cluster (796)


database - Anyone using CouchDB?

database - Anyone using CouchDB?

I've followed the CouchDB project with interest over the last couple of years, and see it is now an Apache Incubator project. Prior to that, the CouchDB web site was full of do not use for production…


Clustering Algorithm for Mapping Application

I'm looking into clustering points on a map(lat/longs). Are there any recommendations as to a suitable algorithm that is fast and scalable? @Gilligan: Yes-I have a series of lat/lngs, and a map…


How to simulate memory allocation errors

My C application uses 3rd libraries, which do their own memory management. In order to be robust, my application has code to deal with failures of library functions due to lack of free memory. I would…


CouchDB backups and cloning the database

We're looking at CouchdDB for a CMS-ish application. What are some common patterns, best practices and workflow advice surrounding backing up our production database? I'm particularly interested in t…


Scaling solutions for MySQL(Replication, Clustering)

At the startup I'm working at we are now considering scaling solutions for our database. Things get somewhat confusing(for me at least) with MySQL, which has the MySQL cluster, replication and MySQL…


Change language of system and error messages in PostgreSQL

Is it possible to change the language of system messages from PostgreSQL? In MSSQL for instance this is possible with the SQL statement SET LANGUAGE.…


“Communication with the underlying transaction manager has failed” error message

A client of our has recently upgraded a ASP.NET 1.1 web application to ASP.NET that uses COM+ transaction processing and received the following exception while trying to process a transaction: Excep…


Best distributed filesystem for commodity linux storage farm

I have a lot of spare intel linux servers laying around(hundreds) and want to use them for a distributed file system in a web hosting and file sharing environment. This isn't for a HPC application,…



html onresizeend event, or equivalent way to detect end of resize

I'm trying to detect when the onresize event ends in a browser. If I use the "onresize" event, in Firefox it seems to be fired only once, after the resize event ends, which is exactly what I want. Bu…


Algorithm for detecting “clusters” of dots

I have a 2D area with "dots" distributed on this area. I now am trying to detect "clusters" of dots, that is, areas with a certain high density of dots. Any thoughts on(or links to articles with thou…




example tutorial node how redis python multiple java setup not