Re: Database versus filesystem for storing images
От | John McCawley |
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Тема | Re: Database versus filesystem for storing images |
Дата | |
Msg-id | 459EBCFB.9040205@hardgeus.com обсуждение исходный текст |
Ответ на | Re: Database versus filesystem for storing images (James Neff <jneff@tethyshealth.com>) |
Список | pgsql-general |
My comment about stark raving madmen was somewhat tongue-in-cheek. There is certainly a case to be made for images in a database under some circumstances. However, for the average Joe web developer, and certainly someone new to the whole problem, I think storing them on the filesystem is going to be by far the most painless and efficient approach. James Neff wrote: > "... and Moses said unto them, 'The eleventh commandment : thou shalt > store images in a database!'..." > > What if you had another database where you stored just the images and > not back it up if you don't want to? > > As an application developer, I like the idea of storing files and > images in the database because it makes it much easier to control > access and security from an application standpoint. > > I think Microsoft SQL Server stores blobs in a separate file, and only > retains pointers in the actually database field for that blob. So > when you SELECT on that blob MS SQL reads the external file for you as > if it lived in the database. I don't know if Postgres does the same > thing, but if it did, you wouldn't have to worry about "bloating" > database files. > > Sounds like this is for an Apache web application. Think about how > web sites like Flickr and Webshots store their images in a database. > You could write a cool Apache mod so that the url: > "http://mycompany.com/images/01234.jpg" would go through this module, > pull the appropriate image from the database and send it back; all the > while the client is none-the-wiser. Just a thought. > > I think its one of those things where there's not right or wrong > answer. Instead you just have to do the minimum of what your > application requires. If you don't need application-level control > over the files, then by all means store them on the file system. But > if you need to control security than you have to prevent physical > access to the file (which means no file system storage) and pull the > image from the database through the application. > > My two cents, > James
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