Main Memory Relational Database Management System
- Fastest query execution
- Post-relational features
- Tight integration with C++
- Automatic scheme evaluation
- Efficient log-less transactions
- Zero time recovery
pgModeler - PostgreSQL Database Modeler - is an open source data modeling tool
designed for PostgreSQL. No more DDL commands written by hand let pgModeler
do the job for you! This software reunites the concepts of entity-relationship
diagrams and the features that PostgreSQL implements as extensions of
SQL standards.
Procedural and simple OO wrapper for rrdtool - data logging and graphing system
for time series data.
Redis is an open source, advanced key-value store. It is often referred
to as a data structure server since keys can contain strings, hashes,
lists, sets and sorted sets.
You can run atomic operations on these types, like appending to a string;
incrementing the value in a hash; pushing to a list; computing set
intersection, union and difference; or getting the member with highest
ranking in a sorted set.
In order to achieve its outstanding performance, Redis works with an
in-memory dataset. Depending on your use case, you can persist it either
by dumping the dataset to disk every once in a while, or by appending each
command to a log.
Redis also supports trivial-to-setup master-slave replication, with very
fast non-blocking first synchronization, auto-reconnection on net split
and so forth.