69 lines
1.2 KiB
Go
69 lines
1.2 KiB
Go
/*
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* Copyright © 2018 A Bunch Tell LLC.
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*
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* This file is part of WriteFreely.
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*
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* WriteFreely is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, included
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* in the LICENSE file in this source code package.
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*/
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package writefreely
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import (
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"sync"
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"time"
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)
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const (
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postsCacheTime = 4 * time.Second
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)
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type (
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postsCacheItem struct {
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Expire time.Time
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Posts *[]PublicPost
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ready chan struct{}
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}
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AuthCache struct {
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Alias, Pass, Token string
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BadPasses map[string]bool
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expire time.Time
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}
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)
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var (
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userPostsCache = struct {
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sync.RWMutex
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users map[int64]postsCacheItem
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}{
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users: map[int64]postsCacheItem{},
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}
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)
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func CachePosts(userID int64, p *[]PublicPost) {
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close(userPostsCache.users[userID].ready)
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userPostsCache.Lock()
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userPostsCache.users[userID] = postsCacheItem{
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Expire: time.Now().Add(postsCacheTime),
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Posts: p,
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}
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userPostsCache.Unlock()
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}
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func GetPostsCache(userID int64) *[]PublicPost {
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userPostsCache.RLock()
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pci, ok := userPostsCache.users[userID]
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userPostsCache.RUnlock()
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if !ok {
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return nil
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}
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if pci.Expire.Before(time.Now()) {
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// Cache is expired
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return nil
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}
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return pci.Posts
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}
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