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VoltDB Steps Up In-Memory Analytics
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saidec16
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saidec16,
User Rank: Apprentice
6/6/2014 | 9:16:38 AM
Re: in-memory db
Hiya - here are few points based on what i've looked at from the Net:

 

1. IBM Solid DB and Oracle's tent times ten eliminate/alleviate the hotspot related to buffer management but it's still disk-based as this is easier to write, they've have add  this enhancement.

where as real in-memory row-store for high-velocity data has different design goals:

totally in-memory with  durability provided by command logging (like that of Voltdb)

replication/partioning provided that of VoltDb

concurrency approaches that are different from disk-based db like IBM, Microsoft, Oracle etc.,

 

also, i believe, Fkey is not provided and one needs to partitioin/repartition if usage changes though based on use-cases.   Also, throughput or latency is the question.  Voltd harps on throughput but Yahoo's PNUTS have a different take and provides master-master (across clusters) and uses time-line consistency.  

 

From  my perspective, in future, big-firms might catch-up assuming barries to entry diminishes from  the design engineering standpoint provided they do a rewrite and reuse parts of  code that can be reused for the  NEWSQL world.

 

Note: I'm a hands-on Solutions architect  and i happened to research more on this and VoltDb is something i'd used to compare it against other ones.  I don't   work for VoltDb nor do i endorse them.
Lorna Garey
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Lorna Garey,
User Rank: Author
1/30/2014 | 10:48:33 AM
Re: In-memory blurs lines.
Doug, Are all the in-memory offerings roughly equal in terms of the type of memory hardware they use, and thus the differentiator is the DBMS' optimization and efficiency? Or, do you see variations in the actual main memory?
D. Henschen
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D. Henschen,
User Rank: Author
1/30/2014 | 9:43:50 AM
In-memory blurs lines.
If it's in-memory technology, people tend to assume that SAP Hana is the competition, but that platform didn't come up in my discussion with VoltDB. The NewSQL camp and incumbents are largely trolling in different waters, even as press releases and PR pitches proclaim "Why Oracle and SAP are getting it wrong" -- an appeal I saw today from one NewSQL vendor.


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