Map<D,B>Map<D,B>MapDB provides Java Maps, Sets, Lists, Queues and other collections backed by off-heap or on-disk storage. It is a hybrid between java collection framework and embedded database engine. It is free and open-source under Apache license.
Direct Memory Alignment in Java
Summary: First in a quick(hopefully) series of posts on memory alignment in Java. This post introduces memory alignment, shows how to get memory aligned blocks, and offers an experiment and some results concerning unaligned memory performance. Since the first days of Java, one of the things you normally didn't need to worry about was memory. This was a good thing for all involved who cared little
Microsoft PowerPoint - ByteBuffer_Presentation.ppt
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Native C/C++ Like Performance For Java Object Serialisation
Do you ever wish you could turn a Java object into a stream of bytes as fast as it can be done in a native language like C++? If you use standard Java Serialization you could be disappointed with the performance. Java Serialization was designed for a very different purpose than serialising objects as quickly and compactly as possible. Why do we need fast and compact serialisation? Many of our s
Byte Buffers and Non-Heap Memory
Byte Buffers and Non-Heap Memory Originally published: 2010-04-04 Last updated: 2017-01-22 Most Java programs spend their time working with objects on the JVM heap, using getter and setter methods to retrieve or change the data in those objects. A few programs, however, need to do something different. Perhaps they're exchanging data with a program written in C. Or they need to manage large chunks
Compact Off-Heap Structures/Tuples In Java
In my last post I detailed the implications of the access patterns your code takes to main memory. Since then I've had a lot of questions about what can be done in Java to enable more predictable memory layout. There are patterns that can be applied using array backed structures which I will discuss in another post. This post will explore how to simulate a feature sorely missing in Java - arra
Cloudera Blog
The ongoing progress in Artificial Intelligence is constantly expanding the realms of possibility, revolutionizing industries and societies on a global scale. The release of LLMs surged by 136% in 2023 compared to 2022, and this upward trend is projected to continue in 2024. Today, 44% of organizations are experimenting with generative AI, with 10% having […] Read blog post
Direct memory jugl-2012.03.08
Apache Direct Memory is an open source implementation of off-heap caching that uses ByteBuffer.allocateDirect to store objects in off-heap memory without degrading JVM performance. It provides a multi-layered caching solution and can be used to build a standalone cache server similar to Memcached. Current use cases include integrating with Ehcache for multi-level caching and implementing an off-he
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GitHub - alexkasko/unsafe-tools: Tools to work with off-heap memory using sun.misc.Unsafe
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