Apache Geode

Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing

---

Driver details org.apache.geode:geode-core:1.15.1

Overview

Joule uses Geode to as as a high performance in-memory key-value store to support advanced stream processing functions at low latency. This architecture pattern has been production deployed and leveraged within large enterprise solutions over 15 years.

Storage regions can be primed on startup using either a custom query or a getAll function otherwise data is fetched on cache misses. Furthermore for cached data elements, data updates are immediately propagated from the connected distributed cluster to the Joule process thereby enabling up-to-date reference data.

Architecture

[Add diagram and description]

Example configuration

geode stores:
    name: us markets
    connection:
        locator address: 192.168.86.39
        locator port: 41111
    stores:
      nasdaqIndex:
        region: nasdaq-companies
        keyClass : java.lang.String
        gii: true
      holidays:
        region: us-holidays
        keyClass : java.lang.Integer

Core attributes

Need to refactor by adding connection spec

Attribute	Description	Data Type	Required
name	Logical name of reference data set for given target connection	String
locator address	Locator process IP address	String Default: localhost
locator port	The port the cluster locator listens for cluster and client connections	Integer Default: 41111
stores	Map of logical names to region configurations. See Region attributes	List of logical storage name to Geode storage region