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Neil Stevenson

Neil Stevenson

Solutions Architect

Neil is a solution architect for Hazelcast®, the world's leading open source in-memory data grid. In more than 25 years of work in IT, Neil has designed, developed and debugged a number of software systems for companies large and small.

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Fraud Detection near-cache example

Neil Stevenson
by Neil Stevenson

An example demonstrating how a near-cache configuration option can be added to an existing application to improve performance. Performance increases, no coding is required. But it’s not a universally applicable solution, there are downsides to be aware of. What is a “near-cache“? Hazelcast provides a number of distributed storage containers, for storing data in the […]

Tricolor: Multiple classloaders, multiple Hazelcasts, multiple loggers and multiple colours — all in the one JVM

Neil Stevenson
by Neil Stevenson

Why? The normal deployment is for a JVM to contain a single Hazelcast instance, a client or a server. This means that the instance can utilise all the resources available to that JVM. In automated tests, it can frequently be useful to run multiple Hazelcast instances in the one JVM so that it is easy […]

Step Away From The Database

Neil Stevenson
by Neil Stevenson

A step-by-step example of how to introduce Hazelcast into an existing database backed application. The example here takes a Spring JPA example and augments this with Spring Data Hazelcast for added speed and resilience, without discarding what is already there. For a developer these are baby steps, but for an architect it’s giant leaps. Hola […]

Spring Boot: Hazelcast for Session Replication

Neil Stevenson
by Neil Stevenson

In an earlier blog post, Caching Made Bootiful: The Hazelcast Way, Hazelcast’s Viktor Gamov demonstrated the ease of doing caching with Hazelcast in Spring. In this post, we’ll continue the theme to show how trivial session clustering is to implement from a coding perspective but also how this can radically change the application architecture for […]

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