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SPKR is a highly scalable demo server application written in Scala designed to illustrate how the Wajam frameworks can be used to build distributed applications. The four main frameworks are: NRV, MRY, SPNL, SCN. The following diagrams illustrates the scope and context of the SPKR application.

Note that SPKR includes 2 components: a Scala server built on the four frameworks, and a small web client used to query the server. Aside from the four frameworks, SPKR also uses Apache ZooKeeper to maintain cluster-wide synchronization, and MySQL as an underlying store for MRY.

Documentation

• Conceptual Introduction
• Setup Instructions
• SPKR Overview
• Scaling SPKR

Other references

• Blog post
• NRV Documentation