rescrv - Slashdot User

Comment Re:multidimensional hash, no point (Score 1) 164

by rescrv on Wednesday February 22, 2012 @03:37PM (#39128659) Attached to: Is It Time For NoSQL 2.0?

When keys are concatenated with a joining symbol, objects can only be retrieved when one posesses all of the joining keys. Hyperspace hashing allows object retrieval when only a subset of the attributes are available.

Comment Re:i was all excited... (Score 2) 164

by rescrv on Wednesday February 22, 2012 @03:27PM (#39128517) Attached to: Is It Time For NoSQL 2.0?

Although the coordinator is logically centralized, we've got a version in the works that uses Paxos (a consensus algorithm) to distribute the coordinator as well. For more information check out http://openreplica.org/

Submission + - Microsoft Files Antitrust Complaint Against Motorola (techweekeurope.co.uk)

Submitted by

judgecorp

on Wednesday February 22, 2012 @01:09PM

judgecorp writes: "Microsoft has filed a complaint with the European Commission complaining that Motorola Mobility is charging too much for use of its patented technology in phones and tablets. The complaint follows a similar one by Apple last week, and will need to be rewolved by Google as it takes charge of Motorola Mobility"

Comment Re:Sounds promising. (Score 1) 2

by rescrv on Tuesday February 21, 2012 @01:47PM (#39113391) Attached to: NoSQL 2.0: Expanded Interface, Higher Performance

Actually, HyperDex is strongly consistent. A GET will *always* see the most recent PUT. There is no "eventually" in HyperDex. HyperDex's speed advantage stems from a unique, efficient design and a streamlined implementation.

Submission + - Is it time for NoSQL 2.0? 1

Submitted by rescrv on Monday February 20, 2012 @02:25PM

rescrv writes: Key-value stores (like Cassandra, Redis and DynamoDB) have been replacing traditional databases in many demanding web applications (e.g. Twitter, Google, Facebook, LinkedIn and others). But for the most part, the differences between existing NoSQL systems come down to the choice of well-studied implementation techniques; in particular, they all provide a similar API that achieves high performance and scalability by limiting applications to simple operations like GET and PUT. HyperDex, a new key-value store developed at Cornell, stands out in the NoSQL spectrum with its unique design. HyperDex employs a unique multi-dimensional hash function to enable efficient search operations — that is, objects may be retrieved without using the key under which they are stored. Other systems employ indexing techniques to enable search, or enumerate all objects in the system. In contrast, HyperDex's design enables applications to retrieve search results directly from servers in the system. The results are impressive. Preliminary benchmark results on the project website show that HyperDex provides significant performance improvements over Cassandra and MongoDB. With its unique design, and impressive performance, it seems fittng to ask: Is HyperDex the start of NoSQL 2.0?

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