Articles


Written by Per Minborg

Filling up a HashMap with millions of objects will quickly lead to problems such as inefficient memory usage, low performance and garbage collection problems. Learn how to use off-heap CronicleMap
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Written by Per Minborg

Reading and writing binary data with Java can sometimes be a hassle. Read this article and learn how to leverage Chronicle Bytes, thereby making these tasks both faster and easier.I
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Written by Per Minborg

Java: How to Slash Down Building Times Using the CloudBuilding larger Java projects on a laptop with Maven can be frustrating and slow. Learn how you could slash down building
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Written by Per Minborg

Java: How to Become More Productive with Hazelcast in Less Than 5 MinutesWhat if you want to use a Hazelcast In-Memory Data Grid (IMDG) to speed up your database applications,
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Written by Per Minborg

Java Stream: Part 2, Is a Count Always a Count?In my previous article on the subject, we learned that JDK 8’s stream()::count takes longer time to execute the more elements
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Written by Per Minborg

Java Stream: Is a Count Always a Count?It might appear obvious that counting the elements in a Stream takes longer time the more elements there are in the Stream. But
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Written by Per Minborg

Java 12: Mapping with Switch ExpressionsIn this article, we will be looking at the new Java 12 feature “Switch Expressions” and how it can be used in conjunction with the
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Written by Per Minborg

Who’s Been Naughty, Who’s Been Nice? Santa Gives You Java 11 Advice!Ever wondered how Santa can deliver holiday gifts to all kids around the world? There are 2 billionkids, each
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Written by Per Minborg

Java: Aggregate Data Off-HeapExplore how to create off-heap aggregations with a minimum of garbage collect impact andmaximum memory utilization.Creating large aggregations using Java Map, List and Object normally creates a
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Written by Per Minborg

Java 11: JOIN Tables, Get Java StreamsEver wondered how you could turn joined database tables into a Java Stream? Read this short article and find out how it is done
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Written by Per Minborg

Shortest Code and Lowest LatencyWho can write the shortest Java code with the lowest latency, and what tools are used?At Oracle Code One two weeks ago, I promoted a code challenge
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Written by Per Minborg

Java streams with just one element sometimes create unnecessary overhead in your applications. Learn how to use SingletonStream objects and gain over tenfold performance for some of these kinds of
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