One SVN repository or many?

Question

If you have multiple, unrelated projects, is it a good idea to put them in the same repository?

myRepo/projectA/trunk
myRepo/projectA/tags
myRepo/projectA/br         


        

Answer 1

We use a single repository. My only concern was scale, but after seeing ASF's repository (700k revisions and counting) I was pretty convinced performance would not be an issue.

Our projects are all related, different interlocking modules which form a set of dependencies for any given app. For this reason, a single repository is ideal. You may want seperate trunk/branches/tags for each project, but you're still able to atomically commit a change across your entire codebase within a single revision. This is awesome for refactoring.