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Coherence: All content tagged as Coherence in NoSQL databases and polyglot persistence

Friday, 1 February 2013

Main Features of In-Memory Data Grids

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Good article about In-Memory Data Grids on Cubrid’s blog by Ki Sun Song.

The features of IMDG can be summarized as follows:

  • Data is distributed and stored in multiple servers.
  • Each server operates in the active mode.
  • A data model is usually object-oriented (serialized) and non-relational.
  • According to the necessity, you often need to add or reduce servers.

Even if you don’t read it all, but plan to use an IMDG solution, the first two questions you want to ask your vendor are: what the approach you are proposing to deal with the limited memory capacity and what’s the strategy for reliability. You’ll get good answers from well established products, but these answers are not necessarily the ones that provide the exact requirements your solution will need.

Original title and link: Main Features of In-Memory Data Grids (NoSQL database©myNoSQL)

via: http://www.cubrid.org/blog/dev-platform/introduction-to-in-memory-data-grid-main-features/

Monday, 3 October 2011

The Oracle NoSQL Database and Big Data Appliance

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There’s been a lot of speculation about the announcements coming from Oracle’s OpenWorld event. A first part was revealed during the keynote in the form of an in-memory analytics appliance called Exalytics [2]. But there’s talk about a Big Data Appliance and an Oracle NoSQL database.

Here’re my predictions[1]

  1. Oracle became very aggressive in selling products based on hardware, software, and services. So they’ll announce a Hadoop appliance integrated with an existing Oracle product. It could be either the Oracle Exadata or even the newly announced Exalytics.

    This appliance will place Oracle in competition with all other Hadoop appliance sellers: EMC, NetApp, IBM. Also these days most of the analytics databases try to integrate with Hadoop.

  2. Oracle already has a couple of non-relational solutions in their portfolio: BerkleyDB, TimesTen, Coherence. And they’ve already started to test the NoSQL market by announcing the MySQL and MySQL Cluster NoSQL hybrid systems.

    I don’t expect Oracle NoSQL database to be a new product. Just a rebranding or repackaging of one of the above mentioned ones. Probably the TimesTen.

  3. Oracle will invest more into integrating its line of products with Hadoop. Having both a Hadoop and an in-memory analytics appliance will make them very competitive in this space.

  4. Oracle will extend the support for NoSQLish interfaces (memcached) to its other database products.

What are your predictions?

  1. or speculations  ↩

  2. I’m currently gathering more details about Exalytics.  ↩

Original title and link: The Oracle NoSQL Database and Big Data Appliance (NoSQL database©myNoSQL)