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How to estimate memory consumption?

This story goes back at least a decade, when I was first approached by a PHB with a question “How big servers are we going to need to buy for our production deployment”. The new ...
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Java 8 Friday Goodies: Lambdas and XML

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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Java 8 Friday Goodies: java.io finally rocks!

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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GC impact on throughput and latency

One type of the problems each and every Java application out there has to wrestle with is related to garbage collection. When the garbage collector works, it represents a wonderful ...
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Learning about bitmaps

A few weeks ago Alistair and I were working on the code used to model the labels that a node has attached to it in a Neo4j database. The way this works is that chunks of 32 nodes ids ...
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Oracle ships Java 8

Oracle has decided to ship upgrade to JDK (Java Development Kit) 8 on March 18, even though the new release may come with a few bugs, as introduced by Full speed ahead: Oracle to ship ...
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Post-hoc tracing using a debugger

Once nice little features of most debuggers that I have been exercising recently is the ability to log information on a breakpoint. This can be a really useful was to understand code ...
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Java vs. Native Agents – The Powerful Things They Do

What you should know before installing an agent, and how it affects your code When building a scalable server-side application we spend considerable amount of time thinking about how ...
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Mirror Mirror – Using Reflection To Look Inside The JVM at Run-time

Developers: Takipi tells you when new code breaks in production –  Learn more We’re all used to employing reflection in our everyday work, either directly, or through frameworks ...
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Want to get faster with AtomicLong? Make it wait.

I often hear that Java atomic types (java.util.concurrent.atomic) are super-fast and play nicely with highly concurrent code. Most of the time, atomics do their job in a robust and ...
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