Microsoft`s Open Source Subsidiary Releases First Deliverable (Redis) (opens in new tab)

(eweek.com)

32 pointsks14y ago10 comments

10 comments

7 comments · 2 top-level

pragmatic14y ago· 3 in thread

This is good news, I've been waiting for the MS supported version of Redis so I can play with it on a Windows box.

I wonder why they hosted on Github vs Codeplex. Codeplex supports Mercurial, Team Foundation Server or Subversion and Git.

Microsoft recently posted the source for _parts_ of ASP.NET (minus web forms) on codeplex.

(just curious, not trying to troll.)

barranger14y ago

I'm pretty sure it's a case of Codeplex is going through a massive overhaul[1]. The addition of git support seems to be the first step.

[1] here's a preview of the new look they are moving to: http://blogs.msdn.com/b/codeplex/archive/2012/03/30/new-code...

Meai14y ago

They are trying to garner good will from the community, it's only logical that they choose whatever is most popular right now.

kijin14y ago

Redis is hosted on Github. Most users of Redis are on Github, too. So if MS wants to exchange code back and forth between their fork and the original, it makes sense to host their code on Github, too. A pull request is much more friendly than "Hey, check out my Codeplex", even if antirez decides not to merge the changes.

wickedchicken14y ago· 2 in thread

> "Redis on Linux uses an OS feature called Fork/Copy On Write. This feature is not available on Windows,

The memory-mapped file APIs on Windows are seriously lacking. Last time I dealt with them, there was no documented way to write to a constantly-growing mmaped file (unless you knew its size already). All the workarounds I tried ended in segfaults :/. Curious if anyone here has had success with that.

beagle314y ago

How do you do that on Unix / Linux?

Don't you have to set the size when you map the file?

wickedchicken14y ago

You can change the size of the allocation on the fly, and just keep writing bytes as you go. Pages aren't alloc'd on disk until they're touched. When you hit the end of the file, you call a final resize to trim off the virtual bytes at the end.

You can see an example of the technique here: http://www.gnu.org/software/libc/manual/html_node/File-Size.... (scroll to the bottom).

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