1. Subversion for administrators
Martin Žugec
Principal Consultant

2. ...especially the open source ones…
Developers know why…
1200 hubs, developers, 120 revisions per day…
...especially the open source ones…

3. …but why should administrators care?

4. Ehm? (without SVN)

5. We can do it better (with SVN)

6. Few examples… Backups Change tracking Documenting changes
Disaster recovery
Easier for new team members to learn

7. How much does it cost? FREE server and client
NO infrastructure needed*
First repository can be up and running in 5 minutes (demo) and is managed using familiar Windows Explorer
*for filesystem based repository and TortoiseSVN

8. Terminology 1 Repository (central database)
Working copy (local folder)
1 repository can have multiple attached working copies

9. Repository Doesn’t require server!!!
Filesystem based database (single folder)
- Apache
Svn:// - SvnServer
File:// - Regular filesystem
Doesn’t require server!!!

10. Working copy
Working copy is just a regular folder, that keeps information about the repository and stores the last revision
Subversion data are stored in “.svn” subfolders
Can point to any folder within repository

11. Terminology 2 Checkout – creating new working copy
Update – downloading changes from repository
Commit – uploading changes to repository

12. Terminology 3
Revision is increased whenever you change something. Revision number is assigned automatically and you cannot change it.
You can either specify revision number or use “HEAD” (latest)
Every WRITE operation gets revision number automatically, commits are atomic (do all or nothing)

13. Terminology Trunk, branches, tags
Trunk is never-ending line of changes
Tag is “cheap-copy” of specific trunk revision
Branch is “cheap-copy” of specific trunk revision.
Difference between Tag and Branch is that we NEVER change tag (used for release management), but we can change Branch (playground)
Trunk, Tag and Branch is just recommendation

14. How developers are using it
SVN in SVN…

15. How admins are using it Coffee at 8am Coffee at 10am After lunch
Boring meeting
Going home
January
February
March
April
May

16. Clients WebSVN – web-based view TortoiseSVN – best client for Windows
AnkhSVN – integration with Visual Studio
SVN.exe – used for scripting\automation, part of Apache package (!)
Vercue – “Outlook for Subversion”
…tons…

17. BUT!? Problems with some directory operations (rename)
Performance over HTTP
Permissions and access control limitations
Strictly folder based operations

18. Q&A