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Async systems with sync clients

As the Reactive Manifesto says Reactive systems are: Responsive Resilient Elastic Message Driven The last principle often goes together with non-blocking async protocols. This style of communication "allows recipients to only consume resources while staying active, leading to less system overhead". This fits perfectly with...


Sorted pagination in Cassandra

Cassandra is a fantastic database for different use cases. There are different situations when you need to twist Cassandra a little and studying one of those could be a helpful exercise to better understand what is Cassandra about. Databases are complex beasts, approaching them with...


Coupling in distributed systems

Coupling and cohesion are key quality indicators. We strive for systems highly cohesive and loosely coupled, but high doesn't mean pure. The same goes with functional programming, we aim for isolating and reducing side effects, but we need them unless we want a useless system....