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Introduction to NoSQL with Couchbase Server

Introduction to NoSQL with Couchbase Server. About the Speakers. Senior Architects @ Sela Group Authors of “Pro Couchbase Server” and others Big Data and NoSQL nerds. @ DavidOstrovsky @ YRodenski. A brief history of data. Relational Databases. Normalized A tomic C onsistent

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Introduction to NoSQL with Couchbase Server

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  1. Introduction to NoSQL with Couchbase Server #devconnections

  2. About the Speakers Senior Architects @ SelaGroup Authors of “Pro Couchbase Server” and others Big Data and NoSQL nerds @DavidOstrovsky @YRodenski #devconnections

  3. #devconnections

  4. A brief history of data #devconnections

  5. Relational Databases Normalized Atomic Consistent Isolated Durable • Vertical Scaling • Inflexible Schema #devconnections

  6. All your BASE are belong to us. • BASE • Basically Available • Soft state • Eventual consistency Welcome to the wonderful world of NoSQL!

  7. The CAP conjecture A vailability Pick Two C P artition Tolerance onsistency

  8. Documents, and objects and graphs, oh my… Graph Document Column Key-Value Memcached Couchbase Neo4j Google BigTable RavenDB GraphBase #devconnections

  9. A little history… • Couchbase Server originates from: • Membase - a distributed in-memory cache • Apache CouchDB – a document database #devconnections

  10. So what does it do? • Stores documents in JSON format • Caches documents in memory • Indexes document contents • Automatically shards data • Stores multiple replicas for resilience #devconnections

  11. When should I use it? • High performance requirements • High Throughput • Low latency • Scalability • High availability • Developer friendliness • Flexible schema • Simple CRUD and secondary indexes #devconnections

  12. get("Doc 13") Client Node 1 Node 2 Node 3 Bucket1 Bucket1 Bucket1 Cluster Map vBucket 1 vBucket 2 vBucket 3 Doc 1 Doc 7 Doc 13 Active vBucket 2 vBucket 1 Doc 7 Doc 1 Replica vBucket 3 Doc 13 #devconnections

  13. How do I connect? • Official Client SDKs: • Java, .NET, C, PHP, Python, Ruby and Node.js • Community Client SDKs: • Go, Clojure, Erland, Perl, TCL #devconnections

  14. Tables? We don’t need no tables! { "name": "John", "age": 35, "address": { "city": "New York", "street": "…" } } #devconnections

  15. Working with documents • Access documents by key • Key-based operations are very fast • Sub-millisecond responses • Documents are stored in memory, then written to disk asynchronously • Normally, documents are retrieved from the memory cache #devconnections

  16. CRUD • All operations are exposed by the Couchbase client object instance. • Add/Set:store a document in the database • Get: retrieve a document by key • Replace: update an existing document #devconnections

  17. Demo Time! Key-based operations #devconnections

  18. What about transactions? • Concurrency through Check-and-Setoperations • “CAS” value stored with each item, updated with every change • Optimistic concurrency: compare client and server CAS values • Pessimistic concurrency: lock the key exclusively for a specific session #devconnections

  19. Dude, where is my document? • In addition to keys (primary index), Couchbase supports secondary indexes, called Views. • Unlike key-based operations, which are served from memory, views are served from disk. • File system caches disk reads. #devconnections

  20. Demo Time, Again! A different view

  21. N1QL – How do you even pronounce that? • N1QL (aka “Nickel”) - an SQL-like query language for Couchbase • Expanded SQL syntax to account for nested documents, arrays, and cross-bucket joins • Currently in developer preview, coming in a future version #devconnections

  22. More Demo Time! Was that SQL I just saw? #devconnections

  23. Great, what else you got? • Cross-Datacenter Replication (XDCR) • CouchbaseLite (Mobile) • A NoSQL database for mobile apps • Can synchronize with CouchbaseServer • ElasticSearch • Use ES for querying and Couchbase for retrieval • Hadoop • Use sqoop to move data between CB and Hadoop #devconnections

  24. Use case: real-time data analytics • Couchbase: primary data store • ElasticSearch: indexes part of the data • Kibana: displays real-time analytics #devconnections

  25. So Many Demos! Everything is better with pie charts. #devconnections

  26. Summary • NoSQL brings a different and fun approach to data storage • Couchbase Server is a document database • Scalable, fast and simple to use • Ties into a whole ecosystem of big data solutions #devconnections

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