tag:blogger.com,1999:blog-5574076.post6467934291159007017..comments2010-06-25T12:53:09.897-07:00Eduardo Jezierskihttp://www.blogger.com/profile/12759252532966274907edjez@instedd.orgBlogger5125tag:blogger.com,1999:blog-5574076.post-6006157096398157862008-10-31T12:59:00.000-07:002008-10-31T12:59:00.000-07:00Eduardo --<BR/> Met you in Durban. I have finally gotten around to looking at FeedSync and related data mesh stuff. <BR/> Have you made any progress with MySQL adapter? <BR/>I have questions about the use of data mesh for DB synchronization: <BR/> Performance -- seems like you would need to have as items (table, key, varname, value) sets, which would make for a lot of traffic. <BR/> Need for transactions -- either all updates from a single endpoint for a set of (table, key) pairs should be unconflicted or all should be conflicted. <BR/> Need for programmatic conflict resolution -- my experience with health data is that metadata propagates outward from central office while data propagates inward. Is that any help toward an algorithm?<BR/> Mesh equivalent of deadly embrace -- suppose that central is trying to change the health district to which a facility is assigned at the same time the facility is trying to report results to the district, are we fully protected by the (table, key, varname, value) item? Or do we end up with all sorts of relationship tables mediating between variables and their value lists?<BR/> Please reply to rdf4 [at] cdc [dot] gov or post here and tell me to look.<BR/>Thanks, Rogerr.friedmanhttp://www.blogger.com/profile/12639895404808912687noreply@blogger.comtag:blogger.com,1999:blog-5574076.post-77735011377772149042008-05-27T17:16:00.000-07:002008-05-27T17:16:00.000-07:00From the Sky -Hope all is well up there. Saw the link just learnt from this particular effort but heard of other related ones - has there been any progress on it? Could it benefit from yahoo's new geo-services too? The role of mesh4x is in making bridges between apps, and this could be one endpoint. are you inolved in bigearth?Eduardo Jezierskihttp://www.blogger.com/profile/12759252532966274907noreply@blogger.comtag:blogger.com,1999:blog-5574076.post-75608461427344295642008-05-27T04:26:00.000-07:002008-05-27T04:26:00.000-07:00Hi Ed,<BR/><BR/>Do you also know about this proposal ?<BR/><BR/>http://www.brightearthproject.org/?p=19From the skyhttp://www.blogger.com/profile/18417786278870950199noreply@blogger.comtag:blogger.com,1999:blog-5574076.post-74296625441712899582008-05-14T09:34:00.000-07:002008-05-14T09:34:00.000-07:00Thanks! I've never had to use Martus myself but I am familiar with many who have. What mesh4x gives is the ability to have multi-master edits, for example, you could have many Martus 'repositories' synchronized with each other, or folks working on a KML autmatically synchronizing to a secure martus server. We'll be scouting if folks would want a Martus adapter, which would allow you to sync any other application (that there is an adapter for) into it (so far we have adapters for databases, KML..). We talked with Benetech folks too some weeks ago but we hadn't started mesh4x yet back thenEduardo Jezierskihttp://www.blogger.com/profile/12759252532966274907noreply@blogger.comtag:blogger.com,1999:blog-5574076.post-87930298905524934232008-05-14T09:08:00.000-07:002008-05-14T09:08:00.000-07:00Hi,<BR/><BR/><I>"One idea could be to add data mesh capabilities to Sahana.."</I><BR/><BR/>You should look at <A HREF="http://www.martus.org/products/software.shtml" REL="nofollow">Martus</A>... It is also in the humanitarian background and they have developed their way to synchronize data.<BR/><BR/><I>Martus automatically copies and backs up bulletins that have been saved to a designated Martus Server when the computer is connected to the Internet.</I>From the skyhttp://www.blogger.com/profile/18417786278870950199noreply@blogger.com