CouchDB on iOS
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The document discusses CouchDB, a NoSQL document-based database that allows for schema-free data storage and peer-based replication for syncing. It can be used on iOS through Couchbase Lite, a lightweight version of CouchDB for mobile. While Couchbase Lite allows for working offline and syncing when online, challenges include slow advanced queries and view building on iOS which can be addressed through custom solutions. The presenters then demo CouchDB and take questions.
![What is
• NoSQL database, document-based, JSON
{
"Subject": "I like Plankton",
"Author": "Rusty",
"PostedDate": "5/23/2006",
"Tags": ["plankton", "baseball", "decisions"],
"Body": "I decided today that I don't like baseball. I like plankton."
}
Monday, 23 September, 13](https://image.slidesharecdn.com/couchdb-130923095315-phpapp01/85/CouchDB-on-iOS-4-320.jpg)
CouchDB on iOS
- 1. COUCHDB on iOS Data Syncing & Stuff Monday, 23 September, 13
- 2. Who are we? Os @djshiow Meiwin @meiwin We are the developers of ISIS app Monday, 23 September, 13
- 3. Agenda • CouchDB • What is it? • Couch DB on iOS • Couch DB in the wild • Demo • ISIS App • “Hello Couch” App Monday, 23 September, 13
- 4. What is • NoSQL database, document-based, JSON { "Subject": "I like Plankton", "Author": "Rusty", "PostedDate": "5/23/2006", "Tags": ["plankton", "baseball", "decisions"], "Body": "I decided today that I don't like baseball. I like plankton." } Monday, 23 September, 13
- 5. What is • Key Features • Schema Free • Access document by key • Views (~Index) • Peer-based replication (syncing) Monday, 23 September, 13
- 6. Peer-based replication • CouchDB can be hosted on server and client (i.e. iOS app) • Each host can work offline • Full database activity • Come back online and sync!! • Built in conflict detection Monday, 23 September, 13
- 7. Couch DB on iOS • A lightweight version of Couch DB for mobile • Small foot print, good performance • Recently changed to “Couchbase Lite” Monday, 23 September, 13
- 8. Touch DB: Benefits • Works offline & sync when online • Good for Data sync engine • No Schema : Flexibility • Fast query by “Key” Monday, 23 September, 13
- 9. Touch DB: Challenges • Slow “Advanced” queries & view building on iOS • Solution: Customize and use coredata • (A bit) harder to keep logs of who’s made changes • Solution: In document logs • New client sync from beginning • Solution: Pre-built database Monday, 23 September, 13
- 10. Couch DB in the wild • Who uses it: • Draw something • (Part of) Linked In • McGraw-Hill,Amadeus,Allrecipes.com ... • Hosting services • Cloudant (http://cloudant.com/) • Iris Couch http://www.iriscouch.com/) Monday, 23 September, 13
- 11. Demo Monday, 23 September, 13
- 12. Q&A? Monday, 23 September, 13