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Search found 549 results on 22 pages for 'nosql'.

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• Simplest distributed persistent key/value store that supports primary key range queries

  - by StaxMan

  I am looking for a properly distributed (i.e. not just sharded) and persisted (not bounded by available memory on single node, or cluster of nodes) key/value ("nosql") store that does support range queries by primary key. So far closest such system is Cassandra, which does above. However, it adds support for other features that are not essential…

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• Looking for: nosql (redis/mongodb) based event logging for Django

  - by Parand

  I'm looking for a flexible event logging platform to store both pre-defined (username, ip address) and non-pre-defined (can be generated as needed by any piece of code) events for Django. I'm currently doing some of this with log files, but it ends up requiring various analysis scripts and ends up in a DB anyway, so I'm considering throwing it…

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• Searches (and general querying) with HBase and/or Cassandra (best practices?)

  - by alexeypro

  I have User model object with quite few fields (properties, if you wish) in it. Say "firstname", "lastname", "city" and "year-of-birth". Each user also gets "unique id". I want to be able to search by them. How do I do that properly? How to do that at all? My understanding (will work for pretty much any key-value storage -- first goes key,…

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• Big Data – Buzz Words: Importance of Relational Database in Big Data World – Day 9 of 21

  - by Pinal Dave

  In yesterday’s blog post we learned what is HDFS. In this article we will take a quick look at the importance of the Relational Database in Big Data world. A Big Question? Here are a few questions I often received since the beginning of the Big Data Series - Does the relational database have no space in the story of the Big Data? Does…

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• Google migre AdWords de MySQL vers F1, son nouveau SGBDR distribué, développé en interne qui combine le meilleur de NoSQL et SQL

  Google migre AdWords de MySQL vers F1 son nouveau SGBDR distribué développé en interne qui combine le meilleur de NoSQL et SQL Google a développé en catimini son propre gestionnaire de base de données relationnelle. La société a déplacé récemment plusieurs de ses services de publicité de MySQL vers F1, un nouveau SGDBR «…

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• Write-only collections in MongoDB

  - by rcoder

  I'm currently using MongoDB to record application logs, and while I'm quite happy with both the performance and with being able to dump arbitrary structured data into log records, I'm troubled by the mutability of log records once stored. In a traditional database, I would structure the grants for my log tables such that…

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• Cassandra inserts using Net::Cassandra::Easy in Perl

  - by knorv

  When using the Perl module Net::Cassandra::Easy to interface with Cassandra I use the following code to read colums col[123] from rows row[123] in column-family Standard1: my $cassandra = Net::Cassandra::Easy->new(keyspace => 'Keyspace1', server => 'localhost'); $cassandra->connect(); my $result =…

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• Cross-platform embedded database/key-value store for C#

  - by Arne Claassen

  I'm looking for a fast, embeddable key/value store with cursor semantics over key collections (or a simple embeddable DB) that I can use in .NET and mono. Need it to be open-source, would prefer an MIT or Apache style license over a GPL license. Not opposed to a library that needs bindings to be written, as…

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• Best DataMining Database

  - by Eric

  I am an ocasional Python programer who only have worked so far with MYSQL or SQLITE databases. I am the computer person for everything in a small compamy and I have been started a new project where I think it is about time to try new databases. Sales departament makes a CSV dump every week and I need to…

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• Complex Query on cassandra

  - by Sadiqur Rahman

  I have heard on cassandra database engine few days ago and searching for a good documentation on it. after studying on cassandra I got cassandra is more scalable than other data engine. I also read on Amazon SimpleDB but as SimpleDB has a limitation 10GB/table and Google Datastore is slower than Amazon…

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• A catalogue of Cassandra log messages: What is the correct interpretation?

  - by knorv

  The following is a complete catalogue of all log messages generated by Cassandra 0.6 when stress-testing a Cassandra installation over an extended period of time: AntiEntropyService: Sending AEService tree for (,) to: [] CassandraDaemon: Binding thrift service to localhost/N.N.N.N:N CassandraDaemon:…

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• Recommend a good db4o viewer

  - by mgroves

  I'm playing around with db4o, and I have the Object Manager viewer thingy for Visual Studio. It seems okay, but not exactly on par with tools like HeidiSQL/SQL Studio/etc., not to mention that it locks the db4o file--I can't use my db4o app and Object Manager at the same time. Maybe I'm using it…

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• Does Perl's Net::Cassandra module support UTF-8?

  - by knorv

  I've run into a really strange UTF-8 problem with Net::Cassandra::Easy (which is built upon Net::Cassandra): UTF-8 strings written to Cassandra are garbled upon retrieval. The following code shows the problem: use strict; use utf8; use warnings; use Net::Cassandra::Easy; binmode(STDOUT,…

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• MongoDB vs. Redis vs. Cassandra for a fast-write, temporary row storage solution

  - by Mark Bao

  Hi there, I'm building a system that tracks and verifies ad impressions and clicks. This means that there are a lot of insert commands (about 90/second average, peaking at 250) and some read operations, but the focus is on performance and making it blazing-fast. The system is currently…

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• SimpleDB as the main database, examples.

  - by Victor P

  Please, can you give examples of real-life implementations using SimpleDB as the main persistent storage?

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• How to implement Object Databases in Asp.net MVC

  - by amexn

  I started my project in Asp.net MVC(c#) & SQL Server 2005.I want to implement Object Databases in my project. While searched in google i found "MongoDb" & db4o I didn't have enough knowledge in Object Databases & which one best suited for SQL Server 2005. Please suggest a…

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• Pros/Cons of document based database vs relational database

  - by damian

  I've been trying to see if I can accomplish some requirements with a document based database, in this case CouchDB. Two generic requirements: CRUD of entities with some fields which have unique index on it ecommerce web app like eBay (better description here). And I'm begining…

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• Net::Cassandra::Easy equivalent of "SELECT * FROM ..."

  - by knorv

  When using Perl's Net::Cassandra::Easy the following code will retrieve columns col[1-3] from rows row[1-3]: $result = $cassandra->get(['row1', 'row2', 'row3'], family => 'Standard1', byname => ['col1', 'col2', 'col3'); The corresponding SQL would be: SELECT col1, col2,…

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• Difference between graph database: Neo4j & AllegroGraph

  - by user313456

  Hi All, What is the difference between this 2 graph DB: Neo4j and AllegroGraph? Which is better for JAVA Web programming? Thanks Erwin

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• Child objects in MongoDB

  - by Jeremy B.

  I have been following along with Rob Conery's Linq for MongoDB and have come across a question. In the example he shows how you can easily nest a child object. For my current experiment I have the following structure. class Content { ... Profile Profile { get; set; } } …

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• Cassandra/HBase or just MySQL: Potential problems doing the next thing

  - by alexeypro

  Say I have "user". It's the key. And I need to keep "user count". I am planning to have record with key "user" and value "0" to "9999+ ;-)" (as many as I'll have). What problems I will drive in if I use Cassandra, HBase or MySQL for that? Say, I have thousand of new updates to…

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• How do I insert a row with Perl's Net::Cassandra::Easy?

  - by knorv

  When using the Perl module Net::Cassandra::Easy to interface with Cassandra I use the following code to read colums col[123] from rows row[123] in column-family Standard1: my $cassandra = Net::Cassandra::Easy->new(keyspace => 'Keyspace1', server => 'localhost');…

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• Mongoid or MongoMapper?

  - by PanosJee

  I have tried MongoMapper and it is feature complete (offering almost all AR functionality) but i was not very happy with the performance when using large datasets. Has anyone compared with Mongoid? Any performance gains ?

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• Querying a Cassandra column family for rows that have not been updated in X days

  - by knorv

  I'm moving an existing MySQL based application over to Cassandra. So far finding the equivalent Cassandra data model has been quite easy, but I've stumbled on the following problem for which I'd appreciate some input: Consider a MySQL table holding millions of entities: …

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• Perform case-insensitive lookup on an Array in MongoDB?

  - by Hal

  So, I've decided to get my feet wet with MongoDB and love it so far. It seems very fast and flexible which is great. But, I'm still going through the initial learning curve and as such, I'm spending hours digging for info on the most basic things. I've search…

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