About Ashkrit Sharma

Pragmatic software developer who loves practice that makes software development fun and likes to develop high performance & low latency system.

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Factory Without IF-ELSE

Object Oriented Language has very powerful feature of Polymorphism, it is used to remove if/else or switch case in code. Code without condition is easy to read. There are some places ...
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Off Heap concurrent counter

Concurrent counter are part of almost every system, it is used to collect data, thread synchronization etc. Java has good support of heap based counter. There could be use case when ...
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Scalable Counters For Multi Core

Counters are required everywhere , for e.g. to find key KPI of application, load on application, total number of request served, some KPI for finding throughput of application & ...
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Which memory is faster Heap or ByteBuffer or Direct ?

Java is becoming new C/C++ , it is extensively used in developing High Performance System. Good for millions of Java developer like me! In this blog i will share my experiment with ...
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ArrayList Using Memory Mapped File

Introduction In-Memory computing is picking up due to affordable hardware, most of the data is kept in RAM to meet latency and throughput goal, but keeping data in RAM create Garbage ...
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Lock Less Java Object Pool

It has been a while since I wrote anything, I have been busy with my new job that involves doing some interesting work on performance tuning. One of the challenges is to reduce object ...
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Experiment with ConcurrentHashmap

I am investigating a memory issue in one of my recent projects where data is kept in memory for fast access, but the memory footprint of application is very high. This application was heavily using ...
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Latency number that you should know

Latency number that you should know Many of you work on low latency & high throughput systems. The key to developing such systems is understanding latency, be it of CPU cache, RAM, ...
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Power of Java MemoryMapped File

Power of Java MemoryMapped File In JDK 1.4 an interesting feature of Memory mapped file was added to Java, which allows to map any file to OS memory for efficient reading. A memory ...
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