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Creating a noSql database, what is the best source code to look at?

2015-07-07 13:23 621 查看
I have always wanted a nosql database that was purpose built for storing large volumes of nested/threaded comments. Implementation would probably be done in java because that is what I am best at. I really like how ElasticSearch is dead simple to set up a cluster
and throw data into it, I want my product to share those same qualities. Here are the features I have in mind:

1) auto/manual sharding across clusters

2) auto/manual indexing across clusters

3) full text search (probably via lucene or elasticSearch)

4) REST/JSON API

5) retrieve any comment by ID

6) comments can be retrieved with or without child nodes

7) comment trees can be retrieved with a specified depth

8) comment tree can be retrieved can be filtered by time or rank

9) entire comment trees can be re-parented.

What I'm looking for are exceptional pieces of code or specific algorithms that I can study before digging into this project. Can anyone suggest a few places to get started?

java rest nosql comments sharding
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asked Aug 8 '12 at 3:24





bostonBob

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Much of this will be a feature of the app you build rather than the database you use. The rest (possibly excluding full-text
search), any existing NoSQL database should be able to handle. Why exactly can't you use an already existing DB? – cHao Aug
8 '12 at 3:30
Do you want to write your own, or do you want to use one that you like and that is written in Java? – EdmonAug
8 '12 at 3:30
About 80% of the reason for wanting to write my own is for fun, the other 20% is because I have never really been fully
satisfied with the traditional solutions for storing nested comments. I think it would be cool to be able to fire up a cluster to store/search reddit scale volumes of comments. – bostonBob Aug
8 '12 at 3:52
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Since your tag in a question indicates Java, I suggest looking into OrientDB.

Here is a source code:

http://code.google.com/p/orient/source/browse/

and the architecture:

http://code.google.com/p/orient/wiki/Presentations

for the big boy stuff (clustering, hyper scaling take a look at HBase and Accumulo):

http://hbase.apache.org/source-repository.html

http://accumulo.apache.org/source.html

Hope this helps.

Edmon

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