As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 11 years ago.
Is there a paper/blog-post on when to use Cassandra or Membase or Hadoop or plain old relational databases ? Is there a paper discussing the strengths/weaknesses of each, and on what scenarios either of these technologies should be chosen ?
I am thinking of writing a new webservice which will have about a million hits per day and data spanning about a few terabytes.
EDIT The NoSQL Ecosystem by Adam Marcus (from the book The Architecture of open source applications): http://www.aosabook.org/en/nosql.html
general thoughts and comparison http://www.thoughtworks.com/articles/nosql-comparison
technical comparison http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis
a Master's Thesis - Analysis and Classification of NoSQL Databases http://scholar.googleusercontent.com/scholar?q=cache:rQlbiz6bojAJ:scholar.google.com/+comparison+of+nosql&hl=en&as_sdt=0,5&as_vis=1
Related
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 9 years ago.
I want to use No-Sql in my application I think RavenDb and MongoDb are good but which one is more integrated with EF?
and is there any documentation for using theme?
Entity framework is built to support relational databases. It has no support for any no-sql or document databases. And when you think about it, it actually doesn't make too much sense, what is the point of using an object relational mapper and producing a relational mapping of a non-relational database?
There are however libraries which support both of these frameworks available for .Net available via nuget. Im sure these would be much more appropriate for your application
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 9 years ago.
Are there any existing schema template for general web analytics workload, e.g. similar to Google Analytcis, it probably have at least the following tables
users
sites
requests
Since I don't want to re-invent the wheel, I am looking if any existing well defined schema or good relations modeling is suitable for my need.
Any idea?
Remark: I am running on AWS RedShift, but I think most column oriented database should have similar schema.
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 10 years ago.
MongoDB is not a relational database nor does the product follow a relational architecture. But for someone coming from the world of RDBMS, I would like to know to what extent does MongoDB support ACID (Atomocity, Consistency, Isolation, Durability). Or should we not evaluate MongoDB from an ACID perspective?
How I love documentation: http://docs.mongodb.org/manual/faq/fundamentals/#does-mongodb-support-transactions and this very site: What does MongoDB not being ACID compliant really mean?
There are ways to support transactions in MongoDB and the go driver even has transactional queries inbuilt into it now.
Here is a brief example of a two phase commit: http://cookbook.mongodb.org/patterns/perform-two-phase-commits/ more complex queries would require more work.
Basically the implications of MongoDBs ACID compliance can be explained via the doc pages and that question mostly.
It is probably one of the most talked about subjects in MongoDB and a quick Google search will give you more information than we could in an answer here.
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 11 years ago.
We have requirements that force us to have two layers of databases. A good caching solution backed by large distributed database. We are thinking to use redis for fast read and write. We are not yet settled for the database at backend, however we would prefer it to have following properties:
consistent over time.
robust (no data loss).
reasonably fast read.
distributed.
We are exploring cassandra and Mongodb as our options. Hbase might be a option too. Kindly let us know your views/ current state of work. We are expecting some comparative analysis which could be like in http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis , but should be more upto date and can give us better insight. An example usecase could be like when someone post a comment in facebook. The comment is then visible to all its friends in real time.
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 11 years ago.
I am working on a project and as I want it to be hassle free so I am considering using Amazon SimpleDB for the sake of simplicity. At least I can cross out DB administration.
But why there is so little info about SimpleDB on the net? As if nobody cares about it and I feel like I might be on the wrong track. Is it so unpopular? The other major NoSQL databases have a lot more coverage. What could be the reason? Is it because it is hosted? Does it lack major important features which I don't notice? Is it horrible performance-wise? Is it not durable? Why people are not very interested? Are there better alternatives for hosted NoSQL?