From: Diogo Franco (Kovensky) <diogomfranco@gmail.com>
Date: Tue, 16 Jul 2013 17:05:13 +0000 (-0300)
Subject: anidb: Cache finished anime for longer
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=12bc642de5d56f06e203324bc9570b9f3a848965;p=go-anidb.git

anidb: Cache finished anime for longer

Once they've finished airing, it's more unlikely they'll get updates. We
only consider they as finished if they were cached more than one
AnimeCacheDuration after the end though.
---

diff --git a/animecache.go b/animecache.go
index fd2d7f3..25624fb 100644
--- a/animecache.go
+++ b/animecache.go
@@ -26,10 +26,17 @@ func (a *Anime) IsStale() bool {
 	if a == nil {
 		return true
 	}
+	now := time.Now()
+	diff := now.Sub(a.Cached)
 	if a.Incomplete {
-		return time.Now().Sub(a.Cached) > AnimeIncompleteCacheDuration
+		return diff > AnimeIncompleteCacheDuration
 	}
-	return time.Now().Sub(a.Cached) > AnimeCacheDuration
+
+	// If the anime ended, and more than AnimeCacheDuration time ago at that
+	if !a.EndDate.IsZero() && now.After(a.EndDate.Add(AnimeCacheDuration)) {
+		return diff > FinishedAnimeCacheDuration
+	}
+	return diff > AnimeCacheDuration
 }
 
 // Unique Anime IDentifier.
diff --git a/misc.go b/misc.go
index 22a010c..b6d9db8 100644
--- a/misc.go
+++ b/misc.go
@@ -15,6 +15,10 @@ var (
 	GroupCacheDuration   = 4 * DefaultCacheDuration // They don't change that often.
 	FileCacheDuration    = 8 * DefaultCacheDuration // These change even less often.
 
+	// Used for anime that have already finished airing.
+	// It's unlikely that they get any important updates.
+	FinishedAnimeCacheDuration = 4 * AnimeCacheDuration
+
 	// Used when a request uses a non-existing key (AID, ed2k+size, etc)
 	InvalidKeyCacheDuration = 1 * time.Hour