Questions tagged [NoSQL] (268)

6
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Advise database (pure Java, Schema, less embedded, in memory)

Please advise: pure Java, Schema, less embedded, in memory database. To use as a cache of object properties. Well or other variants how to organize the cache :) Thank you!
vesta.Mann28 asked October 14th 19 at 10:29
1
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How to cache DataMapper model?

DataMapper is not an ORM marginal in practice was concerned with reducing the burden on database. How to implement caching models? Marsalis entire object and Menkes? Rip the final Hash with the data and Radishes? Or from a model to JSON and files on tmpfs? * Solutions ala cache_money (ActiveRecord) not found.
Adeline77 asked October 10th 19 at 12:29
2
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MongoDB 2 random records?

Good evening! The question arose, as in MongoDB to select 2 random records from many? In SQL I would do this:SELECT * FROM sometable ORDER BY RAND() LIMIT 2
Nova71 asked October 10th 19 at 11:34
1
answer

Replication Redis

Doing another startup which used the radish, now closely was the question of building a failover database cluster. As you know, radish supports only master-slave replication. It is necessary that at falling of the master some of Slavov would take a wizard function. For this purpose I found the following solution: github.co...
Coralie27 asked October 10th 19 at 11:17
2
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How to retrieve N random non-repeating elements from a SET in Redis?

There is a SET c 1000 id, you have to choose 3 random and non-repeating. The decision "in a forehead" — 3 times to make SRANDMEMBER, but there is no guarantee that there will be no repeats. It is possible to control retries at the client level and spin cycle SRANDMEMBER as long as the resulting set is not unique, but it is ...
audrey.Mayer53 asked October 10th 19 at 11:03
1
answer

Opensource database ScalaxyDB

Hello! Is there a C++ developer who would like to join an opensource project non-relational self-balancing p2p database ScalaxyDB? Sources: github.com/miolini/scalaxydb Google Group: groups.google.com/group/scalaxydb
Miguel.Cummera asked October 10th 19 at 10:21
4
answers

NoSQL + Python

Where to read its NoSQL database? Interested in the theory, pros and cons, examples of use and prospects. I decided now to diversify your knowledge and read about the database and for some reason (probably a fad and "cool it") decided to study NoSQL. Also wondering what are the tools for working with databases of this type...
lance_Pri asked October 10th 19 at 09:47
1
answer

PHP + DB4

One project uses high-load PHP module DB4 to store all data. PHP version 5.2.3. There are persistent problems of the "failure" of the files in the database, when it becomes impossible to record something, you have to recreate the database file and overwrite it with data. There are also other problems — for example, in the m...
colt.Erdm asked October 10th 19 at 08:53
5
answers

Advise the literature that "move the brain" from Sql to Nosql thinking

The other day I tried to paracobitis with mongo DB and came to the conclusion that I can not imagine how would I keep the data moving them from mysql to nosql.I found the article partly reflect the functionality of this solution. But didn't answer the question "how to organize at the project level?". Advise please books\art...
Johnathan.Wal asked October 10th 19 at 07:35
1
answer

Are there collections in membase?

Good evening! Please tell me whether membase something like collections (like in MongoDB). Want to make different collections such as for news and comments, but I don't know how come the idea to use prefixes. MongoDB fits perfectly, but the problem I want to solve at membase purely for academic purposes.
Nova71 asked October 10th 19 at 06:55