About Adam Warski

Adam is one of the co-founders of SoftwareMill, a company specialising in delivering customised software solutions. He is also involved in open-source projects, as a founder, lead developer or contributor to: Hibernate Envers, a Hibernate core module, which provides entity versioning/auditing capabilities; ElasticMQ, an SQS-compatible messaging server written in Scala; Veripacks, a tool to specify and verify inter-package dependencies, and others.

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Let’s turn packages into a module system!

Many projects are divided into modules/subprojects using the build system (Maven, Gradle, SBT …); and writing modular code is generally a Good Thing. Dividing the code into build ...
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Trying to understand CAP

The CAP theorem, stated by Brewer and proved by Gilbert and Lynch specifies a property of distributed systems. It states that such a system cannot guarantee at the same time Consistency, ...
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Scala: Missing OO and FP bridge

Scala blends functional and object-oriented programming in many nice ways. You can use both FP an OO-like constructs whichever fits the current problem better. But there’s always ...
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Generational caching and Envers

Konrad recently shared on our company’s technical room an interesting article on how caching is done is a big polish social network, nk.pl. One of the central concepts in the algorithm ...
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ElasticMQ message replication with JGroups

ElasticMQ is a messaging server, with a Scala, Java, and an Amazon SQS-compatible interface. It supports guaranteed messaging by replicating the messages across a cluster of servers, ...
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Frameworks vs Libraries as Inheritance vs Composition?

For quite some time inheritance was the dominant model of structuring programs in OO languages like Java. Very often it was used as a mechanism for reusing code – “common” functions ...
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DI in Scala: Cake Pattern pros & cons

I’ve been looking at alternatives for java-style DI and DI containers which would use pure Scala; a promising candidate is the Cake Pattern (see my earlier blog post for information ...
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Java Modularity Approaches – Modules, modules, modules

I think everybody will agree that writing modular applications and modularity in general is a good thing. But how does support for modularity look like, both from the Java and Scala ...
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