Increase photo rail cache ttl

src/redis_cache.nim

@@ -85,7 +85,7 @@ proc cache*(data: List) {.async.} =
   await setEx(data.listKey, listCacheTime, compress(toFlatty(data)))
 
 proc cache*(data: PhotoRail; name: string) {.async.} =
-  await setEx("pr:" & toLower(name), baseCacheTime, compress(toFlatty(data)))
+  await setEx("pr:" & toLower(name), baseCacheTime * 2, compress(toFlatty(data)))
 
 proc cache*(data: User) {.async.} =
   if data.username.len == 0: return