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Ask HN: Introduction to NoSQL?

• bjclark 17y ago
  There's lots of types of NoSQL dbs, where would you like to start? Are you looking for a DocumentDB or a Key/Value store or a Graph DB or a column oriented db? Do you have a preference on what language an example app or tutorial is in?
  • sjs382 17y ago
    I guess I'm just looking for an introduction to both. They can be different documents, of course, but it would be nice to have one that compares different types, too. No preference RE: language. Python or PHP would be nice but I can read Ruby as well.
• Tichy 17y ago
  CouchDB the definitive guide - a work in progress, but it's free and amusing to read: http://books.couchdb.org/relax/ http://books.couchdb.org/relax/
  • deleted 17y ago
    [deleted]
  • sjs382 17y ago
    Exactly what I was looking for. Thanks!
• thomaspaine 17y ago
  I think Redis is one of the easier NoSQL databases to pickup, because it's easy to install and is mainly just a key-value database with some bonus features. Your entire DB is stored in memory and persistence is done by asynchronous writes to disk, so it is possible that you could lose data if something were to reboot for instance, but it also means that it's really fast. Simple twitter clone with Redis: http://code.google.com/p/redis/wiki/TwitterAlikeExample http://code.google.com/p/redis/wiki/TwitterAlikeExample
  • sjs382 17y ago
    Entire thing is stored in memory? Uh oh... Haha
• figured 17y ago
  Here are a few resources for Couchdb: * an intro: http://aimee.mychores.co.uk/2008/09/07/post/320 http://aimee.mychores.co.uk/2008/09/07/post/320 * a use case: http://kore-nordmann.de/blog/couchdb_a_use_case.html http://kore-nordmann.de/blog/couchdb_a_use_case.html * CouchDB Implementation: http://horicky.blogspot.com/2008/10/couchdb-implementation.html http://horicky.blogspot.com/2008/10/couchdb-implementation.h... * joins in couchdb: http://www.cmlenz.net/archives/2007/10/couchdb-joins http://www.cmlenz.net/archives/2007/10/couchdb-joins * peepcode: http://peepcode.com/products/couchdb-with-rails http://peepcode.com/products/couchdb-with-rails
• drhowarddrfine 17y ago
  Chapter 5 of The Art of Unix Programming by esr, "Textuality". That's the reason I haven't used databases for simpler things in years.
• emileifrem 17y ago
  For the Neo4j graph database, check out: * the 10 minute code-level getting started guide: http://wiki.neo4j.org/content/Getting_Started_Guide http://wiki.neo4j.org/content/Getting_Started_Guide * a full-blown reference example, including diagrams, graph layout screen shots, code walk through etc: http://wiki.neo4j.org/content/IMDB_Example http://wiki.neo4j.org/content/IMDB_Example * the domain modeling gallery, which shows how to model a bunch of domains in a graph db: http://wiki.neo4j.org/content/Domain_Modeling_Gallery http://wiki.neo4j.org/content/Domain_Modeling_Gallery * popular blog post about how to model a social network in Neo4j: http://blog.neo4j.org/2009/09/social-networks-in-database-using-graph.html http://blog.neo4j.org/2009/09/social-networks-in-database-us... * how to work Neo4j in python, ruby, clojure, scala & grails: http://wiki.neo4j.org/content/Main_Page#Language_bindings http://wiki.neo4j.org/content/Main_Page#Language_bindings If you have more questions, feel free go all mailing list on us: https://lists.neo4j.org https://lists.neo4j.org. Hope that helps!
• dageroth 17y ago
  NoSQL is not really one specific database type, quite a lot of very different apporaches fall under the label. Starting from Key/Value Stores like redis, over documentbased structures like couchdb and Column-oriented approaches like Google's BigTable and Apaches HBase to graph-Databases like neo4j. And these aren't even all types of NoSQL approaches. Their use depends pretty much entirely on what you'd like to do. Network-Structures are naturally best suited for graphbased databases. For Scaling Issues and really fast access redis seems good (haven't used it) and if you are working on really, really large datasets Hbase combined with hadoop might be worth a look. Here is a small overview presentation: http://www.slideshare.net/chrisbaglieri/non-relational-databases-2143723 http://www.slideshare.net/chrisbaglieri/non-relational-datab...