This project was part of a university project. It tests the NoSQL-Databases Redis (Cluster), Cassandra and Couchbase for the Use-Case "Distributed Key-Value Store".
For the evaluation the requirements were bound to answer-times and reliability.
While performing the tests there were 11 servers set up. 6 of the servers are database-servers which are distributed accross different datacenters. The WAN-Simulation is done with the Linux Kernel-module netem. (10ms latency and 0.1% packet-loss)
There are also 4 servers for generating load against the database instances. The last server is used for management and configuration tasks.
The Application does connect to one database. Every application instance simulated 15000 sessions and generates insterts, updates, reads and deletes for the key-value data.
For every request the metrics are saved and pushed to prometheus via a pushgateway. Grafana is used to generate the answer-time charts at the bottom of the page.
Please visit src for some more information about the Test Software
Please visit conf for some more information about the configuration of the hosts. It includes an Ansible-Playbook with all the needed configration.
The following anser-time graphs show the answer-times for the different database products.
For the german documentation and presentation, see the PDF-Files in this folder.