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