http://fitc.ca/presentation/mobile-offline-data-synchronization-in-angularjs/
watch ppt firest,
http://www.youtube.com/watch?v=6ecuA-pOev0&feature=youtu.be&t=14m9s
then see this youtube, begin time:14:45 start demo
v6 time:29:17 CouchDB online synchronization to CouchDB
time: 31:26 have ios emu
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Sync multiple AngularJS apps without server via PouchDB
http://www.mircozeiss.com/sync-multiple-angularjs-apps-without-server-via-pouchdb/
http://www.youtube.com/watch?v=QSC1fnfUlU0
this easy simple to try sync
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Building offline applications with AngularJS and PouchDB 13 Jun 2013
http://www.mircozeiss.com/building-offline-applications-with-angularjs-and-pouchdb/
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A standalone REST interface server for PouchDB.
https://github.com/pouchdb/pouchdb-server
-----Couchbase Lite
Couchbase Sync Gateway
http://www.couchbase.com/mobile#sync-gateway
Install on premise
http://www.couchbase.com/download#cb-mobile
Install on Amazon Web Services
https://aws.amazon.com/marketplace/seller-profile/ref=dtl_pcp_sold_by?ie=UTF8&id=1a064a14-5ac2-4980-9167-15746aabde72
Couchbase vs. Apache CouchDB :: A comparison of two open source NoSQL database technologies
http://www.couchbase.com/couchbase-vs-couchdb
Couchbase Server for ubuntu free download V2.5.1 Released March 31, 2014
http://www.couchbase.com/couchbase-server/overview
如果是自建，還真的這個比較適當。
中文相關 http://hhtucode.blogspot.com/search/label/Couchbase
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Build always-available apps that work both online & offline.
http://developer.couchbase.com/mobile/
1. Couchbase Server：JSON database 放資料(db)server
2. Sync Gateway：synchronize on-device Couchbase Lite - Couchbase Sever，and Authentication, Access Control, Validation
3. Couchbase lite: on-device JSON database, full function (sync), all platom
Downloads for both community and enterprise editions are free. Support and updates are different between them, and not necessarily free.
所以是全部免費，除了支援...要付錢，那基本上採用這架構是沒問題的了！！
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***couchbase-sync-gateway 深入簡報
http://www.slideshare.net/Couchbase/webinar-couchbase-mobile-sync-gateway-configuration-and-management-webinar-mobile-advanced-couchbase-sync-gateway1
記得裝完後，用config檔啟動，補上這個設定：
"adminInterface":":4985",
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Setting up couchbase-sync-gateway (1.0.2-9) ...
You have successfully installed Couchbase Sync Gateway.
You can start Couchbase Sync Gateway by using the following command:
/opt/couchbase-sync-gateway/bin/sync_gateway
That's it! This command starts Sync Gateway on port 4984, connects to a limited in-memory database
that lives on Sync Gateway called "walrus", and starts the admin server on port 4985.
The command-line options are:
-adminInterface=":4985": Address to bind admin interface to
-bucket="sync_gateway": Name of bucket
-dbname="": Name of CouchDB database (defaults to name of bucket)
-interface=":4984": Address to bind to
-log="": Log keywords, comma separated
-personaOrigin="": Base URL that clients use to connect to the server
-pool="default": Name of pool
-pretty=false: Pretty-print JSON responses
-url="walrus:": Address of Couchbase server
-verbose=false: Log more info about requests
By using this software you agree to the End User License Agreement.
See /opt/couchbase-sync-gateway/LICENSE.txt.