high_scalability high_scalability-2012 high_scalability-2012-1180 knowledge-graph by maker-knowledge-mining

1180 high scalability-2012-01-24-The State of NoSQL in 2012


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Introduction: This is a guest post by Siddharth Anand , a senior member of LinkedIn's Distributed Data Systems team.  Preamble Ramble If you’ve been working in the online (e.g. internet) space over the past 3 years, you are no stranger to terms like “the cloud” and “NoSQL”. In 2007, Amazon published a paper on Dynamo . The paper detailed how Dynamo, employing a collection of techniques to solve several problems in fault-tolerance, provided a resilient solution to the on-line shopping cart problem. A few years go by while engineers at AWS toil in relative obscurity at standing up their public cloud. It’s December 2008 and I am a member of Netflix’s Software Infrastructure team. We’ve just been told that there is something called the “CAP theorem” and because of it, we are to abandon our datacenter in hopes of leveraging Cloud Computing. Huh? A month into the investigation, we start wondering about our Oracle database. How are we are going to move it into the cloud? That’s when we are


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2 We’ve just been told that there is something called the “CAP theorem” and because of it, we are to abandon our datacenter in hopes of leveraging Cloud Computing. [sent-9, score-0.329]

3 That’s when we are told that we are to abandon our RDBMS too. [sent-13, score-0.21]

4 Fast forward to the end of 2011: the past 3 years have been an amazing ride. [sent-18, score-0.174]

5 Fast forward to today: I’ve completed my first month at LinkedIn. [sent-22, score-0.157]

6 I’ve spent this month getting familiar with the various NoSQL systems that LinkedIn has built in-house. [sent-23, score-0.186]

7 These include Voldemort (another Dynamo-based system), Krati (a single-machine data store), Espresso (a new system being actively developed), etc… LinkedIn is now facing similar challenges to the Netflix of 3 years ago. [sent-24, score-0.297]

8 public cloud question for the time-being, what would I pick today regarding a NoSQL alternative to Oracle? [sent-28, score-0.148]

9 LinkedIn’s support of Voldemort, Facebook & StumbleUpon’s support of HBase), and some are supported directly by companies (e. [sent-37, score-0.264]

10 In making a decision, I’ll consider the following learnings: Any system that you pick will require 24-7 operational support. [sent-40, score-0.167]

11 Many of the NoSQL vendors view the “battle of NoSQL” to be akin to the RDBMS battle of the 80s, a winner-take-all battle. [sent-56, score-0.246]

12 A distributed system picks specific design elements in order to perform well at certain operations. [sent-59, score-0.183]

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16 The secondary index will return rowids in the primary store. [sent-74, score-0.275]

17 In reviewing Voldemort code recently, I was impressed by the clarity and quality of the code. [sent-76, score-0.239]

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19 The implementors understood the DNA of the system and did not add functionality to the system that is ill-suited to the DNA. [sent-80, score-0.27]

20 Hence, the system we end up building might be composed of several specialty component systems that can be independently tuned, in some ways similar to HBase. [sent-83, score-0.294]


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