Ports Search

Apache HBase is an open-source, distributed, versioned, non-relational database modeled after Google's Bigtable: A Distributed Storage System for Structured Data by Chang et al. Just as Bigtable leverages the distributed data storage provided by the Google File System, Apache HBase provides Bigtable-like capabilities on top of Hadoop and HDFS. Features: -- Linear and modular scalability -- Strictly consistent reads and writes -- Automatic and configurable sharding of tables -- Automatic failover support between RegionServers -- Convenient base classes for backing Hadoop MapReduce jobs with Apache HBase tables -- Easy to use Java API for client access -- Block cache and Bloom Filters for real-time queries -- Query predicate push down via server side Filters -- Thrift gateway and a REST-ful Web service that supports XML, Protobuf and binary data encoding options -- Extensible jruby-based (JIRB) shell -- Support for exporting metrics via the Hadoop metrics subsystem to files or Ganglia, or via JMX

RRDman is a set of utilities that manipulate the RRDtool database files. Currently it consists of the following utilities: * rrd_hwreapply: Re-apply Holt-Winters prediction parameters to RRD data RRDman is hosted as a subproject of RRFW

A simple utility to merge existing RRD data from backups into new RRD files that have started gathering data already. Useful for getting historical data back while performing disaster recovery.

It is pretty easy to gather status information from all sorts of things, ranging from the temperature in your office to the number of octets which have passed through the FDDI interface of your router. But it is not so trivial to store this data in a efficient and systematic manner. This is where RRDtool kicks in. It lets you log and analyze the data you gather from all kinds of data-sources. The data analysis part of RRDtool is based on the ability to quickly generate graphical representations of the data values collected over a definable time period.

Evolution-data-server provides the various backend components for the Evolution integrated mail/PIM suite, including the Berkeley database backend and the libical calendar components.

This is a Ruby extension to GDBM library, which is actually a part of the Ruby distribution.

ObjectDBM (o_dbm) is an OODB-like DBM module for Ruby.

This is an extension library to use ODBC data sources from Ruby.

Ruby API for QDBM

RDBC stands for Ruby Database Connectivity. RDBC provides a unified API to access RDBMS such as PostgreSQL and Oracle. The composition of RDBC is like that of JDBC. Almost all the names of the classes and the methods are mimicked.