdate', 'afterDestroy', 'afterBulkCreate', 'afterBulkUpdate', 'afterBulkDestroy']
hooks.forEach(hook => database.sequelize.addHook(hook, (model) => this.clear(model, hook)))
}
clear(model, hook) {
Logger.debug(`[ApiCacheManager] ${model.constructor.name}.${hook}: Clearing cache`)
this.cache.clear()
}
get middleware() {
return (req, res, next) => {
measure('ApiCacheManager.middleware', () => {
const key = req.originalUrl || req.url
Logger.debug(`[ApiCacheManager] Cache key: ${key}`)
Logger.debug(`[ApiCacheManager] Cache: ${this.cache} count: ${this.cache.size} size: ${this.cache.calculatedSize}`)
const cached = this.cache.get(key)
if (cached) {
Logger.debug(`[ApiCacheManager] Cache hit: ${key}`)
res.send(cached)
return
const key = { user: req.user.username, url: req.url }
const stringifiedKey = JSON.stringify(key)
Logger.debug(`[ApiCacheManager] count: ${this.cache.size} size: ${this.cache.calculatedSize}`)
Logger.debug(`[ApiCacheManager] Cache key: ${stringifiedKey}`)
const cached = this.cache.get(stringifiedKey)
if (cached) {
Logger.debug(`[ApiCacheManager] Cache hit: ${stringifiedKey}`)
res.send(cached)
return
}
res.sendResponse = res.send
res.send = (body) => {
Logger.debug(`[ApiCacheManager] Cache miss: ${stringifiedKey}`)
if (key.url.search(/^\/libraries\/.*?\/personalized/) !== -1) {
Logger.debug(`[ApiCacheManager] Caching personalized with 30 minues TTL`)
this.cache.set(stringifiedKey, body, { ttl: 30 * 60 * 1000 })
} else {
this.cache.set(stringifiedKey, body)
}
res.sendResponse = res.send
res.send = (body) => {
Logger.debug(`[ApiCacheManager] Cache miss: ${key}`)
measure('ApiCacheManager.middleware: res.send', () => {
this.cache.set(key, body)
res.sendResponse(body)
})
}
next()
})
res.sendResponse(body)
}
next()
}
}
}

20
server/routers/ApiRouter.js
View File

@ -68,20 +68,20 @@ class ApiRouter {
this.router.get('/libraries/:id/items', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getLibraryItems.bind(this))
this.router.delete('/libraries/:id/issues', LibraryController.middleware.bind(this), LibraryController.removeLibraryItemsWithIssues.bind(this))
this.router.get('/libraries/:id/episode-downloads', LibraryController.middleware.bind(this), LibraryController.getEpisodeDownloadQueue.bind(this))
this.router.get('/libraries/:id/series', LibraryController.middleware.bind(this), LibraryController.getAllSeriesForLibrary.bind(this))
this.router.get('/libraries/:id/episode-downloads', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getEpisodeDownloadQueue.bind(this))
this.router.get('/libraries/:id/series', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getAllSeriesForLibrary.bind(this))
this.router.get('/libraries/:id/series/:seriesId', LibraryController.middleware.bind(this), LibraryController.getSeriesForLibrary.bind(this))
this.router.get('/libraries/:id/collections', LibraryController.middleware.bind(this), LibraryController.getCollectionsForLibrary.bind(this))
this.router.get('/libraries/:id/playlists', LibraryController.middleware.bind(this), LibraryController.getUserPlaylistsForLibrary.bind(this))
this.router.get('/libraries/:id/personalized', LibraryController.middleware.bind(this), LibraryController.getUserPersonalizedShelves.bind(this))
this.router.get('/libraries/:id/filterdata', LibraryController.middleware.bind(this), LibraryController.getLibraryFilterData.bind(this))
this.router.get('/libraries/:id/search', LibraryController.middleware.bind(this), LibraryController.search.bind(this))
this.router.get('/libraries/:id/collections', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getCollectionsForLibrary.bind(this))
this.router.get('/libraries/:id/playlists', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getUserPlaylistsForLibrary.bind(this))
this.router.get('/libraries/:id/personalized', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getUserPersonalizedShelves.bind(this))
this.router.get('/libraries/:id/filterdata', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getLibraryFilterData.bind(this))
this.router.get('/libraries/:id/search', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.search.bind(this))
this.router.get('/libraries/:id/stats', LibraryController.middleware.bind(this), LibraryController.stats.bind(this))
this.router.get('/libraries/:id/authors', LibraryController.middleware.bind(this), LibraryController.getAuthors.bind(this))
this.router.get('/libraries/:id/narrators', LibraryController.middleware.bind(this), LibraryController.getNarrators.bind(this))
this.router.get('/libraries/:id/authors', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getAuthors.bind(this))
this.router.get('/libraries/:id/narrators', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.getNarrators.bind(this))
this.router.patch('/libraries/:id/narrators/:narratorId', LibraryController.middleware.bind(this), LibraryController.updateNarrator.bind(this))
this.router.delete('/libraries/:id/narrators/:narratorId', LibraryController.middleware.bind(this), LibraryController.removeNarrator.bind(this))
this.router.get('/libraries/:id/matchall', LibraryController.middleware.bind(this), LibraryController.matchAll.bind(this))
this.router.get('/libraries/:id/matchall', LibraryController.middleware.bind(this), cacheMiddleware, LibraryController.matchAll.bind(this))
this.router.post('/libraries/:id/scan', LibraryController.middleware.bind(this), LibraryController.scan.bind(this))
this.router.get('/libraries/:id/recent-episodes', LibraryController.middleware.bind(this), LibraryController.getRecentEpisodes.bind(this))
this.router.get('/libraries/:id/opml', LibraryController.middleware.bind(this), LibraryController.getOPMLFile.bind(this))