Couchbase Mobile 101

Overview of Couchbase Mobile (the Couchbase Sync Gateway, and Couchbase Lite). Presented at Couchbase Connect 2015

Transcript

1. COUCHBASE MOBILE 101 Jens Alfke Couchbase, Inc.
2. ©2015 Couchbase Inc. ‹#› What Is Couchbase Mobile? ▪ Couchbase Lite ▪ Client library ▪ For mobile or desktop apps ▪ Couchbase Sync Gateway ▪ App server ▪ Front-end for Couchbase Server
3. Couchbase Lite
4. ©2015 Couchbase Inc. ‹#› Couchbase Lite ▪ Embedded database library for mobile apps ▪ Flexible, schemaless data model (“NoSQL”) ▪ Querying by map/reduce views ▪ Active change notifications, for reactive UIs ▪ Full-strength multi-master replication
5. ©2015 Couchbase Inc. ‹#› Document Data Model  Database “to-do” “doc1” “doc2” “doc3” Document “doc1” { “text”: “Vacuum kitchen”, “created”: “2015-05–28”, “check”: false, “tags”: [“jens”, “chore”] } thumb.jpg
6. ©2015 Couchbase Inc. ‹#› Document Data Model ▪ A database is a namespace for documents ▪ A document has ▪ A unique, immutable ID ▪ A JSON body containing properties ▪ Named attachments (binary, arbitrary size)
7. ©2015 Couchbase Inc. ‹#› Interesting Document Facts ▪ JSON allows nested data structures (arrays, maps) ▪ Documents don’t need to have the same structure! ▪ Different types of docs can coexist in a database ▪ “type” property is a common convention ▪ Optimistic concurrency control (MVCC)
8. ©2015 Couchbase Inc. ‹#› Map/Reduce Indexing ▪ Concept from functional programming, via Google emit(doc.created, doc.title) key value docID “2013-03-12” “taxes” “doc17” “2013-09-30” “call mom” “doc62” “2013-10-17” “cat food” “doc82” “2013-10-17” “tea bags” “doc83” “2013-10-22” “upgrade” “doc90” view index all documents map function
9. ©2015 Couchbase Inc. ‹#› Change Notifications ▪ Three types: ▪ DatabaseChanged: Any document updated ▪ DocumentChanged: A specific document updated ▪ LiveQuery: Change in query result set ▪ Enables reactive programming Controller Model (Database) GUI View User event Doc update Change notification Redraw
10. ©2015 Couchbase Inc. ‹#› Replication, or Sync ▪ Client has a replica (or a subset) of the server database ▪ Replicator transfers changed documents ▪ Multi-master ▪ Arbitrary topologies ▪ Full offline support ▪ No latency
11. Couchbase Sync Gateway
12. ©2015 Couchbase Inc. ‹#› Couchbase Sync Gateway