我负责一些管理许多TB图像的应用程序。我们发现在数据库中存储文件路径是最好的。

这里有几个问题:

database storage is usually more expensive than file system storage you can super-accelerate file system access with standard off the shelf products for example, many web servers use the operating system's sendfile() system call to asynchronously send a file directly from the file system to the network interface. Images stored in a database don't benefit from this optimization. things like web servers, etc, need no special coding or processing to access images in the file system databases win out where transactional integrity between the image and metadata are important. it is more complex to manage integrity between db metadata and file system data it is difficult (within the context of a web application) to guarantee data has been flushed to disk on the filesystem

我负责一些管理许多TB图像的应用程序。我们发现在数据库中存储文件路径是最好的。

这里有几个问题:

database storage is usually more expensive than file system storage you can super-accelerate file system access with standard off the shelf products for example, many web servers use the operating system's sendfile() system call to asynchronously send a file directly from the file system to the network interface. Images stored in a database don't benefit from this optimization. things like web servers, etc, need no special coding or processing to access images in the file system databases win out where transactional integrity between the image and metadata are important. it is more complex to manage integrity between db metadata and file system data it is difficult (within the context of a web application) to guarantee data has been flushed to disk on the filesystem

尝试使用SQL模拟文件系统通常是一个糟糕的计划。如果您坚持使用文件系统作为外部存储，那么最终编写的代码会更少，结果也会更好。

对于大量的小图像，数据库可能更好。

我有一个带有许多小缩略图的应用程序(每个缩略图2Kb)。当我将它们放到文件系统中时，由于文件系统的块大小，它们每个都消耗了8kb。空间增加了400% !

有关块大小的更多信息，请参阅这篇文章: iphone文件系统的块大小是多少?

没有人提到的是DB保证原子操作、事务完整性和处理并发性。对于文件系统，甚至引用完整性都不存在了——那么您如何知道您的文件名仍然是正确的呢?

如果你的文件系统中有你的图像，当你写一个新版本甚至删除文件时，有人正在读取文件-会发生什么?

我们使用blob是因为它们也更容易管理(备份、复制、传输)。他们为我们工作得很好。

你的网络服务器(我假设你正在使用)是用来处理图像的，而数据库不是。因此，我会大力投反对票。

在数据库中只存储路径(可能还有文件信息)。