is there any datastore-like open source db could be used outside of gae?

[saintthor]

if not, i have to consider mongodb.

[alex]

If you want to be as much compatible as possible, Riak [1] supports protobuf. Unfortunately, I haven't seen .proto files opensourced in the App Engine SVN repo.

[1] http://wiki.basho.com/Developers.html

-- alex

[timh]

There is typhoonae which is a compatible environment to appengine.   http://code.google.com/p/typhoonae/   ie compatible api as well as tasks etc...

Otherwise you probably need to look at what elements of the datastore that you actually want and have a look at the myriad of 

nosql options that match your requirements.

Wikipdeia has a rundown on various nosql systems   http://en.wikipedia.org/wiki/NoSQL 

Cheers

T

[Jeff Schnitzer]

On Sat, Jul 21, 2012 at 4:26 AM, saintthor <sain...@gmail.com> wrote:
> if not, i have to consider mongodb.

What's wrong with MongoDB?

From a high-level features-of-the-api perspective, MongoDB is
reasonably similar to the datastore. If I ever had to move an app,
it's probably where I would go.

Jeff