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SynchronizeTip

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There seems to be dozens of ways to keep stuff in 2 places synchronized. Is there a better place than here to share tips on how to do it?

A brief overview of the many kinds of “stuff” that is helpful to synchronize:

(1) In theory there’s a little battery on the motherboard that keeps the clock ticking when the power goes out. In practice, that battery is drained after 3 or so years, and it’s less hassle to install nttp software than to pop it open and replace the battery (or to change the date from 1970 every time I unplug it).

Keeping multiple Macs in sync article by Ethan Marcotte.



“Linux on the Road: Data Transport Between Different Machines (Synchronization)” mentions:


Meatball:BackupAndRestore


backup tools

“Disk-Based Backup & Recovery: Making Sense of Your Options” http://whitepapers.zdnet.com/abstract.aspx?docid=160631&promo=100503

“Keith Lofstrom’s disk-to-disk backup page” http://keithl.com/linuxbackup.html which links to “Dirvish is a fast, disk based, rotating network backup system.” http://dirvish.org/

“Subversion in my ~/Home” http://theadmin.org/articles/2006/04/05/subversion-in-my-home “Today I finished importing my home directory into Subversion. I did this because I needed an easy way to keep files in sync between my desktop and laptop and rsync was not cutting it.”

rsync

might be useful for keeping various fault-tolerant wiki servers synchronized … rsync http://samba.anu.edu.au/rsync/

consider emailing about “distributed wiki”, fault-tolerant data storage, etc. Andrew Tridgell http://samba.org/~tridge/ “I am interested in speech recognition, hidden Markov models, recurrent neural networks, parallel sorting, parallel searching, parallel filesystems, parallel operating systems, learning algorithms and networking protocols. If you are interested in the rsync algorithm then you may find my thesis useful.”

to read: perhaps it will help my distributed fault-tolerant data store Efficient Algorithms for Sorting and Synchronization thesis by Andrew Tridgell (describes rsync)

"Easy Automated Snapshot-Style Backups with Linux and Rsync"

mirrordir

What is the difference between “mirrordir” and “rsync” ?

distributed file systems

Bazil http://bazil.org/ https://github.com/bazillion/fuse “Bazil is a distributed file system designed for single-person disconnected operation. It lets you share your files across all your computers, with or without cloud services. … because Bazil keeps track of the changes, it can … synchronize them between the different peers; no more confusion about what copy is the latest.”

http://linas.org/theory/eternity.html “backup is tedious.” and many other good ideas for a distributed file system. “LAN-based RAID” … links to http://onionnetworks.com/products/ and “The Eternity Service” by Ross J. Anderson http://www.cl.cam.ac.uk/users/rja14/eternity/eternity.html … and “The XenoService? is a network of web hosts that can respond to an attack on a site by replicating it rapidly and widely.” http://www.cl.cam.ac.uk/~rja14/#Peer-to-Peer

http://en.wikipedia.org/wiki/Chord_project

“Voxnet is a java application designed to allow for the flow of uncensored encrypted information over the internet.” http://sourceforge.net/projects/voxnet/

“MUTE is a secure, anonymous, distributed communications framework. Node-to-node connections are encrypted, and messages are routed using an ant-inspired algorithm. The first MUTE-based app supports anonymous file sharing.” http://sourceforge.net/projects/mute-net/

Wikipedia:Gnutella “after a few days, the protocol had been reverse engineered, and compatible open-source clones began to appear. This parallel development of different clients by different groups remains the modus operandi of Gnutella development today.

The Gnutella network is a fully distributed alternative to such semi-centralized systems as FastTrack? (KaZaA?) and such centralized systems as Napster.”

Wikipedia:Gnutella2

would this be a good place to discuss a fault tolerant wiki ? Gnutella Protocol Development the Gnutella Protocol Development wiki http://the-gdf.org/ http://www.the-gdf.org/index.php?title=Main_Page

“I2P.net and GNUnet.org and was reminded of MUTE-net.sf.net “ – recc. http://www.communitywiki.org/en/WikiFromScratchDiscussion

http://en.wikipedia.org/wiki/List_of_file_systems#Distributed_parallel_fault_tolerant_file_systems

http://freenetproject.org/ http://wiki.freenetproject.org/ http://wikiserver.freenethelp.org:14741/

"Availl Wide Area File Services (WAFS) software allows branch office users to access and share files over the WAN at LAN speeds. Its real-time multi-directional acceleration and mirroring technology ensures that the same data exists on all servers regardless of where changes occur.” sounds very similar to what I want.


“Entropy is a decentralized, peer-to-peer communication network designed to be resistant to censorship … It pools the contributed bandwidth and storage space of member computers … Entropy is designed to be compatible with the similar Freenet system.” http://en.wikipedia.org/wiki/Entropy_%28anonymous_data_store%29 uses the http://en.wikipedia.org/wiki/McEliece_cryptosystem


“Lotus Notes … It is typical to see one Notes “application” spanning 22+ servers, and users using this application globally. Changes are then replicated between all databases seamlessly, and asynchronously. It’ll work on a WAN, it’ll work on a modem, and it’ll work on the end of a satellite link. … Interestingly (from a developers perspective), the application code is actually compiled into the database itself, and replicates around. So as long as you have a client, you can play. … calendar, mirroring/multiple servers, offline capability … Domino (the server) and the Notes architecture in general may have accumulated a lot of cruft over the years, but it is an awesomely flexible and robust piece of work. You could implement a wiki in any number of languages on the Notes platform…” – Wiki:WikiWikiVsLotusNotes


Define external redirect: TortoiseSVN KaZaA FastTrack grammar check XenoService MultiSync InterMezzo

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